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ap22802 document number: ds36218 rev. 2 - 2 1 of 14 www.diodes.com june 2014 ? diodes incorporated ap22802 965010 advanced information single channel power distribution load switch description the ap22802 is a single channel current - limited integrated high - side power switch optimized for universal serial bus (usb) and other hot - sw ap applications. the family of devices complies with usb standards and is available with both polarities of enable input. the device has fast short - circuit response time for improved overall system robustness, and has an integrated output discharge function to ensure completely controlled discharging of the output voltage capacitor. they provide a complete protection solution for applications subject to heavy capacitive loads and the prospect of short circuit, and offer reverse curre nt blocking, over - current, over - temperature and short - circuit protection, as well as controlled rise time and under - voltage lockout functionality. a 6 ms deglitch capability on the open - drain flag output prevents false over - current reporting and does not require any external components. the ap22802 is available in a standard green sot25 and rohs compliant. features ? integrated single channel load switch ? protection ? over current with auto recovery ? short circuit with auto recovery ? over temperature with auto recovery ? small form factor package s sot25 C footprint of just 9 mm 2 ? th ermally efficient low profile package ? totally lead - free & fully rohs compliant (notes 1 & 2) ? halogen and antimony free. green device (note 3) ? ul recognized, file number e322375 ? iec60950 - 1 cb scheme certified pin assignments applications ? integrated load s witches in ultrabook pcs ? powe r up/down sequencing in ultrabook pcs ? notebook ? netbook ? set - top boxes ? ssd (solid state drives) ? consumer electronics ? tablet pc ? telecom systems note s: 1 . no purposely added lead. fully eu directive 2002/95/ec (rohs) & 2011/65/eu (rohs 2) compliant. 2. see http://www.diodes.com/quality/lead_free.html for more information about diodes incorporateds definitions of hal ogen - and antimony - free, "green" and lead - f ree . 3. halogen - and antimony - free "green products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total br + cl) and <1000ppm antimony compounds. typical applications circuit 1 u f i n g n d e n o u t o n 1 2 0 u f p o w e r s u p p l y 2 . 7 v t o 5 . 5 v 0 . 1 u f o f f f l g l o a d 1 0 k e n a b l e a c t i v e h i g h s o t 2 5 t o p v i e w 5 3 2 1 4 e n i n o u t g n d f l g
ap22802 document number: ds36218 rev. 2 - 2 2 of 14 www.diodes.com june 2014 ? diodes incorporated ap22802 965010 advanced information pin description s p in number pin name function 1 out voltage o utput p in 2 gnd ground p in of the c ircuitry 3 flg over c urrent and over temperature fault report ; open - d rain flag is active low when triggered. 4 en enable input . ap22802a: active h igh ap22802b: active l ow 5 in voltage i nput p in functional block diagram absolute maximum ratings (@ t a = +25c, unless otherwise specified.) (note 4 ) symbol parameter ratings units esd hbm human body esd protection 2000 v esd mm machine model esd protection 200 v v in input voltage - 0.3 to 5.7 v v out output voltage - 0.3 to (v in +0.3) v v en enable voltage - 0.3 to (v in +0.3) v i l load current internal limited a t j(max) maximum junction temperature 150 c t st storage temperature - 65 to +150 c r ja thermal resistance, junction to ambient sot25 240 c /w r cc thermal resistance, junction to case sot25 130 c /w note: 4. stresses greater than the 'absolute maximum ratings' specified above may cause permanent damage to the device. these are stre ss ratings only; functional operation of the device at these or any other conditions exceeding those indicated in this specification is not implied. device reliability may be affected by exposure to absolute maximum rating conditions for extended periods of time. thermal sense flg out gnd in en uvlo current limit current sense deglitch discharge control driver
