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| RP108J s eries low input voltage 3a ldo regulator no.ea - 203 - 15081 7 1 outline the r p108j is a cmos - based voltage regulator ic featuring 3a output with low on - resistance . the RP108J consists of a voltage reference unit, an error amplifier, resistor - net for voltage setting, a fold - back protection circuit, and a thermal shutdown circuit. the RP108J features both low supply current and high output current, and the dropout voltage is muc h smaller than bi - polar's. the minimum input voltage is as low as 1.6v and the output voltage can be set from 0.8v , therefore it can be c onnected with the dc/dc convert e r as the latter power supply for high density lsi that is op erated by low output voltag e. the output voltage of RP108J081x is externally adjustable by using external divide resistors. the ce pin of the RP108J can switch the regulator to standby mode. in addition to a fold - back protection circuit, which is already built in the conventional r egulators, the RP108J contain s a thermal shutdown circuit, a constant slope circuit as a soft - start function and a reverse current protection circuit. ceramic c apacitors can be used. features ? output current ................................ ............................. min. 3 a ? supply current ................................ ............................. typ. 350 a ? standby current ................................ ........................... typ. 2 a ? input voltage range ................................ .................... 1.6v to 5.25v ? output voltage range ................................ .................. fixed output voltage type: 0.8v to 4.2v (0.1v steps) * r efer to mark information s f or other voltages . adjustable output voltage type: 0.8v to 4.2v ? output voltage accuracy ................................ .............. 1 .0% ( 15mv accuracy, when v set 1.5v) ? output voltage temperature - drift coefficient ........... typ. 100ppm/ c ? ripple rejection ................................ ........................... typ. 65 db ( f = 1khz , v set = 2.8 v) ? dropout voltage ................................ ........................... typ. 0.51v (v set = 2. 8 v) ? line regulation ................................ ............................ typ. 0. 1 %/v ? package ................................ ................................ ....... to - 252 - 5 - p2 ? built - in fold - back protection circuit ............................. typ. 220ma ? built - in thermal shut down circuit ................................ stops at 165 c ? built - in constant slope circuit ? built - in reverse current protection circuit ? ceramic capacitors are recommended to be used with this ic 10 f or more applications ? power source for battery - powered equipments . ? power source for portable communication equipments such as cameras and vcrs . ? power source for electrical home appliances.
RP108J no.ea - 203 - 150 81 7 2 block diagrams RP108Jxx1b /e RP108Jxx1d /f v dd gnd v out ce vref current limi t thermal s hutdown v fb reverse detecter v dd gnd v out ce vref current limi t thermal shutdown v fb reverse detecter selection guide the output voltage, auto discharge function , and the soft - start time for the ics can be selected at the user?s request. product name package quantity per reel pb free halogen free RP108Jxx1 ? (y) - t1 - fe to- 252 - 5 - p2 3,000 pcs yes yes xx: the set output voltage (v set ) can be designated in the range of 0.8v(08) to 4.2v(42) in 0.1v steps. y: if the output voltage includes the 3rd digit, indicate the digit of 0.01v. (1.25v, 1.85v, 2.85v) ex. if the output voltage is 1.25v, RP108J121? 5 - t1 - fe. if the output voltage is 1.85v, RP108J181 ? 5 - t1 - fe. if the output voltage is 2.85v, RP108J281 ? 5 - t1 - fe. ? : designation of auto - discharge function at off state and the soft - start time (b) no a uto - discharge function , soft start time typ. 180 s (d) auto - discharge function , soft start time typ. 180 s ( e ) no a uto - discharge function , soft start time typ. 570 s ( f ) auto - discharge function , soft start time typ. 570 s . auto - discharge function quickly lowers the output voltage to 0v, when the chip enable signal is switched from the active mode to the standby mode, by releasing the electrical charge accumulated in the external capacitor. refer to constant slope circuit for detailed information on t he difference of soft - start time and its effect . RP108J no.ea - 203 - 150 81 7 3 pin description s to - 252 - 5 - p2 1 2 3 4 5 ? to- 252 - 5 - p2 pin no . symbo l description 1 ce chip enable pin ( "h" active) 2 v dd input pin 3 gnd ground pin 4 v out output pin 5 v fb feedback pin * 1 the tab on the bottom of the package enhances thermal performance and is electrically connected to gnd (substrate level). it is recommended that the tab be connected to the ground plane on the board, or otherwise be left floating. the v out pin should be connected to the v fb pin when using rp1 08j as an internal fixed output voltage type . i n case of using RP108J as an external adjustable type , please refer to "adjustable output voltage type settings" . RP108J no.ea - 203 - 150 81 7 4 absolute maximum ratings symbol item rating unit v in input voltage 6.0 v v ce input voltage (ce input pin) ? 