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ap2161d/ap2171d 1a single channel current-limited power switch with output discharge ap2161d/2171d document number: ds32250 rev. 2 - 2 1 of 17 www.diodes.com september 2010 ? diodes incorporated new product description the ap2161d and ap2171d are integrated high-side power switches optimized for universal serial bus (usb) and other hot-swap applications. the family of devices complies with usb 2.0 and is available with both polarities of enable input. they offer current and thermal limiting and short circuit protection as well as controlled rise time and under-voltage lockout functionality. a 7ms deglitch capability on the open- drain flag output prevents false over-current reporting and does not require any external components. all devices are available in sot25, so-8, msop-8-ep, and dfn2018-6 packages. features ? single usb port power switches with output discharge ? over-current and thermal protection ? 1.5a accurate current limiting ? fast transient response ? reverse current blocking ? 90m ? on-resistance ? input voltage rang e: 2.7v ? 5.5v ? 0.6ms typical rise time ? very low shutdown current: 1ua (max) ? fault report (flg) with blanking time (7ms typ) ? esd protection: 4kv hbm, 300v mm ? active high (ap2171d) or active low (ap2161d) enable ? ambient temperature range -40oc to 85c ? sot25, so-8, msop-8-ep (exposed pad), and dfn2018-6: available in ?green? molding compound (no br, sb) ? lead free finish / rohs compliant (note 1) ? ul recognized, file number e322375 ? iec60950-1 cb scheme certified applications ? consumer electronics ? lcd tv & monitor, game machines ? communications ? set-top-box, gps, smartphone ? computing ? laptop, desktop, servers, printers, docking station, hub pin assignments so-8 ( top view ) 1 2 3 4 8 7 6 5 nc out flg out gnd en in in msop-8-ep 1 2 3 4 8 7 6 5 nc out flg out gnd en in in ( top view ) en out gnd in flg 1 2 3 5 4 sot25 ( top view ) flg en gnd out out in 1 3 2 4 5 6 dfn2018-6 ( top view ) notes: 1. eu directive 2002/95/ec (rohs). all applicab le rohs exemptions applied. please visit our website at http://www.diodes.com /products/lead_free.html .
ap2161d/ap2171d 1a single channel current-limited power switch with output discharge ap2161d/2171d document number: ds32250 rev. 2 - 2 2 of 17 www.diodes.com september 2010 ? diodes incorporated new product typical application circuit 0.1uf in gnd en out on 120uf power supply 2.7v to 5.5v 0.1uf off flg load 10k 10uf ap2171d enable active high available options part number channel enable pin (en) current limit (typical) recommended maximum continuous load current ap2161d 1 active low 1.5a 1a ap2171d 1 active high 1.5a 1a pin descriptions pin name pin number descriptions so-8 sot25 dfn2018-6 msop-8-ep gnd 1 2 1 ground in 2, 3 5 2 voltage input pin (all in pins must be tied together externally) en 4 4 3 enable input, active low (ap2161d) or active high (ap2171d) flg 5 3 4 over-current and over-temperature fault report; open-drain flag is active low when triggered out 6, 7 1 5, 6 voltage output pin (all out pins must be tied together externally) nc 8 n/a n/a no internal connection; recommend tie to out pins
ap2161d/ap2171d 1a single channel current-limited power switch with output discharge ap2161d/2171d document number: ds32250 rev. 2 - 2 3 of 17 www.diodes.com september 2010 ? diodes incorporated new product functional block diagram absolute maximum ratings symbol parameter ratings unit esd hbm human body model esd protection 4 kv esd mm machine model esd protection 300 v v in input voltage 6.5 v v out output voltage v in + 0.3 v v en , v flg enable voltage 6.5 v i load maximum continuous load current internal limited a t jmax maximum junction temperature 150 c t st storage temperature range (note 2) -65 to 150 c notes: 2. ul recognized rating from -30c to 70c (diodes qualified t st from -65c to 150c) recommended operating conditions symbol parameter min max unit v in input voltage 2.7 5.5 v i out output current 0 1.0 a t a operating ambient tem perature -40 85 c thermal sense flg out gnd in en uvlo current limit current sense deglitch discharge control driver