ap22802 document number: ds36218 rev. 2 - 2 3 of 14 www.diodes.com june 2014 ? diodes incorporated ap22802 965010 advanced information recommended operating conditions (note 5) symbol parameter min max unit v in input voltage 2.7 5.5 v i out output current 0 2 a v il en input logic low voltage 0 0.5 v v ih en input logic high voltage 1.5 v in v t a operating ambient temperature - 40 +85 ? electrical characteristics ( vin=5v @ t a = +25c, c in = 1f , c l = 100nf , unless otherwise specified.) symbol parameter test conditions min t yp max unit v uvlo input uvlo v in rising 1.6 2.0 2.4 v v uvlo input uvlo hysteresis v in decreasing 75 mv i shdn input shutdown current disabled, out = open 0.1 1 a i q input quiescent current enabled , out = open 50 a i leak input leakage current disabled, out grounded 0.1 1 a i rev reverse leakage current disabled, v in = 0v, v out = 5v, i rev at v in 0.01 1 a r ds(on) switch o n - r esistance v in = 5v, i out = 2.0a t a = +25 c 50 m v in = 3.3v, i out = 2.0a t a = +25 c 60 i limit over load current limit (note 6) v in = 5v, v out = 4.5v 2 . 2 2.7 3.2 a i short short - circuit current limit enabled into short circuit 1.65 a t short short - c ircuit response time v in = 5 v, no load figure 1 0.7 s v il en input logic low voltage v in = 2.7v to 5.5v 0.5 v v ih en input logic high voltage v in = 2.7v to 5.5v 1.5 v i leak - en en input l eakage v in = 5v, v en = 0v and 5.5v 0.01 1 a i leak - o output l eakage c urrent disabled, v out = 0v 0.5 1 a t d(on) output t urn - o n d elay t ime c l = 4.7 f, r load = 10 @ v in = 3.3 v figure 2 1. 7 ms t r output t urn - o n r ise t ime c l = 4.7 f, r load = 10 @ v in = 3.3 v figure 2 1.0 2.1 3 .5 ms t d(off) output t urn - o ff d elay t ime c l = 4.7 f, r load = 10 @ v in = 3.3 v figure 2 0.2 ms t f output t urn - o ff f all t ime c l = 4.7 f, r load = 100 @ v in = 3.3 v figure 2 0.65 ms r flg flg output fet o n - r esistance i flg = 1 0 ma 40 60 i foh flg off current v flg = 5v 0.01 1 a t blank flg b lanking t ime assertion or deassertion due to overcurrent and over - temperature condition 2 6 1 3 ms t dis discharge t ime c l = 1 f, v in = 5v, disabled to v out < 0.5v 0.4 ms r dis discharge r esistance v in = 5v, disabled, i out = 1ma 90 t shdn thermal shutdown threshold enabled 140 ? c t hys thermal shutdown hysteresis 15 ? c note : 5 . refer to the typical application circuit
ap22802 document number: ds36218 rev. 2 - 2 4 of 14 www.diodes.com june 2014 ? diodes incorporated ap22802 965010 advanced information typical performance characteristics figure 1 response time to short circuit waveform figure 2 voltage waveforms: ap2 2802 (left), ap 22802 (right) v en 90 % v out t d ( on ) 10 % t d ( off ) 50 % 50 % t r 10 % 90 % t f v en 90 % v out t d ( on ) 10 % t d ( off ) 50 % 50 % t r 10 % 90 % t f
ap22802 document number: ds36218 rev. 2 - 2 5 of 14 www.diodes.com june 2014 ? diodes incorporated ap22802 965010 advanced information typical performance characteristics ( cont.) ( t a = +25c, v in = 5v, c in = 1 f, c l = 0. 1 f , unless otherwise specified.) turn on delay and rise time turn off delay and fall time turn - on delay and rise time turn - off delay and fall time device enabled into short - circuit inrush current v out 2 v/div v out 5 v/div v out 5 v/div v out 2 v/div en 5 v/div en 5 v/div en 5 v/div en 5 v/div en 5 v/div en 5 v/div i in 200ma /div i in 2a /div i in 2a /div i in 200ma /div i out 1a /div i in 1a /div 1ms /div 1ms /div 400 s /div 400 s /div 1ms /div 1ms /div v in =5v out grounded v in =5v r load = 2.5 c l = 2 20 f c l = 47 0 f c l = 1 20 f c l = 1 f v in =5 v r load = 2.5 c l = 120 f v in =5v r load = 2.5 c l = 120 f v in = 3.3 v r load = 10 c l = 4.7 f v in = 3.3 v r load = 10 c l = 4.7 f
ap22802 document number: ds36218 rev. 2 - 2 6 of 14 www.diodes.com june 2014 ? diodes incorporated ap22802 965010 advanced information typical performance characteristics ( cont.) ( t a = +25c, v in = 5v, c in = 1 f , c l = 0. 