ultra low dropout linear regulator TJ1118 aug . 201 3 - r1. 5 htc 1 features ? ultra low dropout voltage ? low ground pin current ? excellent line and load regulation ? available in sot - 223, to - 252 package ? fixed output voltages : 1.0v, 1.1v, 1.2v, 1.5v, 1.8v, 2.5v, and 3.3v ? over - temperature/over - current protection ? - 40 to 125 j unction temperature range ? moisture sensitivity level 3 application ? battery powered equipments ? motherboards and graphic cards ? microprocessor power supplies ? peripheral cards ? high efficiency linear regulators ? battery chargers sot - 223 3l pkg to - 252 3l pk g ordering information device package TJ1118s - x.x sot - 223 3l TJ1118grs - x.x to - 252 3l x.x = output voltage = 1.0, 1.1, 1.2, 1.5, 1.8, 2.5, and 3.3 description the TJ1118 series of high performance ultra low - dropout linear regulators operat es from 2.5v to 5.5v input supply and provides ultra low - dropout voltage, high output current with low ground current. wide range of preset output voltage options are available. these ultra low dropout linear regulators respond fast to step changes in load which makes them suitable for low voltage micro - processor applications. the TJ1118 is developed on a cmos process technology which allows low quiescent current operation independent of output load current. this cmos process also allows the TJ1118 to opera te under extremely low dropout conditions. absolute maximum ratings characteristic symbol min. max. unit input supply voltage (survival) v in - 0.3 6.5 v maximum output current i max - 1.0 1) a lead temperature (soldering, 5 sec) t sol 260 storage temper ature range t stg - 65 150 operating junction temperature range t jopr - 40 125 1) refer to the ordering information table in this data sheet operating ratings characteristic symbol min. max. unit recommend operating input voltage v in 2.5 5 .5 v
ultra low dropout linear regulator TJ1118 aug . 201 3 - r1. 5 htc 2 ordering information v out package order no. description (maximum output curre nt) supplied as status 1.0v sot - 223 3l TJ1118s - 1. 0 0.8 a reel contact us to - 252 3l TJ1118grs - 1. 0 0.8 a reel contact us 1.1v sot - 223 3l TJ1118s - 1. 1 0.8 a reel contact us to - 252 3l TJ1118grs - 1. 1 0.8 a reel contact us 1.2 v sot - 223 3l TJ1118s - 1.2 0.8 a reel c ontact us to - 252 3l TJ1118grs - 1.2 0.8 a reel contact us 1.5 v sot - 223 3l TJ1118s - 1.5 0.8 a reel contact us to - 252 3l TJ1118grs - 1.5 0.8 a reel contact us 1.8 v sot - 223 3l TJ1118s - 1.8 0.8 a reel contact us to - 252 3l TJ1118grs - 1.8 0.8 a reel cont act us 2.5 v sot - 223 3l TJ1118s - 2.5 1a reel contact us to - 252 3l TJ1118grs - 2.5 1a reel contact us 3.3 v sot - 223 3l TJ1118s - 3.3 1a reel contact us to - 252 3l TJ1118grs - 3.3 1a reel contact us p a c k a g e t y p e r o o t n a m e p r o d u c t c o d e t j 1 1 1 8 o u t p u t v o l t a g e : 1 . 0 v / 1 . 1 v / 1 . 2 v / 1 . 5 v / 1 . 8 v / 2 . 5 v / 3 . 3 v s r s g r e e n m o d e g : h a l o g e n f r e e b l a n k : p b f r e e : s o t - 2 2 3 : t o - 2 5 2
ultra low dropout linear regulator TJ1118 aug . 201 3 - r1. 5 htc 3 pin configurati on sot - 223 3l to - 252 3l pin description pin no. sot - 223 / to - 252 3ld name function 1 gnd ground 2 vout output voltage 3 vin input voltage typical application - typical application circuit * TJ1118 can deliver a continuous current of up to 0.8a /1a the full operating temperature. however, the output current is limited by the restriction of power dissipation which differs from pac kages. a heat sink may be required depending on the maximum power dissipation and maximum ambient temperature of application. with respect to the applied package, the maximum output current of 0.8a/ 1a may be still undeliverable. * see application infor mation. gnd vout vin gnd vout vin v i n v o u t t j 1 1 1 8 g n d i n p u t o u t p u t 1 0 f 1 0 f
ultra low dropout linear regulator TJ1118 aug . 201 3 - r1. 5 htc 4 electrical characteristics for vout 2.5v (note 1) limits in standard typeface are for t j =25 , and limits in boldface type apply over the full operating temperature range . unless otherwise specified: v in (note 2) = v o(nom) + 1v, i l = 10 ma, c in = 10 uf, c out = 10 uf , vout 2.5v parameter symbol test condition min. typ. max. unit output voltage tolerance v o 10 ma < i l < 1a v out +1v < v in < 5.5v - 2 - 3 0 2 3 % output current i o vout (note 3) v line v out +1v < v in < 5.5v - 0.15 - 0.40 %/v load regulation (note 3, 4) v load 10 ma < i l < 1a - 1.5 - % dropout voltage (note 5) v drop i l = 100ma 55 - 80 mv i l = 500ma 200 - 300 mv i l = 1a 450 - 650 mv ground pin current (note 6) i gnd1 i l = 100ma - 0.12 0.15 - ma i l = 1a - 0.12 0.20 - power supply rejection ratio psrr f = 1khz - 55 - db thermal shutdown temperature t sd - 165 - note 1. stresses listed