ap2161d/ap2171d 1a single channel current-limited power switch with output discharge ap2161d/2171d document number: ds32250 rev. 2 - 2 4 of 17 www.diodes.com september 2010 ? diodes incorporated new product electrical characteristics (t a = 25 o c, v in = +5.0v, unless otherwise stated) symbol parameter test conditions min typ. max unit v uvlo input uvlo 1.6 1.9 2.5 v i shdn input shutdown current disabled, i out = 0 0.5 1 a i q input quiescent current enabled, i out = 0 45 70 a i leak input leakage current disab led, out grounded 0.1 1 a i rev reverse leakage current disabled, v in = 0v, v out = 5v, i rev at v in 0.1 1 a r ds(on) switch on-resistance v in = 5v, i out = 1a t a = 25 c sot25, msop-8-ep, so-8 95 115 m dfn2018-6 90 110 -40 c ? t a ? 85 c 140 v in = 3.3v, i out = 1a t a = 25 c 120 140 -40 c ? t a ? 85 c 170 i short short-circuit current limit enabled into short circuit, c l =22 f 1.2 a i limit over-load current limit v in = 5v, v out = 4.0v, c l =120 f,-40 c ? t a ? 85c 1.1 1.5 1.9 a i trig current limiting trigger threshold output current slew rate (<100a/s) , c l =22 f 2.0 a v il en input logic low voltage v in = 2.7v to 5.5v 0.8 v v ih en input logic high voltage v in = 2.7v to 5.5v 2 v i sink en input leakage v en = 5v 1 a t d(on) output turn-on delay time c l =1 f, r load =10 0.05 ms t r output turn-on rise time c l =1 f, r load =10 0.6 1.5 ms t d(off) output turn-off delay time c l =1 f, r load =10 0.05 ms t f output turn-off fall time c l =1 f, r load =10 0.05 0.1 ms r flg flg output fet on-resistance i flg =10ma 20 40 t blank flg blanking time c in =10uf, c l =22 f 4 7 15 ms r dis discharge resistance (note 3) v in = 5v, disabled, i out = 1ma 100 t dis discharge time cl= 1f, vin = 5v, disabled to vout < 0.5v 0.6 ms t shdn thermal shutdown threshold enabled, r load =1k 140 c t hys thermal shutdown hysteresis 25 c ja thermal resistance junction-to- ambient sot25 (note 4) 170 o c/w so-8 (note 4) 127 msop-8-ep (note 5) 67 dfn2018-6 (note 5) 70 notes: 3. the discharge function is active when the device is disabled (when enable is de-asserted). the discharge function off ers a resistive discharge path for the external storage capacitor. 4. device mounted on fr-4 4 substrate pcb, 2oz copper, with minimum recommended pad layout. 5. device mounted on 2? x 2? fr-4 substrate pcb, 2oz copper , with minimum recommended pad on top layer and thermal vias to bot tom layer ground plane.
ap2161d/ap2171d 1a single channel current-limited power switch with output discharge ap2161d/2171d document number: ds32250 rev. 2 - 2 5 of 17 www.diodes.com september 2010 ? diodes incorporated new product typical performance characteristics 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 figure 1. voltage waveforms: ap2161d (left), ap2171d (right) all enable plots are for ap2171d active high turn-on delay and rise time 100us/div turn-off delay and fall time 100us/div turn-on delay and rise time 500us/div turn-off delay and fall time 500us/div vout 2v/div ven 5v/div c l =1uf t a =25c r l =10 ? vout 2v/div ven 5v/div c l =1uf t a =25c r l =10 ? vout 2v/div ven 5v/div c l =120uf t a =25c r l =10 ? vout 2v/div ven 5v/div c l =120uf t a =25c r l =10 ?
ap2161d/ap2171d 1a single channel current-limited power switch with output discharge ap2161d/2171d document number: ds32250 rev. 2 - 2 6 of 17 www.diodes.com september 2010 ? diodes incorporated new product typical performance characteristics (continued) short circuit current, device enabled into short 100us/div short circuit with blanking time and recovery 20ms/div 1 ? load connected to enabled device 1ms/div 2 ? load connected to enabled device 1ms/div power on 2ms/div power off 20ms/div iout 500ma/div ven 5v/div v in =5v t a =25c c l =22uf iout 1a/div vflag 2v/div v in =5v t a =25c c l =22uf iout 1a/div vflag 2v/div v in =5v t a =25c c l =22uf iout 1a/div vout 5v/div v in =5v t a =25c c l =22uf vflag 2v/div vout 5v/div vflag 5v/div t a =25c c l =120uf r l =10 ? iout 500ma/div ven 5v/div vout 5v/div vflag 5v/div iout 500ma/div ven 5v/div t a =25c c l =120uf r l =10 ?