0.3 to 6. 0 v v fb input voltage (v fb pin) ? 0.3 to 6. 0 v v out output voltage ? 0.3 to v in + 0.3 v p d power dissipation (to - 252 - 5 - p2)* 1 high wattage land pattern 3800 mv standard land pattern 1900 t a operating temperature ? 40 to 85 q c tstg storage temperature 55 to 125 q c * 1 for power dissipation, please refer to package information . absolute maximum ratings electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the permanent damages and may degrade the life time and safety for both device and system using the device in the field. the functional operation at or over these absolute maximum rating s are not assured. RP108J no.ea - 203 - 150 81 7 5 electrical characteristics v in = v set +1.0 v , i out = 1ma, c in = c out = 10 f, unless otherwise noted. the specifications surrounded by are guaranteed by d esign e ngineering at - 40 c ta 85 c . RP108Jxx1b/d /e/f ( ta = 25 c) symbol item conditions m in . t yp . m ax. unit v out output voltage ta = 25o c v set > 1.5v 0.99 1.01 v v set 1.5v - 15 15 mv - 40oc ta 85oc v set > 1.5v 0.97 1.02 v v set 1.5v - 45 30 mv i lim output current limit 3.0 a ? v out / ? i out load regulation 1ma i out 300ma - 15 2.0 20 mv 1ma i out 3000ma - 70 3.0 50 v dif dropout voltage please refer to dropout voltage on the next page. i ss supply current i out = 0ma 350 500 a istandby standby current v ce = 0v 2.0 5.0 a ? ? + 0.5v v in 5.25v, i out =1ma (when v set ? 1 1.6 5.25 v rr ripple rejection f = 1khz, ripple 0.2vp - p i out = 100ma v set 2.8v 65 db v set > 2.8v 55 db ? ? c ta 85oc 100 ppm / o c i sc short current limit v out = 0v 220 ma i pd ce pull - down current 0.3 0.6 a v ceh ce input voltage "h" 1.0 v v cel ce input voltage "l" 0.4 v en output noise bw = 10hz to 100khz 70 vrms t tsd thermal shutdown temperature junction temperature 165 oc t tsr thermal shutdown released temperature junction temperature 95 oc r low auto - discharge nch tr. on resistance (d / f version) v in = 4.0v, v ce = 0v 30 i rev reverse current limit v ou t > 0.5v, 0v v in 5.25v 10 a all test items listed under electrical characteristics are done under the pulse load condition (tj ta = 25 oc ) except ripple rejection, output voltage temperature coefficient , output noise and thermal shutdown. ? 1 the maximum input v oltage listed under electrical characteristics is 5.25v. if for any reason the input voltage exceeds 5.25v, it has to be no more than 5.5v with 500 cumulative operating hours. RP108J no.ea - 203 - 150 81 7 6 the specifications surrounded by are guaranteed by d esign e ngineering at - 40 c ta 85 c. dropout voltage by output voltage (ta = 25 c) output voltage v set (v) dropout voltage v dif ( v ) condition typ. max. 0.8 v set < 0.9 i out = 3000ma 0.910 1.110 0.9 v set < 1.0 0.865 1.000 1.0 v set < 1.1 0.810 0.950 1. 1 v set < 1. 2 0.755 0.895 1. 2 v set < 1.5 0.720 0.840 1.5 v set < 2. 5 0.630 0.760 2.5 v set < 3.3 0.510 0.600 3.3 v set 4.2 0.480 0.560 recommended operating conditions (electrical characteristics) all of electronic equipment should be designed that the mounted semiconductor devices operate within the recommended operating conditions. the semiconductor devices cannot operate normally ove r the recommended operating conditions, even if when they are used over such conditions by momentary electronic noise or surge. and the semiconductor devices may receive serious damage when they continue to operate over the recommended operating conditions . RP108J no.ea - 203 - 150 81 7 7 typical applications v out c 1 r p108j xx1x v dd v out gnd c 2 ce v fb t ypical a pplication v out c 1 r p108j 081x v dd v out gnd c 2 ce v fb r2 r1 typical application for adjustable output voltage type e x ternal components symbol description s c1, c2 10 RP108J no.ea - 203 - 150 81 7 8 t echnical n otes when using the RP108J as an internally fixed output voltage type, please connect the v out pin to the v fb pin. however, when using it as the adjustable output voltage type, the output voltage of the externally adjustable output voltag e type should be set to 4.2v or less. also, total resistors value of r1 and r2 should be 20k ? or less. phase compensation in the ic, phase compensation is made for securing stable operation even if the load current is varied. for this purpose, use a 10 f or more capacitor c2. in case of using a tantalum capacitor and its esr is large, the output may be unstable. therefore, select c2 carefully considering its frequency characteristics. the recommended temperature characteristics for c1 and c2 capacitors are the followings. ? b characteristics: temperature range from ? 