as the absolute maximum ratings may cause permanent damage to the device. these are for stress rating s. functional operating of the device at these or any other conditions beyond those indicated in the operational sections of the specificat ions is not implied. exposure to absolute maximum rating conditions for extended periods may remain possibly to affec t device reliability. note 2. the minimum operating value for input voltage is equal to either (v out,nom + v drop ) or 2.5v, whichever is greater. note 3. output voltage line regulation is defined as the change in output voltage from the nominal value due to change in the input line voltage. output voltage load regulation is defined as the change in output voltage from the nominal value due to change in load curren t. note 4. regulation is measured at constant junction temperature by using a 10ms current puls e. devices are tested for load regulation in the load range from 10ma to 1 a. note 5. dropout voltage is defined as the minimum input to output differential voltage at which the output drops 2% below the nominal value. dropout voltage specification applies only to output voltages of 2.5v and above. for output voltages below 2.5v, the dropout voltage is nothing but the input to output differential, since the minimum input voltage is 2.5v. note 6. ground current, or quiescent current, is the difference between input and output currents. it's defined by i gnd1 = i in - i out under the given loading condition. the total current drawn from the supply is the sum of the load current plus the ground pin curre nt.
ultra low dropout linear regulator TJ1118 aug . 201 3 - r1. 5 htc 5 electrical characteristics for vout < 2.5v (note 1) limits in standard typeface are for t j =25 , and limits in boldface type apply over the full operating temperature range . unless otherwise specified: v in (note 2) = v o(nom) + 1v, i l = 10 ma, c in = 10 uf, c out = 10 uf , vout < 2.5v parameter symbol test c ondition min. typ. max. unit output voltage tolerance v o 10 ma < i l < 800m a v out +1v < v in < 5.5v - 2 - 3 0 2 3 % output current i o vout < 2.5v - - 0.8 a line regulation (note 3) v line v out +1v < v in < 5.5v - 0.15 - 0.40 %/v load regulation (note 3, 7 ) v lo ad 10 ma < i l < 8 00m a - 1.5 - % dropout voltage (note 5) v drop i l = 100ma 55 - 80 mv i l = 500ma 200 - 300 mv i l = 800m a 450 - 650 mv ground pin current (note 6) i gnd1 i l = 100ma - 0.12 0.15 - ma i l = 8 00m a - 0.12 0.20 - power supply rejection ratio psrr f = 1khz - 55 - db thermal shutdown temperature t sd - 165 - note 7 . regulation is measured at constant junction temperature by using a 10ms current pulse. devices are tested for load regulati on in the load range from 10ma to 800m a.
ultra low dropout linear regulator TJ1118 aug . 201 3 - r1. 5 htc 6 typical operating characteristic (vin: 2v/div, vout: 2v/div, 1ms/div) vin=3.5v, vout=2.5v @ iout=0a start up transient response (vin: 2v/div, vout: 2v/div, 1ms/div) vin=3.5v, vout=2.5v @ i out=1a start up transient response (vin: 2v/div, vout: 20mv/div, 10ms/div) vin=3.5v to 5.5v, vout=2.5v @ iout=10ma line transient response (vin: 2v/div, vout: 20mv/div, 10ms/div) vin=5.5v to 3.5v, vout=2.5v @ iout=10ma line transient response (vout: 5 0mv/div, iout: 500ma/div, 10ms/div) vin=3.5v, vout=2.5v @ iout=10ma to 0.5a load transient response (vout: 50mv/di v , iout: 500ma/div, 10ms/div) vin=3.5v, vout=2.5v @ iout=0.5a to 10ma load transient response
ultra low dropout linear regulator TJ1118 aug . 201 3 - r1. 5 htc 7 (vout: 50mv/div, iout: 500ma/div, 10ms/div ) vin=3.5v, vout=2.5v @ iout=10ma to 1a load transient response (vout: 50mv/di v , iout: 500ma/div, 10ms/div) vin=3.5v, vout=2.5v @ iout=1a to 10ma load transient response dropout voltage vs. ambient temperature power supply rejection ratio - 90 - 80 - 70 - 60 - 50 - 40 - 30 - 20 - 10 0 1.e+01 1.e+02 1.e+03 1.e+04 1.e+05 1.e+06 ripple rejection [db] frequency [hz]
ultra low dropout linear regulator TJ1118 aug . 201 3 - r1. 5 htc 8 application information introduction TJ1118 is intended for applications where high current capability and very low dropout voltage are required. it provides a simple, low cost solution that occupies very little pcb estate. component selection input capacitor : a large bulk capacitance over than 4.7uf should be closely placed to the input supply pin of the TJ1118 to ensure that the input supply voltage does not sag. also a minimum of 4.7uf ceramic capacitor is re commended to be placed directly next to the v in pin. it allows for the device being some distance from any bulk capacitor on the rail. additionally, input droop due to load transients is reduced, improving load transient response. output capacitor : a m inimum ceramic capacitor over than 4.7uf should be very closely placed to the output