ap7217 500ma cmos ldo ap7217 document number: ds31292 rev. 4 - 2 1 of 10 www.diodes.com april 2010 ? diodes incorporated description the ap7217 low-dropout linear regulator operates from a 3.3v to 5.5v supply and delivers a guaranteed 500ma (min) continuous load current. the high-accuracy output voltage is preset to an internally trimmed voltage. an active-low open-drain reset output remains asserted for at least 20ms (typ) after output voltage reaches v df . the space-saving sop-8l package is suitable for ?pocket? and hand-held applications. features ? very low dropout voltage ? low current consumption: typ. 50 a ? output voltage: 3.3v ? guaranteed 500ma (min) output ? input range up to 5.5v ? current limiting ? stable with either electrolytic capacitor or low-esr mlcc (multi-layer ceramic capacitor) low temperature coefficient ? sop-8l: available in ?green? molding compound (no br, sb) ? lead free finish/ rohs compliant (note 1) pin assignments 1 2 3 4 6 5 en sop-8l ap7217 ( top view ) vr out nc nc v in gnd nc vd out 8 7 applications ? hd/ blueray dvd & mp3/4 players ? mobile handsets and smartphones ? digital still camera ? hand-held computers notes: 1. eu directive 2002/95/ec (rohs). all applicabl e rohs exemptions applied. please visit our website at http://www.diodes.com/products/lead_free.html . typical application circuit ap7217 v in vd out vr out en gnd 100k vd out u1 4 6 2 8 v in c in 1uf 7 c out 1uf on off vr out
ap7217 500ma cmos ldo ap7217 document number: ds31292 rev. 4 - 2 2 of 10 www.diodes.com april 2010 ? diodes incorporated functional block diagram enable bandgap current limit - error amp + + - 1.2v r3 r4 vd comp. r1 r2 en vd out gnd vr out v in on off pin descriptions pin name pin no. description nc 1 no connection vr out 2 voltage output nc 3 no connection v in 4 supply voltage nc 5 no connection vd out 6 v d output (reset on i/p) gnd 7 ground en 8 enable (v r on/off)
ap7217 500ma cmos ldo ap7217 document number: ds31292 rev. 4 - 2 3 of 10 www.diodes.com april 2010 ? diodes incorporated absolute maximum ratings symbol parameter rating unit esd hbm human bod y model esd protection 2 kv esd mm machine model esd protection 450 v v in input voltage +6 v i out output current p d / (v in -v o ) ma vr out output voltage gnd - 0.3 ~ v in + 0.3 v t j operating junction temperature range -40 to +125 oc t j ( max ) maximum junction temperature 150 oc p d internal power dissipation 1.2 w recommended operating conditions symbol parameter min max unit v in input voltage 3.3 5.5 v i out output current 0 500 ma t a operating ambient temperature -40 85 oc
ap7217 500ma cmos ldo ap7217 document number: ds31292 rev. 4 - 2 4 of 10 www.diodes.com april 2010 ? diodes incorporated electrical characteristics (v in = 12v, t a = +25c, unless otherwise noted) (t a = 25 c, c in = 1f, c out = 1f, v en = v in , unless otherwise noted) symbol parameter test conditions min typ. max unit i q quiescent current i o = 0ma - 50 70 a i stb standby current v en = off v in = 5.0v 15 30 a vr out output voltage accuracy i o = 30ma, v in = 5v 3.234 3.300 3.366 v vr out temperature coefficient -40 c to 85 c, i out = 30ma 100 ppm / o c v dropout dropout voltage i out = 100ma 100 250 mv i out maximum output current v in = 5.3v 500 ma i limit current limit v in = 5.3v 600 ma i short short circuit current v in = 5.3v 50 ma v line / v in /vr out line regulation 4.3v ? v in ? 5.5v; i out = 30ma 0.01 0.2 %/v vr out load regulation 1ma ? i out ? 