25 c to 85 c, capacitance change of 10% ? x5r characteristics: temperature range from ? 55 c to 85 c, capacitance change of 15% ? x7r characteristics: temperature range from ? 55 c to 125 c, capacitance change of 15% the recommended capacitor ? s tolerable voltage is twice as large as the voltage of use (c1: input voltage, c2: output voltage). the upper limit of the capacitance value for c2 is 100 f. however, the increase of c2 leads to the increase of inrush current. refer to constant slope circuit for detailed information. pcb layout make v dd and gnd lines sufficient. if their impedance is high, noise pickup or unstable operation may result. connect a capacitor c1 with a capacitance value as much as 10 f or more between v dd and gnd pin, and as close as possible to the pins. set external components , especially the output capacitor c2, as close as possible to the ics and make wiring as short as possibl e. transient response when using the adjustable output voltage type, the transient response could be affected by the external resistors. evaluate the circuit taking the actual conditions of use into account. RP108J no.ea - 203 - 150 81 7 9 a dustable o utput v oltage t ype s ettings ? output voltage setting method RP108J081x can be adjusted the output voltage by using the external divider resistors. if the v fb voltage fixed into the ic is described as setv fb , t he output voltage can be set by using the following equations setv fb is equal to 0. 8v. the v out pin of RP108J081x should be connected to the v fb pin. gnd v fb r ic r2 i ic i1 i2 r1 set v fb v out v out i1 = i ic + i2 ................................ ................................ ................................ ................................ .. (1) i2 = setv fb / r2 ................................ ................................ ................................ ......................... (2) thus, i1 = i ic + setv fb /r2 ................................ ................................ ................................ .................... (3) therefore, v out = setv fb r1 i1 ................................ ................................ ................................ ............ (4) put equation (3) into equation (4), then v out ........................................................................................................................................................ = setv fb + r 1 (i ic + setv fb / r 2 ) = setv fb (1+r1 / r 2) + r1 i ic ................................ ................................ ....................... (5) in equation (5), r1x i ic is the error - causing factor in v out . as for i ic , i ic = setv fb / r ic ................................ ................................ ................................ ........................ (6) therefore , the error - causing factor r1x i ic can be described as follows. r 1 i ic .................................................................................................................................................................................... = r 1 setv fb / r ic = setv fb r 1 / r ic ................................ ................................ ................................ ......... (7) for better accuracy, choosing r 1 (< RP108J no.ea - 203 - 150 81 7 10 reverse current protection circuit the rp108 j include s a reverse current p rotection c ircuit, which stops the reverse current from v out pin to v dd pin or to gnd pin when v out becomes higher than v in . usually, the ldo using pch output transistor contains a parasitic diode between v dd pin and v out pin . therefore, if v out is higher than v in , the parasitic diode becomes forward direction. as a result, the current flows from v out pin to v dd pin . the RP108J switches the mode to the reverse current protection mode before v in becomes lower than v out by c onnecting the parasitic diode of pch output transistor to the backward direction, and connecting the gate to v out pin . as a result, the pch output transistor is turned off and the all the current pathway s from v out pin to gnd pin are shut down to maintain the reverse current lower than 10 a. switching to either the normal mode or to the reverse current protection mode is determined by the magnitude of v in voltage and v out voltage. for the stable operation, offset and hyster e sis are set as the threshold. off set is set to 30mv (typ.25 c ) and hysteresis is set to 5mv (typ.25 c ). therefore, the