ap7217c 1.25v 600ma cmos ldo ap7217c rev. 3 1 of 9 october 2009 ds31424 www.diodes.com ? diodes incorporated ? very low dropout voltage ? low current consumption: typ. 40a ? output voltage: 1.25v ? guaranteed 600ma (min) output ? input range up to 5.5v ? current limiting ? stability with low esr capacitors ? thermal shutdown protection ? low temperature coefficient ? sop-8l-ep: available in ?green? molding compound (no br, sb) ? lead free finish / rohs compliant (note 1) the ap7217c low-dropout linear regulator operates from a 2.5v to 5.5v supply and delivers a guaranteed 600ma (min) continuous load current. the space-saving sop-8l-ep package is suitable for ?pocket? and hand-held applications. applications ? cd and mp3 players ? cellular and pcs phones ? digital still camera ? hand-held computers typical application ap7217c v in v out en gnd u1 42 8 v in c in 1uf 7 c out 1uf on off v out features general description
ap7217c 1.25v 600ma cmos ldo ap7217c rev. 3 2 of 9 october 2009 ds31424 www.diodes.com ? diodes incorporated ap 7217c - 13 sp g - 13 sp : sop-8l-ep output voltage package packing green g : green 13 : tape & reel 13 : 1.25v 13? tape and reel device package code packaging (note 2) quantity part number suffix AP7217C-13SPG-13 sp sop-8l-ep 2500/tape & reel -13 notes: 1. eu directive 2002/95/ec (rohs). all applicable rohs exemptions applied. please visit our website at http://www.diodes.com/products/lead_free.html . 2. 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. pin assignments (1) sop-8l-ep 1 2 3 4 6 5 en v out gnd v in gnd gnd 8 7 ( top view ) gnd gnd sop-8l-ep pin descriptions pin name pin no. description gnd 1, 3, 5, 6, 7 ground v out 2 voltage output v in 4 supply voltage en 8 high enable ordering information
ap7217c 1.25v 600ma cmos ldo ap7217c rev. 3 3 of 9 october 2009 ds31424 www.diodes.com ? diodes incorporated block diagram enable bandgap current limit - error amp + r1 r2 en gnd v out v in on off absolute maxi mum ratings symbol parameter rating unit esd hbm human body model esd protection 3.5 kv esd mm machine model esd protection 500 v v in input voltage +6 v i out output current p d / (v in -v o ) ma p d power dissipation sop-8l-ep 1650 mw t j operating junction temperature range -40 to +125 oc recommended oper ating conditions symbol parameter min max unit v in input voltage 2.5 5.5 v i out output current 0 600 ma t a operating ambient temperature -40 85 oc
ap7217c 1.25v 600ma cmos ldo ap7217c rev. 3 4 of 9 october 2009 ds31424 www.diodes.com ? diodes incorporated electrical characteristics (t a = 25 c, c in = 1 f, c out = 1 f, v en = v in , unless otherwise noted) symbol parameter test conditions min typ. max unit i q quiescent current i o = 0ma - 40 60 a i stb standby current v en = off v in = 5.0v 2 5 a output voltage accuracy i o = 30ma, v in = 5v 1.225 1.25 1.275 v v out v out temperature coefficient -40 c to 85 c, i out = 30ma 100 ppm / o c i out = 100ma, v out = 1.25v 1250 v dropout dropout voltage i out = 600ma, v out = 1.25v 2000 mv i out maximum output current v in = 5.3v 600 ma i limit current limit v in = 5.3v 750 ma i short short circuit current v in = 5.3v 70 ma ?v line / ? v in /v out line regulation 4.3v v in 5.5v; i out = 30ma 0.01 0.2 %/v ?v out load regulation 1ma i out 100ma, v in = 5.3v 10 20 mv psrr power supply rejection v in = 4.3v+ 0.5vp-pac, i out = 50ma f = 1khz 55 db v eh output on 1.6 v v el en input threshold output off 0.25 v i en enable pin current -0.1 0.1 a ja thermal resistance junction-to-ambient sop-8l-ep (note 3) 82 oc/w jc thermal resistance junction-to-case sop-8l-ep (note 3) 12 oc/w notes: 3. test condition for sop-8l-ep: device mounted on 2oz copper, minimum recommended pad layout on top & bottom layer with thermal vias, double sided fr-4 pcb.