100ma, v in = 5.3v 15 50 mv psrr power supply rejection v in = 4.3v+ 0.5vp- pac, i out = 50ma f= 1khz 55 db v eh en input threshold output on 1.6 v v el output off 0.25 v i en enable pin current -0.1 0.1 a v df detect fall voltage 3.83 3.91 3.98 v v hysteresis v d hysteresis range v df x1.02 v df x1.05 v df x1.08 v ivd out vd supply current vd out = 0.5v v in = 2.0v 3.0v 20 30 ma t rp v dout delay time v in = 1.8v to vdf+ 1v 10 20 40 msec ja thermal resistance junction to ambient sop-8l (note 2) 134 oc/w jc thermal resistance junction to case sop-8l (note 2) 28 oc/w notes: 2. test conditions for sop-8l: devices mounted on fr-4 pc board, mrp, 2oz copper layout, calibrate at t j =150 oc, measure at t a =25oc, minimum recommended pad layout
ap7217 500ma cmos ldo ap7217 document number: ds31292 rev. 4 - 2 5 of 10 www.diodes.com april 2010 ? diodes incorporated typical performance characteristics vcc vs. quiescent current 0 10 20 30 40 50 60 70 80 90 100 3.6 4 4.3 5 5.5 vcc (v) iccq (ua) iout vs. dropout voltage 0 100 200 300 400 500 600 700 800 900 1000 30 100 300 500 iout (ma) dropout (mv) delay time vs. temperature 15 16 17 18 19 20 21 22 23 24 -40 25 85 100 temperature( o c) delay time (ms) vcc vs. standby current 0 10 20 30 40 50 60 70 3.64 4.355.5 vcc (v) i-standby (ua)
ap7217 500ma cmos ldo ap7217 document number: ds31292 rev. 4 - 2 6 of 10 www.diodes.com april 2010 ? diodes incorporated typical performance characteristics (continued) load transient response (v in =4.3v, i out =0~500ma) load transient response (v in =5.5v, i out =0~500ma) load transient response (v in =4.3v, i out =100~300ma) load transient response (v in =5.5v, i out =100~300ma) v in vr out i out v in vr out i out i out i out vr out vr out v in v in
ap7217 500ma cmos ldo ap7217 document number: ds31292 rev. 4 - 2 7 of 10 www.diodes.com april 2010 ? diodes incorporated timing diagram 20msec-typ. v in vd out en vr out 1.8v t rp application note input capacitor a 1 p f ceramic capacitor is recommended to connect between in and gnd pins to decouple input power supply glitch and noise. the amount of the capacitance may be in creased without limit. a lower esr (equivalent series resistance) capacitor allows the use of less capacitance, while higher esr type requires more capacitance. this input capacitor must be located as close as possible to the device to assure input stability and less noise. for pcb layout, a wide copper trace is required for both in and gnd. output capacitor the output capacitor is required to stabilize and help the transient response of the ldo. the ap7217 is designed to have excellent transient response for most applicati ons with a small amount of output capacitance. the ap7217 is stable with any small ceramic output capacitors of 1.0 p f or higher value, and the temperature coefficients of x7r or x5r type. additional capacitance helps to r educe undershoot and overshoot during transient. for pcb layout, the output capacitor must be placed as close as possible to out and gnd pins, and keep the leads as short as possible. enable/shutdown operation the ap7217 is turned on by setting the en pin high, and is turn ed off by pulling it low. if this feature is not used, the en pin should be tied to in pin to keep the regulator output on at all time. to ensure proper operation, the signal source used to drive the en pin must be able to swing above and below the specified turn-on/off voltage thresholds listed in the electrical characteristics section under v il and v ih . vr out vd out en=0 0v en=1 3.3v current limit protection when output current at out pin is higher than current limit threshold, the current limit protection will be triggered and clamp the output current to approximately 600ma to prev ent over-current and to protect the regulator from damage due to overheating.