minimum dropout voltage under the small load current condition is restricted by the value of 35mv (typ.25 c ). fig.1 and fig.2 show the diagrams of each mode, and fig.3 shows the load characteristics of each mode. when giving the v out pin a constant - voltage and decreasing the v in voltage, the dropout voltage will become lower than 30mv (typ.25 c ). as a result, the reverse current protection starts to function to stop the load current. by increasing the dropout voltage higher than 35mv (typ.25 c ), the protection mode will be released to let the load current to flow. if the dropout voltage to be used is lower than 30mv (typ.25 c ), the detection and the release may be repeate d. v dd gnd v out ce vref i out reverse detector v dd gnd v out ce vref i rev reverse detector fig.1 normal mode fig.2 reverse current protection mode fig . 3 reverse current protection mode detection / release & o u t p u t / r e v e r s e c u rr e n t i n p u t / o u t p u t v o l t a g e v rev _ det v rev _ rel v out v in 0 reverse current protection mode normal mode normal mode v i n / v o u t [ v ] i o u t / i r e v i out i rev reverse current / output current characteristics 35mv 30mv RP108J no.ea - 203 - 150 81 7 11 constant slope circuit (r p108jxx1b/xx1d ) r p108jxx1b/xx1d has a constant slope circuit (soft - start circuit) which allows the output voltage to start - up gradually. the capacitor to create the start - up slope is built - i n the ic so that it does not require any external components. the upper limit of inrush current during the start - up is controlled by the short current isc and the output current limit ilim. in t he following characteristics c out = 10 f (r load = 380 ) , the inrush current i rush is not controlled by the short current isc and the output current limit ilim. therefore the output voltage rises with the soft - start time (t slope ) set inside ic, and it enables to control the overshoot of the output voltage and t he inrush current. t slope is typ. 180 s . in the characteristics c out = 20 f , i rush a t the low output voltage is controlled by the short current isc. after the current is released from isc, the output voltage rises with the soft - start time (t slope ). in the characteristics c out = 100 f , i rush a t the low output voltage is controlled by the short current isc. after the current is released from isc, it is controlled by the output current limit. the output voltage rises with the soft - start time (t slope ) o r longer. the relation of the inrush current and the constant slope depends on the output voltage since the inrush current is a sum of the charge current of c out and the load current . use r p108jxx1e/xx1f to avoid an influence on peripheral components due t o the inrush current generated in the use environment conditions ( c out and output voltage). r p108 j381 b/d inrush current characteristics c in =4.7 = c in =4.7 = c in =4.7 = RP108J no.ea - 203 - 150 81 7 12 constant slope circuit ( r p108jxx1e/xx1f) r p108jxx1e/xx1f has a constant slope circuit (soft - start circuit) which allows the output voltage to start - up gradually. the capacitor to create the start - up slope is built - in the ic so that it does not require any external components. the upper limit of inrush current during the start - up is controlled by the output current limit ilim. as shown in t he following foldback c har acteristics , the inrush current is not controlled by the short current isc during the soft - start time at the start - up. therefore the output voltage rises with the soft - start time (t slope ) set inside ic, and it enables to control the overshoot of the output voltage and the inrush current. t slope is typ. 570 s ( max . 900 s /85 c ). use r p108jxx1b/xx1d to avoid an influence on peripheral components due to the output start - up time is slow in the system. in the characteristics c out = 20 f , the inrush current is lower or equal to the output current limit ilim. the output voltage rises with the soft - start time ( t slope ). similarly in the characteristics c out = 10 0 f , the inrush current is lower or equal to the output current limit ilim. the output voltage rises wit h the soft - start time ( t slope ). the relation of the inrush current and the constant slope depends on the output voltage since the inrush current is a sum of the charge current of c out and the load current . r p108 j381 e/f inrush current characteristics foldback characteristics (diagrammatic sketch) c in =4.7 = c in =4.7 = RP108J no.ea - 203 - 150 81 7 13 power dissipation on board on board (ultra high wattage land pattern) 3800 4800 package information p ower di ssipation (to -252-5 - p2) power dissipation (p d ) depends on conditions of mounting on board. this specification is based on the measurement conditions below. measurement conditions ultra high wattage land pattern standard land pattern environment mounting on board (wind velocity 0m/s) board material glass cloth epoxy plastic (four - layers) glass cloth epoxy plastic (double layers) board dimensions 76.2mm x 114.3mm x 0.8 mm 50mm x 50mm x 1.6mm copper ratio top, back side: 50mm square, approx.96 % , 2 nd , 3 rd layer: 50mm square, approx.100% top side: approx. 