ap7217c 1.25v 600ma cmos ldo ap7217c rev. 3 5 of 9 october 2009 ds31424 www.diodes.com ? diodes incorporated typical performance characteristics output current vs. dropout voltage (vout=1.25v) 0 500 1000 1500 2000 2500 100ma 200ma 300ma 400ma 500ma 600ma output current dropout voltage (m v input voltage vs. max iout (vout=1.25v) 0 100 200 300 400 500 600 700 800 2.5v 3v 4v 5v 5.5v input vol tag e max iout (m a quiescent current vs input voltage 25 30 35 40 45 50 55 2.5v 3v 4v 5v 5.5v input voltage quiescent current (ua) quiescent current vs. temperature 25 30 35 40 45 50 55 -40 0 25 85 100 120 temperature quiescent current (ua)
ap7217c 1.25v 600ma cmos ldo ap7217c rev. 3 6 of 9 october 2009 ds31424 www.diodes.com ? diodes incorporated typical performance characteristics (continued) load transient response (v out =1.25v) load transient response (v out =1.25v)
ap7217c 1.25v 600ma cmos ldo ap7217c rev. 3 7 of 9 october 2009 ds31424 www.diodes.com ? diodes incorporated application note input capacitor a 1 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 increased 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 ap7217c is designed to have excellent transient response for most applications with a small amount of output capacitance. the ap7217c is stable with any small ceramic output capacitors of 1.0 f or higher value, and the temperature coefficients of x7r or x5r type. additional capacitance helps to reduce 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 ap7217c (sop-8l-ep) is turned on by setting the en pin high, and is turned 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 . thermal considerations thermal shutdown protection limits power dissipation in ap7217c. when the operation junction temperature exceeds 140c, the over temperature protection circuit starts the thermal shutdown function and turns the pass element off. the pass element turn on again after the junction temperature cools by 30c. for continuous operation, do not exceed absolute maximum operation junction temperature 125c. the power dissipation definition in device is: p d = (v in ? v ou t) x i out + v in x i q the maximum power dissipation depends on the thermal resistance of ic package, pcb layout, the rate of surroundings airflow and temperature difference between junctions to ambient. the maximum power dissipation can be calculated by following formula: p d(max) = ( t j(max) - ta ) / ja where t j(max) is the maximum operation junction temperature 125c, t a is the ambient temperature and the ja is the junction to ambient thermal resistance. 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 750ma to prevent over-current and to protect the regulator from damage due to overheating. short circuit protection when v out pin is shorted to gnd or v out voltage is less than 200mv, short circuit protection will be triggered and clamp the output current to approximately 70ma. vin vout c co esr iin in ap7217c gnd iq out iout
ap7217c 1.25v 600ma cmos ldo ap7217c rev. 3 8 of 9 october 2009 ds31424 www.diodes.com ? diodes incorporated marking information (1) sop-8l-ep ( top view ) 7217c-13 yy ww x x logo part no. 5 8 4 1 e ww : week : 01~52; 52 yy : year : 08, 09,10~ g : green x : internal code represents 52 and 53 week sop-8l-ep 7217c-13 : for 1.25v package information (all dimensions in mm) (1) package type: sop-8l-ep 1.27typ 0.3/0.5 7~9 4.85/4.95 3.85/3.95 5.90/6.10 0.15/0.25 7~9 3.70/4.10 0.62/0.82 0/0.13 gauge plane 0.254 seating plane 0.35max. 45 detail "a" detail "a" 1.30/1.50 1.75max. bottom view 2.4ref. 3.3ref. exposed pad 8x-0.60 land pattem recommendation (unit:mm) exposed pad 1 1 1 5.4 8x-1.55 6x-1.27
ap7217c 1.25v 600ma cmos ldo ap7217c rev. 3 9 of 9 october 2009 ds31424 www.diodes.com ? diodes incorporated important notice diodes incorporated makes no warranty of any kind, express or implied, with regarding 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 reserve the right to make modifications, enhancements, improvements, corrections or ot her changes without further notice to this document and any product described herein. diodes incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does diodes incorpora ted convey any license under its patent or trademark rights, nor the rights of others. any customer or user of this document or pr oducts described 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 incorporated website, harmless against all damages. diodes incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthoriz ed sales channel. should customers purchase or use diodes incorporated products for any unintended or unauthorized application, customers shall indemnify and hold diodes incorporated and its representatives harmless against all claims, damages, expenses, and attorney fee s arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application. 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 specifically not authorized for use as critical components 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 properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result 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 expect ed 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 the safety and regulatory ramifications of their life support dev ices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of diodes incorporated products in such safety-critical, 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 representatives against any damages arising out of the use of diodes incorporated products in such safety-critical, life support devices or systems. copyright ? 2009, diodes incorporated www.diodes.com
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