voltage pin of the TJ1118. increasing capacitance will improve the overall transient response and stability. maximum output current capability the TJ1118 can deliver a c ontinuous current of 0.8a/ 1a over the full operating junction temperature range. however, the output current is limited by the restriction of power dissipation which differs from packages. a heat sink may be required depending on the maximum power dissipa tion and maximum ambient temperature of application. with respect to the applied package, the maximum output current of 0.8a/ 1a may be still undeliverable due to the restriction of the power dissipation of TJ1118. under all possible conditions, the junct ion temperature must be within the range specified under operating conditions. the temperatures over the device are given by: t c = t a + p d x ca / t j = t c + p d x jc / t j = t a + p d x ja where t j is the junction temperature, t c is the case temperatur e, t a is the ambient temperature, p d is the total power dissipation of the device, ca is the thermal resistance of case - to - ambient, jc is the thermal resistance of junction - to - case, and ja is the thermal resistance of junction to ambient. the total powe r dissipation of the device is given by: p d = p in C p out = (v in x i in ) C (v out x i out ) = (v in x (i out +i gnd )) C (v out x i out ) = (v in - v out ) x i out + v in x i gnd where i gnd is the operating ground current of the device which is specified at the electrical ch aracteristics. the maximum allowable temperature rise (t rmax ) depends on the maximum ambient temperature (t amax ) of the application, and the maximum allowable junction temperature (t jmax ): t rmax = t jmax C t amax the maximum allowable value for juncti on - to - ambient thermal resistance, ja , can be calculated using the formula: ja = t rmax / p d = (t jmax C t amax ) / p d TJ1118 is available in sot - 223, and to - 252 packages. the thermal resistance depends on amount of copper area or heat sink, and on air fl ow. if the maximum allowable value of ja calculated above is as described in table 1, no heat sink is needed since the package can dissipate enough heat to satisfy these requirements. if the value for allowable ja falls near or below these limits, a heat sink or proper area of copper plane is required.
ultra low dropout linear regulator TJ1118 aug . 201 3 - r1. 5 htc 9 table. 1. absolute maximum ratings of thermal resistance no heat sink / no air flow / no adjacent heat source / t a = 25c characteristic symbol rating unit thermal resistance junction - to - ambient / sot - 22 3 ja - sot223 140 c/w thermal resistance junction - to - ambient / to - 252 ja - to252 105 c/w in case that there is no cooling solution and no heat sink / minimum copper plane area for heat sink, the maximum allowable power dissipation of each package is as fo llow; characteristic symbol rating unit maximum allowable power dissipation at t a =25c / sot - 223 p dmax - sot223 0.714 w maximum allowable power dissipation at t a =25c / to - 252 p dmax - to252 0.952 w - please note that above maximum allowable power dissip ation is based on the minimum copper plane area which does not exceed the proper footprint of the package. and the ambient temperature is 25c. if proper cooling solution such as heat sink, copper plane area, air flow is applied, the maximum allowable p ower dissipation could be increased. however, if the ambient temperature is increased, the allowable power dissipation would be decreased. for example, in case of sot - 223 and to - 252 package, ja - sot223 is 140 c/w and ja - to52 is 105 c/w, however, as s hown in below graph, ja could be decreased with respect to the copper plane area. so, the specification of maximum power dissipation for an application is fixed, the proper copper plane area could be estimated by following graphs. as shown in graph, wid er copper plane area leads lower ja . j u n c t i o n t o a m b i e n t t h e r m a l r e s i s t a n c e , j a v s . 1 o u n c e c o p p e r a r e a [ s o t - 2 2 3 p a c k a g e ] j u n c t i o n t o a m b i e n t t h e r m a l r e s i s t a n c e , j a v s . 2 o u n c e c o p p e r a r e a [ t o - 2 5 2 p a c k a g e ]
ultra low dropout linear regulator TJ1118 aug . 201 3 - r1. 5 htc 10 the maximum allowable power dissipation is also influenced by the ambient temperature. with the above ja - copper plane area relationship, the maxim um allowable power dissipation could be evaluated with respect to the ambient temperature. as shown in graph, the higher copper plane area leads ja . and the higher ambient temperature leads lower maximum allowable power dissipation. all this relation ship is based on the aforesaid equation ; ja = t rmax / p d = (t jmax C t amax ) / p d .
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