50%, back side: approx. 50% through - hole 0.4mm x 30pcs 0.5mm x 24pcs measurement results ( ta = 2 5 c, tjmax=125 c) ultra high wattage land pattern standard land pattern power dissipation 3800mw 1900mw thermal resistance ja= (125 - 25 c)/3.8w = 26 c/w ja=(125 - 25 q c)/1.9w= 53 q c/w t jc= 7 c/w jc= 17 c/w measurement board pattern ic mount area (unit : mm) the above graph shows the power dissipation of the package based on tjmax=125 c and tjmax=150 c . operating the ic in the shaded area in the graph might have an influence its lifetime. operating time must be within the time limit described in the table below, in case of operating in the shaded area. operating time estimated years (operating 4 hours/day ) 13,000 hours 9 years standard ultra high wattage RP108J no.ea - 203 - 150 81 7 14 ? package dimensions (to -252 -5 - p2) ? mark specification (to -252- 5 - p2) + - 15 ????? ? ? ? ? ? ? ? ? ? : product code ? refer to mark specification table ? ? : lot number ? alphanumeric serial number the tab on the bottom of the package enhances thermal performance and is electrically connected to gnd (substrate level). it is recommended that the tab be connected to the ground plane on the board, or otherwise be left floating. RP108J no.ea - 203 - 150 81 7 15 RP108J mark specification table (to -252-5 - p2) RP108Jxx1b RP108Jxx1 d part number ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? RP108J081b e 1 j 0 8 1 b 0.8 v RP108J081d e 1 j 0 8 1 d 0.8 v RP108J091b e 1 j 0 9 1 b 0.9 v RP108J091d e 1 j 0 9 1 d 0.9 v RP108J101b e 1 j 1 0 1 b 1.0 v RP108J101d e 1 j 1 0 1 d 1.0 v RP108J111b e 1 j 1 1 1 b 1.1 v RP108J111d e 1 j 1 1 1 d 1.1 v RP108J121b e 1 j 1 2 1 b 1. 2v RP108J121d e 1 j 1 2 1 d 1. 2v RP108J131b e 1 j 1 3 1 b 1.3 v RP108J131d e 1 j 1 3 1 d 1.3 v RP108J141b e 1 j 1 4 1 b 1.4 v RP108J141d e 1 j 1 4 1 d 1.4 v RP108J151b e 1 j 1 5 1 b 1.5 v RP108J151d e 1 j 1 5 1 d 1.5 v RP108J161b e 1 j 1 6 1 b 1.6 v RP108J161d e 1 j 1 6 1 d 1.6 v RP108J171b e 1 j 1 7 1 b 1.7 v RP108J171d e 1 j 1 7 1 d 1.7 v RP108J181b e 1 j 1 8 1 b 1.8 v RP108J181d e 1 j 1 8 1 d 1.8 v RP108J191b e 1 j 1 9 1 b 1.9 v RP108J191d e 1 j 1 9 1 d 1.9 v RP108J201b e 1 j 2 0 1 b 2.0 v RP108J201d e 1 j 2 0 1 d 2.0 v RP108J211b e 1 j 2 1 1 b 2.1 v RP108J211d e 1 j 2 1 1 d 2.1 v RP108J221b e 1 j 2 2 1 b 2.2 v RP108J221d e 1 j 2 2 1 d 2.2 v RP108J231b e 1 j 2 3 1 b 2.3v RP108J231d e 1 j 2 3 1 d 2.3v RP108J241b e 1 j 2 4 1 b 2.4v RP108J241d e 1 j 2 4 1 d 2.4v RP108J251b e 1 j 2 5 1 b 2.5v RP108J251d e 1 j 2 5 1 d 2.5v RP108J261b e 1 j 2 6 1 b 2.6v RP108J261d e 1 j 2 6 1 d 2.6v RP108J271b e 1 j 2 7 1 b 2.7v RP108J271d e 1 j 2 7 1 d 2.7v RP108J281b e 1 j 2 8 1 b 2.8v RP108J281d e 1 j 2 8 1 d 2.8v RP108J291b e 1 j 2 9 1 b 2.9v RP108J291d e 1 j 2 9 1 d 2.9v RP108J301b e 1 j 3 0 1 b 3.0v RP108J301d e 1 j 3 0 1 d 3.0v RP108J311b e 1 j 3 1 1 b 3.1v RP108J311d e 1 j 3 1 1 d 3.1v RP108J321b e 1 j 3 2 1 b 3.2v RP108J321d e 1 j 3 2 1 d 3.2v RP108J331b e 1 j 3 3 1 b 3.3v RP108J331d e 1 j 3 3 1 d 3.3v RP108J341b e 1 j 3 4 1 b 3.4v RP108J341d e 1 j 3 4 1 d 3.4v RP108J351b e 1 j 3 5 1 b 3.5v RP108J351d e 1 j 3 5 1 d 3.5v RP108J361b e 1 j 3 6 1 b 3.6v RP108J361d e 1 j 3 6 1 d 3.6v RP108J371b e 1 j 3 7 1 b 3.7v RP108J371d e 1 j 3 7 1 d 3.7v RP108J381b e 1 j 3 8 1 b 3.8v RP108J381d e 1 j 3 8 1 d 3.8v RP108J391b e 1 j 3 9 1 b 3.9v RP108J391d e 1 j 3 9 1 d 3.9v RP108J401b e 1 j 4 0 1 b 4.0v RP108J401d e 1 j 4 0 1 d 4.0v RP108J411b e 1 j 4 1 1 b 4.1v RP108J411d e 1 j 4 1 1 d 4.1v RP108J421b e 1 j 4 2 1 b 4.2v RP108J421d e 1 j 4 2 1 d 4.2v RP108J121b5 e 1 j 1 2 1 b 5 1.25v RP108J121d5 e 1 j 1 2 1 d 5 1.25v RP108J181b5 e 1 j 1 8 1 b 5 1.85v RP108J181d5 e 1 j 1 8 1 d 5 1.85v RP108J281b5 e 1 j 2 8 1 b 5 2.85v RP108J281d5 e 1 j 2 8 1 d 5 2.85v RP108J no.ea - 203 - 150 81 7 16 RP108Jxx1e RP108Jxx1 f part number ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? RP108J081 e e 1 j 0 8 1 e 0.8 v RP108J081 f e 1 j 0 8 1 f 0.8 v RP108J091 e e 1 j 0 9 1 e 0.9 v RP108J091 f e 1 j 0 9 1 f 0.9 v RP108J101 e e 1 j 1 0 1 e 1.0 v RP108J101 f e 1 j 1 0 1 f 1.0 v RP108J111 e e 1 j 1 1 1 e 1.1 v RP108J111 f e 1 j 1 1 1 f 1.1 v RP108J121 e e 1 j 1 2 1 e 1. 2v RP108J121 f e 1 j 1 2 1 f 1. 