ap7217 500ma cmos ldo ap7217 document number: ds31292 rev. 4 - 2 8 of 10 www.diodes.com april 2010 ? diodes incorporated application note short circuit protection when vrout pin is shorted to gnd or vrout voltage is le ss than 200mv, short circuit protection will be triggered and clamp the output current to approximately 50ma. vd out (reset output) ---open-drain active-low reset output--- in general, vd out is pulled up by a resistor (100kohm) to v in . the ap7217 microprocess (up) supervisory circuitry asserts a guaranteed logic-low reset during pow er-up and power-down. reset is asserted asserts when v in is below the reset threshold and remain asserted for at least t rp after v in rises above the reset threshold. as long as v in is lower than the reset threshold, vd out remains at logic "0". when v in become higher than v th , a logic "1" is asserted after a time delay defined by t rp . ordering information ap 7217 - 33 s g - 13 s : sop-8l output voltage package 33 : 3.3v packing green g : green 13 : tape & reel device package code packaging (note 3) 13? tape and reel quantity part number suffix ap7217-33sg-13 s sop-8l 2500/tape & reel -13 notes: 3. pad layout as shown on diodes inc. suggested pad layout document ap02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. marking information ( top view ) 7217-33 yy ww x x logo part number 5 8 4 1 ww : week : 01~52; 52 yy : year : 08, 09,10~ g : green x : internal code represents 52 and 53 week
ap7217 500ma cmos ldo ap7217 document number: ds31292 rev. 4 - 2 9 of 10 www.diodes.com april 2010 ? diodes incorporated package outline dimensions (all dimensions in mm)
ap7217 500ma cmos ldo ap7217 document number: ds31292 rev. 4 - 2 10 of 10 www.diodes.com april 2010 ? diodes incorporated important notice diodes incorporated makes no warranty of any kind, express or implied, with regards to this document, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose (and their equivalents under the laws of any jurisdiction). diodes incorporated and its subsidiaries rese rve the right to make modifications, enhanc ements, improvements, corrections or ot her changes without further notice to this document and any product described herein. diodes incorporated does not assume any liabi lity arising out of the application or use of this document or an y product described herein; neither does diodes incorporated convey any license under its patent or trademark rights, nor the rights of othe rs. any customer or user of this document or products desc ribed herein in such applications shall assume all risks of such use and will agree to hold diodes incorporated and all the companies whose products are represented on diodes incorp orated website, harmless against all damages. diodes incorporated does not warrant or accept any liability what soever in respect of any prod ucts purchased through unauthoriz ed sales channel. should customers purchase or use diodes in corporated products for any unintended or unauthorized application, customers shall indemnify and hold diodes incorporated and its representatives har mless against all claims, damages, expenses, and attorney fee s arising out of, directly or indirectly, any claim of personal injury or death a ssociated with such unintended or unauthorized a pplication. products described herein may be covered by one or more united states, international or foreign patents pending. product names and markings noted herein may also be covered by one or more united states, international or foreign trademarks. life support diodes incorporated products are specifica lly not authorized for use as critical co mponents in life support devices or systems without the express written approval of the chief executive officer of diodes incorporated. as used herein: a. life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when pr operly used in accordance with instructions for use provided in the labeling can be reasonably expected to re sult in significant injury to the user. b. a critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or to affect its safety or effectiveness. customers represent that they have all necessary expertise in t he safety and regulatory ramifications of their life support dev ices or systems, and acknowledge and agree that they are solely responsi ble for all legal, regulatory and safety-related requirements concerning their products and any use of diode s incorporated products in such safety-cri tical, life support devices or systems, notwithstanding any devices- or systems-related information or support that may be provided by diodes incorporated. further, customers must fully indemnify diodes incorporated and its repr esentatives against any damages ar ising out of the use of diodes incorporated products in such safety-c ritical, life support devices or systems. copyright ? 2010, diodes incorporated www.diodes.com
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