1 f , unless otherwise specified.) full - load to short - circuit transient response short - circuit to full - load recovery response no - load to short - circuit transient response short - circuit to no - load recovery response power on short - circuit with blanking time and recovery v in 5 v/div flg 5 v/div v out 5 v/div i out 1a /div v in =5v r load = 2.5 c l = 120 f flg 5 v/div 1ms /div 10ms /div v out 5 v/div i out 2a /div v in =5v no load c l = 120 f 2ms /div 10ms /div 2ms /div 10ms /div v out 2 v/div v out 2 v/div i in 2a /div i in 2a /div flg 5 v/div flg 5 v/div v out 2 v/div v out 2 v/div i in 2a /div i in 2a /div flg 5 v/div flg 5 v/div v in =5v r load = 2.5 c l = 120 f output short circuited device turns off and re - enables into short - circuit current limit v in =5v r load = 2.5 c l = 120 f output short circuit removed short circuit present and device thermal cycles v in =5v no load c l = 120 f v in =5v no load c l = 120 f output short circuited output short circuit removed device enters short - circuit current limit short circuit present and device thermal cycles
ap22802 document number: ds36218 rev. 2 - 2 7 of 14 www.diodes.com june 2014 ? diodes incorporated ap22802 965010 advanced information typical performance characteristics ( cont.) ( t a = +25c, v in = 5v, c in = 1 f , c l = 0. 1 f , unless otherwise specified.) uvlo increasing uvlo decreasing v in =5v r load = 2.5 c l = 120 f v in =5v r load = 2.5 c l = 120 f v in 2v/div v in 2v/div v out 2v/div v out 2v/div 1ms /div 1ms /div
ap22802 document number: ds36218 rev. 2 - 2 8 of 14 www.diodes.com june 2014 ? diodes incorporated ap22802 965010 advanced information typical performance characteristics ( cont.) ( t a = +25c, v in = 5v, c in = 1 f , c l = 0. 1 f , unless otherwise specified.) turn - on time vs . input voltage turn - off time vs . input voltage rise time vs . input voltage fall time vs . input voltage 0 300 600 900 1200 1500 1800 2100 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 turn - on time( s) input voltage(v) 0 200 400 600 800 1000 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 turn - off time( s) input voltage(v) 1000 1500 2000 2500 3000 3500 4000 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 rise time( s) input voltage(v) 0 200 400 600 800 1000 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 fall time( s) input voltage(v) c l =4.7 f r l oad =10 c l =4.7 f r l oad =10 0 c l =4.7 f r l oad =10 c l =4.7 f r l oad =10
ap22802 document number: ds36218 rev. 2 - 2 9 of 14 www.diodes.com june 2014 ? diodes incorporated ap22802 965010 advanced information typical performance characteristics ( cont.) ( t a = +25c, v in = 5v, c in = 1 f , c l = 0. 1 f , unless otherwise specified.) supply current vs . temperature (output enabled) supply current vs . temperature (output disabled) r ds(on) vs . temperature short - circuit output current vs . temperature 0 10 20 30 40 50 60 70 80 - 50 - 25 0 25 50 75 100 125 supply current output enabled(ua) temperature( ) - 1.0 - 0.5 0.0 0.5 1.0 - 50 - 25 0 25 50 75 100 125 supply current output disabled(ua) temperature( ) 0 20 40 60 80 100 - 50 - 25 0 25 50 75 100 125 r ds(on) (m ) temperature( ) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 - 50 - 25 0 25 50 75 100 125 short - circuit output current (a) temperature( c) 3.3 2.7 5v 5.5 v in = 2.7 v v in = 3.3 v v in = 5 v v in = 5.5 v v in = 2.7 v v in = 5 v v in =5.5v v in =3.3v v in =5.5v v in = 5 v v in = 2.7 v v in =3.3v
ap22802 document number: ds36218 rev. 2 - 2 10 of 14 www.diodes.com june 2014 ? diodes incorporated ap22802 965010 advanced information typical performance characteristics ( cont.) ( t a = +25c, v in = 5v, c in = 1 f , c l = 0. 1 f , unless otherwise specified.) under voltage lockout vs . temperature over load current limit vs . input voltage 1.6 1.7 1.8 1.9 2.0 2.1 2.2 - 50 - 25 0 25 50 75 100 125 undervoltage lockout(v) temperature( ) 2.2 2.4 2.6 2.8 3.0 3.2 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 over load current limit (a) input voltage(v) uvlo rising uvlo fall ing uvlo rising