2v RP108J131 e e 1 j 1 3 1 e 1.3 v RP108J131 f e 1 j 1 3 1 f 1.3 v RP108J141 e e 1 j 1 4 1 e 1.4 v RP108J141 f e 1 j 1 4 1 f 1.4 v RP108J151 e e 1 j 1 5 1 e 1.5 v RP108J151 f e 1 j 1 5 1 f 1.5 v RP108J161 e e 1 j 1 6 1 e 1.6 v RP108J161 f e 1 j 1 6 1 f 1.6 v RP108J171 e e 1 j 1 7 1 e 1.7 v RP108J171 f e 1 j 1 7 1 f 1.7 v RP108J181 e e 1 j 1 8 1 e 1.8 v RP108J181 f e 1 j 1 8 1 f 1.8 v RP108J191 e e 1 j 1 9 1 e 1.9 v RP108J191 f e 1 j 1 9 1 f 1.9 v RP108J201 e e 1 j 2 0 1 e 2.0 v RP108J201 f e 1 j 2 0 1 f 2.0 v RP108J211 e e 1 j 2 1 1 e 2.1 v RP108J211 f e 1 j 2 1 1 f 2.1 v RP108J221 e e 1 j 2 2 1 e 2.2 v RP108J221 f e 1 j 2 2 1 f 2.2 v RP108J231 e e 1 j 2 3 1 e 2.3v RP108J231 f e 1 j 2 3 1 f 2.3v RP108J241 e e 1 j 2 4 1 e 2.4v RP108J241 f e 1 j 2 4 1 f 2.4v RP108J251 e e 1 j 2 5 1 e 2.5v RP108J251 f e 1 j 2 5 1 f 2.5v RP108J261 e e 1 j 2 6 1 e 2.6v RP108J261 f e 1 j 2 6 1 f 2.6v RP108J271 e e 1 j 2 7 1 e 2.7v RP108J271 f e 1 j 2 7 1 f 2.7v RP108J281 e e 1 j 2 8 1 e 2.8v RP108J281 f e 1 j 2 8 1 f 2.8v RP108J291 e e 1 j 2 9 1 e 2.9v RP108J291 f e 1 j 2 9 1 f 2.9v RP108J301 e e 1 j 3 0 1 e 3.0v RP108J301 f e 1 j 3 0 1 f 3.0v RP108J311 e e 1 j 3 1 1 e 3.1v RP108J311 f e 1 j 3 1 1 f 3.1v RP108J321 e e 1 j 3 2 1 e 3.2v RP108J321 f e 1 j 3 2 1 f 3.2v RP108J331 e e 1 j 3 3 1 e 3.3v RP108J331 f e 1 j 3 3 1 f 3.3v RP108J341 e e 1 j 3 4 1 e 3.4v RP108J341 f e 1 j 3 4 1 f 3.4v RP108J351 e e 1 j 3 5 1 e 3.5v RP108J351 f e 1 j 3 5 1 f 3.5v RP108J361 e e 1 j 3 6 1 e 3.6v RP108J361 f e 1 j 3 6 1 f 3.6v RP108J371 e e 1 j 3 7 1 e 3.7v RP108J371 f e 1 j 3 7 1 f 3.7v RP108J381 e e 1 j 3 8 1 e 3.8v RP108J381 f e 1 j 3 8 1 f 3.8v RP108J391 e e 1 j 3 9 1 e 3.9v RP108J391 f e 1 j 3 9 1 f 3.9v RP108J401 e e 1 j 4 0 1 e 4.0v RP108J401 f e 1 j 4 0 1 f 4.0v RP108J411 e e 1 j 4 1 1 e 4.1v RP108J411 f e 1 j 4 1 1 f 4.1v RP108J421 e e 1 j 4 2 1 e 4.2v RP108J421 f e 1 j 4 2 1 f 4.2v RP108J121 e 5 e 1 j 1 2 1 e 5 1.25v RP108J121 f 5 e 1 j 1 2 1 f 5 1.25v RP108J181 e 5 e 1 j 1 8 1 e 5 1.85v RP108J181 f 5 e 1 j 1 8 1 f 5 1.85v RP108J281 e 5 e 1 j 2 8 1 e 5 2.85v RP108J281 f 5 e 1 j 2 8 1 f 5 2.85v RP108J no.ea - 203 - 150 81 7 17 test circuit s fixed output voltage type (RP108Jxx1x) c 1 r p108j xx1 x v dd v out ce gnd v c 2 v out i out c 1 = ceramic 1 0 f c 2 =ceramic 1 0 f v fb v out c 1 v dd v out ce gnd c 2 a i ss r p108j xx1 x c 1 = ceramic 1 0 f c 2 =ceramic 1 0 f v fb test circuit for supply current v out c 1 v dd v out ce gnd c 2 a i ss r p108jxx1 x c 1 = ceramic 1 0 f c 2 =ceramic 1 0 f v fb test circuit for standby current RP108J no.ea - 203 - 150 81 7 18 adjustable output voltage setting type (RP108J081x) c 1 r p132x series v dd v out ce gnd v c 2 v out i out v dd v out ce gnd r p108j 081x v fb r2 r1 c 1 = ceramic 10 f c 2 =ceramic 10 f basic test circuit c 1 v dd v out ce gnd a i ss v out r p132x series r2 v dd v out ce gnd r p108j 081x v fb c 2 r1 c 1 = ceramic 10 f c 2 =ceramic 10 f test circuit for supply current c 1 v dd v out ce gnd a i ss v out r p132x series r2 v dd v out ce gnd r p108j 081x v fb c 2 r1 c 1 = ceramic 10 f c 2 =ceramic 10 f test circuit for standby current note : refer to adjustable output voltage type setting s for r1 and r2 . RP108J no.ea - 203 - 150 81 7 19 typical characteristics note: typical characteristics are intended to be used as reference data; they are not guaranteed. 1 ) output voltage vs. input voltage (c1 = c2 = ceramic10 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0 1 2 3 4 5 input voltage v in (v) output voltage v out (v) iout=1ma iout=100ma iout=1a 0 0.3 0.6 0.9 1.2 1.5 1.8 0 1 2 3 4 5 input voltage v in (v) output voltage v out (v) iout=1ma iout=100ma iout=1a 0 0.4 0.8 1.2 1.6 2 2.4 2.8 3.2 0 1 2 3 4 5 input voltage v in (v) output voltage v out (v) iout=1ma iout=100ma iout=1a 0 0.7 1.4 2.1 2.8 3.5 4.2 4.9 5.6 0 1 2 3 4 5 input voltage v in (v) output voltage v out (v) iout=1ma iout=100ma iout=1a RP108J no.ea - 203 - 150 81 7 20 2 ta 8 5 RP108J081x RP108J151x -40 -25 0 25 50 75 85 0.76 0.77 0.78 0.79 0.80 0.81 0.82 0.83 0.84 temperature ta (c) output voltage v out (v) -40 -25 0 25 50 75 85 1.46 1.47 1.48 1.49 1.50 1.51 1.52 1.53 1.54 temperature ta (c) output voltage v out (v) -40 -25 0 25 50 75 85 2.72 2.74 2.76 2.78 2.80 2.82 2.84 2.86 2.88 temperature ta (c) output voltage v out (v) -40 -25 0 25 50 75 85 4.12 4.14 4.16 4.18 4.20 4.22 4.24 4.26 4.28 temperature ta (c) output voltage v out (v) 0 50 100 150 200 250 300 350 400 450 0 1 2 3 4 5 input voltage v in (v) supply current i ss (a) 0 50 100 150 200 250 300 350 400 450 0 1 2 3 4 5 input voltage v in (v) supply current i ss (a) RP108J no.ea - 203 - 150 81 7 21 RP108J281x RP108J421x 4) short current limit vs. temperature/ current limit vs. tempera t ure RP108J includes a fold - back protection circuit. under conditions during a fold - back protection circuit works, thermal shutdown circuit starts to operate in order to prevent the self - heat generation . therefore, RP108J isn't able to test "output voltage vs. output current". RP108J081x RP108J081x 0 50 100 150 200 250 300 350 400 450 0 1 2 3 4 5 input voltage v in (v) supply current i ss (a) 0 50 100 150 200 250 300 350 400 450 0 1 2 3 4 5 input voltage v in (v) supply current i ss (a) -40 -25 0 25 50 75 85 2000 2500 3000 3500 4000 4500 5000 temperature ta (c) current limit i lim (ma) -40 -25 0 25 50 75 85 200 220 240 260 280 300 temperature ta (c) short current limit i lim (ma) RP108J no.ea - 203 - 150 81 7 22 5) supply current vs. temperature ( c1= c2=ceramic 10 RP108J081x RP108J151x 6) dropout voltage vs. output current (c1=c2=ceramic 10 -40 -25 0 25 50 75 85 300 310 320 330 340 350 360 370 380 390 400 temperature ta (c) supply current iss (a) -40 -25 0 25 50 75 85 300 310 320 330 340 350 360 370 380 390 400 temperature ta ( c ) supply current i ss ( a ) 0 100 200 300 400 500 600 700 0.0 0.5 1.0 1.5 2.0 2.5 3.0 output current i out (a) dropout voltage v dif (mv) 85 25 -40 0 0 100 200 300 400 500 600 700 800 900 0.5 1 1.5 2 2.5 3 3.5 4 4.5 dropout voltage [mv] vset [v] 300ma 3a RP108J no.ea - 203 - 150 81 7 23 8) ripple rejection vs. input voltage (c1 = c2 = 10 100?, RP108J081x RP108J251x RP108J421x 9) ripple rejection vs. frequency (c1 = none, c2 = 10 RP108J081x RP108J421x 0 10 20 30 40 50 60 70 80 90 100 1 2 3 4 5 input voltage v in (v) ripple rejection (db) 0.1khz 1khz 10khz 100khz 0 10 20 30 40 50 60 70 80 90 100 2 3 4 5 input voltage v in (v) ripple rejection (db) 0.1khz 1khz 10khz 100khz 0 10 20 30 40 50 60 70 80 90 100 4.00 4.25 4.50 4.75 5.00 5.25 input voltage v in (v) ripple rejection (db) 0.1khz 1khz 10khz 100khz 0 20 40 60 80 100 120 0.1 1 10 100 1000 frequancy f (khz) ripple rejection (db) v in =1.8v,ripple=0.2vp-p 0 20 40 60 80 100 120 0.1 1 10 100 1000 frequancy f (khz) ripple rejection (db) v in =5.2v,ripple=0.2vp-p RP108J no.ea - 203 - 150 81 7 24 10) input transient response (c1 = none, c2 = 10 RP108J081x RP108J421x 1 1) load transient response (c1 = c2 = 10 RP108J081x RP108J081x RP108J421x RP108J421x 0.78 0.79 0.80 0.81 0.82 0.83 0.84 -20 -10 0 10 20 30 40 50 60 70 80 time t (s) output voltage v out (v) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 input voltage v in (v) input voltage output voltage 4.16 4.17 4.18 4.19 4.20 4.21 4.22 -0.2 -0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 time t (ms) output voltage v out (v) 0 1 2 3 4 5 6 input voltage v in (v) input voltage output voltage 0.78 0.79 0.80 0.81 0.82 -40 -20 0 20 40 60 80 100 120 140 160 time t (s) output voltage v out (v) 0 500 1000 output current i out (ma) v in =1.8v output current 100ma ? 500ma output voltage 0.70 0.75 0.80 0.85 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 time t ( ms ) output voltage v out (v) 0 3 6 output current i out (ma) v in =1.8v output current 1ma ? 3a output voltage 0 4.16 4.17 4.18 4.19 -40 -20 0 20 40 60 80 100 120 140 160 time t (s) output voltage v out (v) 0 500 1000 output curren i out (ma) v in =5.25v output current 100ma ? 500ma output voltage 4.10 4.15 4.20 4.25 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 time t ( ms ) output voltage v out (v) 0 3 6 output current i out (ma) v in =5.25v output current 1ma ? 3a output voltage 0 RP108J no.ea - 203 - 150 81 7 25 1 2) turn on speed with ce pin (c1 =c2= ceramic 10 RP108J081 b/d RP108J151 b/d RP108J281 b/d RP108J421 b/d 1 3) turn off speed with ce pin (c1 =c2= ceramic 10 RP108J081 d/f RP108J151 d/f RP108J no.ea - 203 - 150 81 7 26 RP108J281 d/f RP108J421 d/f 1 4) inrush current RP108J081 b/d RP108J421 b/d RP108J no.ea - 203 - 150 81 7 27 esr vs. output current when using the ic, consider the following points: the relations between i out (output current) and esr of an output capacitor are shown below. the conditions when the white noise level is under 40v (avg.) are marked as the hatched area in the graph. measurement conditions frequency band : 10hz to 2mhz temperature : ?40 c to 85 c hatched area : noise level is under 40 v c1, c2 :10.0 f or more RP108J 081x RP108J 421x 0.01 0.1 1 10 100 0 1000 2000 3000 output current i out ( ma ) esr () 5.25v 0.01 0.1 1 10 100 0 1000 2000 3000 output current i out ( ma ) esr () 5.25v http://www.e-devices.ricoh.co.jp/en/ 4 b m f t 4 v q q p s u 0$? d f t 3 * $ 0 ) & - & $ 5 3 0 / * $ % & 7 * $ & 4 $ 0 - 5 % ) j h b t i j 4 i j o b h b x b 0$? d f * o u f s o b u j p o b m 4 b m f t ) j h b t i j 4 i j o b h b x b 4 i j o b h b x b l v 5 p l z p + b q b o 1 i p o f ' b y 3 * $ 0 ) & 6 3 0 1 & / & 5 ) & 3 - " / % 4 # 7 4 f n j d p o e v d u p s 4 v q q p s u $ f o u s f 1 s p g 8 ) , f f t p n m b b o % + " n t u f m w f f o 5 i f / f u i f s m b o e t 1 i p o f 3 * $ 0 ) & - & $ 5 3 0 / * $ % & 7 * $ & 4 , 0 3 & " $ 0 - 5 % ' ) b f t v o h # m e h 5 f i f s b o s p ( b o h o b n h v 4 f p v m , p s f b 1 i p o f ' b y 3 * $ 0 ) & - & $ 5 3 0 / * $ % & 7 * $ & 4 4 ) " / ( ) " * $ 0 - 5 % 3 p p n / p # v j m e j o h / p # j c p 3 p b e 1 v % p o h / f x % j t u s j d u 4 i b o h i b j 1 f p q m f t 3 f q v c m j d p g $ i j o b 1 i p o f ' b y 3 * $ 0 ) & - & $ 5 3 0 / * $ % & 7 * $ & 4 $ 0 - 5 % 5 b j q f j p$? d f 3 p p n ' / p ) f o h z b o h 3 e 5 b j q f j $ j u z 5 b j x b o 3 0 $ 1 i p o f ' b y ricoh is committed to reducing the environmental loading materials in electrical devices with a view to contributing to the protection of human health and the environment. ricoh has been providing rohs compliant products since april 1, 2006 and halogen-free products since april 1, 2012. halogen free 5 i f q s p e v d u t b o e u i f q s p e v d u t q f d j p d b u j p o t e f t d s j c f e j o u i j t e p d v n f o u b s f t v c k f d u u p d i b o h f p s e j t d p o u j o v b u j p o p g q s p e v d u j p o x j u i p v u o p u j d f g p s s f b t p o t t v d i b t j n q s p w f n f o u 5 i f s f g p s f c f g p s f e f d j e j o h u p v t f u i f q s p e v d u t q m f b t f s f g f s u p 3 j d p i t b m f t s f q s f t f o u b u j w f t g p s u i f m b u f t u j o g p s n b u j p o u i f s f p o 5 i f n b u f s j b m t j o u i j t e p d v n f o u n b z o p u c f d p q j f e p s p u i f s x j t f s f q s p e v d f e j o x i p m f p s j o q b s u x j u i p v u q s j p s x s j u u f o d p o t f o u p g 3 j d p i 1 m f b t f c f t v s f u p u b l f b o z o f d f t t b s z g p s n b m j u j f t v o e f s s f m f w b o u m b x t p s s f h v m b u j p o t c f g p s f f y q p s u j o h p s p u i f s x j t f u b l j o h p v u p g z p v s d p v o u s z u i f q s p e v d u t p s u i f u f d i o j d b m j o g p s n b u j p o e f t d s j c f e i f s f j o 5 i f u f d i o j d b m j o g p s n b u j p o e f t d s j c f e j o u i j t e p d v n f o u t i p x t u z q j d b m d i b s b d u f s j t u j d t p g b o e f y b n q m f b q q m j d b u j p o d j s d v j u t g p s u i f q s p e v d u t 5 i f s f m f b t f p g t v d i j o g p s n b u j p o j t o p u u p c f d p o t u s v f e b t b x b s s b o u z p g p s b h s b o u p g m j d f o t f v o e f s 3 j d p i t p s b o z u i j s e q b s u z t j o u f m m f d u v b m q s p q f s u z s j h i u t p s b o z p u i f s s j h i u t 5 i f q s p e v d u t m j t u f e j o u i j t e p d v n f o u b s f j o u f o e f e b o e e f t j h o f e g p s v t f b t h f o f s b m f m f d u s p o j d d p n q p o f o u t j o t u b o e b s e b q q m j d b u j p o t p$? d f f r v j q n f o u u f m f d p n n v o j d b u j p o f r v j q n f o u n f b t v s j o h j o t u s v n f o u t d p o t v n f s f m f d u s p o j d q s p e v d u t b n v t f n f o u f r v j q n f o u f u d 5 i p t f d v t u p n f s t j o u f o e j o h u p v t f b q s p e v d u j o b o b q q m j d b u j p o s f r v j s j o h f y u s f n f r v b m j u z b o e s f m j b c j m j u z g p s f y b n q m f j o b i j h i m z t q f d j p d b q q m j d b u j p o x i f s f u i f g b j m v s f p s n j t p q f s b u j p o p g u i f q s p e v d u d p v m e s f t v m u j o i v n b o j o k v s z p s e f b u i b j s d s b g u t q b d f w f i j d m f o v d m f b s s f b d u p s d p o u s p m t z t u f n u s b$? d d p o u s p m t z t u f n b v u p n p u j w f b o e u s b o t q p s u b u j p o f r v j q n f o u d p n c v t u j p o f r v j q n f o u t b g f u z e f w j d f t m j g f t v q q p s u t z t u f n f u d t i p v m e p s t u d p o u b d u v t 8 f b s f n b l j o h p v s d p o u j o v p v t f$? p s u u p j n q s p w f u i f r v b m j u z b o e s f m j b c j m j u z p g p v s q s p e v d u t c v u t f n j d p o e v d u p s q s p e v d u t b s f m j l f m z u p g b j m x j u i d f s u b j o q s p c b c j m j u z * o p s e f s u p q s f w f o u b o z j o k v s z u p q f s t p o t p s e b n b h f t u p q s p q f s u z s f t v m u j o h g s p n t v d i g b j m v s f d v t u p n f s t t i p v m e c f d b s f g v m f o p v h i u p j o d p s q p s b u f t b g f u z n f b t v s f t j o u i f j s e f t j h o t v d i b t s f e v o e b o d z g f b u v s f p s f d p o u b j o n f o u g f b u v s f b o e g b j m t b g f g f b u v s f 8 f e p o p u b t t v n f b o z m j b c j m j u z p s s f t q p o t j c j m j u z g p s b o z m p t t p s e b n b h f b s j t j o h g s p n n j t v t f p s j o b q q s p q s j b u f v t f p g u i f q s p e v d u t " o u j s b e j b u j p o e f t j h o j t o p u j n q m f n f o u f e j o u i f q s p e v d u t e f t d s j c f e j o u i j t e p d v n f o u 1 m f b t f d p o u b d u 3 j d p i t b m f t s f q s f t f o u b u j w f t t i p v m e z p v i b w f b o z r v f t u j p o t p s d p n n f o u t d p o d f s o j o h u i f q s p e v d u t p s u i f u f d i o j d b m j o g p s n b u j p o |
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