ap22802 document number: ds36218 rev. 2 - 2 11 of 14 www.diodes.com june 2014 ? diodes incorporated ap22802 965010 advanced information application information power supply considerations a 1 - f x7r or x5r ceramic bypass capacitor between in and gnd, close to the device, is recommended. placing a high - value capacitor (10 - f minimum) on both input and output pin s is recommended when the output transient load is heavy. this precaution reduces power - supply transients that may cause ringing on the input. additionally, bypassing the output with a 0.01 - f to 0.1 - f ceramic capacitor improves the immunity of the device to short - circuit transients. flg response when an over - current or over - temperatu re shutdown condition is encountered, the flg open - drain output goes active low after a nominal 6 - ms deglitch timeout. the flg output remains low until both over - current and over - temperature conditions are removed. connecting a heavy capacitive load to th e output of the device can cause a momentary over - current condition, which does not trigger the flg due to the 6 - ms deglitch timeout. the ap2 2802 is designed to eliminate false over - current reporting without the need of external components to remove unwant ed pulses. over - c urrent and short circuit protection an internal sensing fet is employed to check for over - current conditions. unlike current - sense resistors, sense fets do not increase the series resistance of the current path. when an overcurrent condition is detected, the device maintains a constant output current and reduces the output voltage accordingly. complete shutdown occurs only if the fault stays long enough to activate thermal limiting. three possible overload conditions can occur. in the first condition, the output has been shorted to gnd before the device is enabled or before vin has been applied. the ap2 2802 senses the short circuit and immediately clamps output current to a certain safe level. i n the second condition, an output sho rt or an overload occurs while the device is enabled. at the instance the overload occurs, higher current may flow for a very short period of time before the current limit function can react. after the current limit function has tr ipped, the device switch es into current limiting mode and the current is clamped at i limit , or i short . in the third condition, the load has been gradually increased beyond the recommended operating current. the current is permit ted to rise until the current - limit threshold (i trig ) is reached or until the thermal limit of the device is exceeded. the ap2 2802 is capable of delivering current up to the current - limit threshold without damaging the device. once the threshold has been reached, the device switches into its current lim iting mode and is set at i limit . thermal protection thermal protection prevents the ic from damage when heavy - overload or short - circuit faults are present for extended periods of time. the ap2 2802 implements a thermal sensing to monitor the operating junc tion temperature of the power distribution switch. once the die temperature rises to approximately 140c due to excessive power dissipation in an over - current or short - circuit condition the internal thermal sense circuitry turns the power switch off, thus preventing the power switch from damage. hysteresis is built into the thermal sense circuit allowing the device to cool down approximately 1 5c before the switch turns back on. the switch continues to cycle in this manner until the load fault or input powe r is removed. the flg open - drain output is asserted when an over - temperature shutdown or over - current occurs with 6 - ms deglitch. on/off input operator the en input allows the output current to be switched on and off using a gpio compatible input. the high signal (switch on) should be at least 1 .5 v, and the low signal (switch off) no higher than 0.5v. this pin should not be left floating. it is advisable to hold the en signal low when applying or removing power. under - voltage lockout (uvlo ) under - voltage lockout function (uvlo) keeps the internal power switch from being turned on until the power supply has reached at le ast 2 v, even if the switch is enabled. whenever the input voltage falls below approximately 2 v, the power switch is quickly t urned off. this facilitates the design of hot - insertion systems where it is not possible to turn off the power switch before input power is removed. discharge function the discharge function of the device is active when enable is disabled or de - asserted. the discharge function with the n - mos power switch implementation is activated and offers a resistive discharge path for the external storage capacitor. this is designed for discharging any residue of the output voltage when either no external output resistance or load resistance is present at the output.
ap22802 document number: ds36218 rev. 2 - 2 12 of 14 www.diodes.com june 2014 ? diodes incorporated ap22802 965010 advanced information application information (cont.) power dissipation and junction temperature the low on - resistance of the internal mosfet allows the small surface - mount packages to pass large current. using the maximum operating ambient temperature (t a ) and r ds( on ) , the power dissipation can be calculated by: p d = r ds( on ) i 2 finally, calculate the junction temperature: t j = p d x r ? ja + t a where: t a = ambient temperature c r ? ja = thermal resistance p d = total power dissipation o rdering information part number package code packaging 13 tape and reel ap22802 a w5 - 7 w5 sot25 3000 /tape & reel - 7 ap22802 b w5 - 7 w5 sot25 3000 /tape & reel - 7 marking information part number package t ype identification code ap22802a w5 - 7 sot25 xa ap22802b w5 - 7 sot25 xb 1 2 3 5 7 4 xx y w x xx : identification code w : week : a ~ z : 1 ~ 26 week ; x : a ~ z : green ( top view ) y : year 0 ~ 9 a ~ z : 27 ~ 52 week ; z represents 52 and 53 week a p 2 2 8 0 2 x x x - 7 p a c k i n g p a c k a g e w 5 : s o t 2 5 - 7 : t a p e & r e e l e n a b l e a : a c t i v e h i g h b : a c t i v e l o w
ap22802 document number: ds36218 rev. 2 - 2 13 of 14 www.diodes.com june 2014 ? diodes incorporated ap22802 965010 advanced information package outline dimensions (all d imensions in mm . ) please see ap02002 at http://w ww.diodes.com/datasheets/ap02002 .pdf for the latest version. suggested pad layout please see ap02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version sot25 dim min max typ a 0.35 0.50 0.38 b 1.50 1.70 1.60 c 2.70 3.00 2.80 d ? ? ? ? h 2.90 3.10 3.00 j 0.013 0.10 0.05 k 1.00 1.30 1.10 l 0.35 0.55 0.40 m 0.10 0.20 0.15 n 0.70 0.80 0.75 ? ? ? ? all dimensions in mm dimensions value (in mm) z 3.20 g 1.60 x 0.55 y 0.80 c1 2.40 c2 0.95 x z y c1 c2 c2 g a m j l d b c h k n
ap22802 document number: ds36218 rev. 2 - 2 14 of 14 www.diodes.com june 2014 ? diodes incorporated ap22802 965010 advanced information 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 reserve the right to make modifications, enhancements, improvements, corrections or other 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 incorporated convey any license unde r its patent or trademark rights, nor the rights of others. any customer or user of t his document or products 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 diod es incorporated website, harmless against all damages. diodes incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthor ized 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 fees arising ou t 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 nam es and markings noted herein may also be covered by one or more united states, international or fore ign trademarks. this document is written in english but may be translated into multiple languages for reference. only the english version of this document is the final and determinative format released by diodes incorporated. life support diodes incorporated products are specifically not authorized for use as critical components in life support devices or systems witho ut the express written approval of the chief executive officer of diodes incorporated. as used herein: a. life support devices o r 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 i n the labeling can be reasonably expec ted 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 expe cted 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 d evices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory a nd 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 di odes 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 ? 2014, diodes incorporated www.diodes.com

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