ap2161d/ap2171d 1a single channel current-limited power switch with output discharge ap2161d/2171d document number: ds32250 rev. 2 - 2 7 of 17 www.diodes.com september 2010 ? diodes incorporated new product typical performance characteristics (continued) uvlo increasing 2ms/div uvlo decreasing 20ms/div discharge time no load resistance 100ms/div inrush current 1ms/div turn-on time vs input voltage 0 100 200 300 400 500 600 700 800 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 input voltage (v) turn-on time (us) turn-off time vs input voltage 28 28 29 29 30 30 31 31 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 input voltage (v) turn-off time (us) iout 500ma/div vin 2v/div vin 2v/div iout 500ma/div t a =25c c l =22uf r l =10 ? t a =25c c l =22uf r l =10 ? c l =1uf r l =10 ? t a =25c c l =1uf r l =10 ? t a =25c vout 2v/div ven 2v/div t a =25c v in =5v no load resistance c l =470uf c l =120uf c l =22uf iin 400ma/div ven 5v/div v in =5v t a =25c r l =10 ? c l =680uf c l =220uf c l =100uf
ap2161d/ap2171d 1a single channel current-limited power switch with output discharge ap2161d/2171d document number: ds32250 rev. 2 - 2 8 of 17 www.diodes.com september 2010 ? diodes incorporated new product typical performance characteristics (continued) rise time vs input voltage 0 100 200 300 400 500 600 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 input voltage (v) rise time (us) fall time vs input voltage 19 20 21 22 23 24 25 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 input voltage (v) fall time (us) supply current, output enabled vs ambient temperature 30 35 40 45 50 55 60 65 -60 -40 -20 0 20 40 60 80 100 ambient temperature (c) supply current, output enabled (ua) supply current, output disabled vs ambient temperature 0.00 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 -45 -25 -5 15 35 55 75 95 ambient temperature (c) supply current, output disabled (ua) static drain-source on-state resistance vs ambient temperature 100 110 120 130 140 150 160 170 180 190 200 -60 -40 -20 0 20 40 60 80 100 ambient temperature (c) static drain-source on-state resistance (m ? ) short-circuit output current vs ambient temperature 630 640 650 660 670 680 690 700 710 -60 -40 -20 0 20 40 60 80 100 ambient temperature (c) short-circuit output current (ma) c l =1uf r l =10 ? t a =25c c l =1uf r l =10 ? t a =25c vin=2.7v vin=5.0v vin=3.3v vin=5.5v vin=5.0v vin=5.5v vin=3.3v vin=2.7v vin=2.7v vin=3.3v vin=5v vin=2.7v vin=3.3v vin=5.0v vin=5.5v
ap2161d/ap2171d 1a single channel current-limited power switch with output discharge ap2161d/2171d document number: ds32250 rev. 2 - 2 9 of 17 www.diodes.com september 2010 ? diodes incorporated new product typical performance characteristics (continued) undervoltage lockout vs ambient temperature 1.95 1.96 1.97 1.98 1.99 2.00 2.01 2.02 2.03 2.04 2.05 -60 -40 -20 0 20 40 60 80 100 ambient temperature (c) undervoltage lockout (v) threshold trip current vs input voltage 1.10 1.11 1.12 1.13 1.14 1.15 2.8 3.3 3.8 4.3 4.8 5.3 input voltage (v) threshold trip current (a) uvlo falling uvlo rising t a =25c c l =22uf
ap2161d/ap2171d 1a single channel current-limited power switch with output discharge ap2161d/2171d document number: ds32250 rev. 2 - 2 10 of 17 www.diodes.com september 2010 ? diodes incorporated new product application note the ap2161d and ap2171d are integrated high-side power switches optimized for universal serial bus (usb) that require protection functi ons. the power switches are equipped with a driver that c ontrols the gate voltage and incorporates slew-rate limitation. this, along with the various protection features and special functions, makes these power switches ideal for hot-swap or hot-plug applications. protection features: under-voltage lockout (uvlo) under-voltage lockout function (uvlo) guarantees that the internal power switch is initially off during start-up. the uvlo functions only when the switch is enabled. even if the switch is enabled, the switch is not turned on until the power supply has reached at least 1.9v. whenever the input voltage falls below approximately 1.9v, the power switch is turned 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. over-current and short circuit protection an internal sensing fet is employed to check for over- current conditions. unlike cu rrent-sense resistors, sense fets do not increase the series resistance of the current path. when an over-current c ondition is detected, the device maintains a constant output current and reduces the output voltage accordi ngly. complete shutdown occurs only if the fault stays long enough to activate thermal limiting. the different overload conditions and the corresponding response of the ap2161d/2171d are outlined below: s.no conditions explanation behavior of the ap2161d/2171d 1 short circuit condition at start-up output is shorted before input voltage is applied or before the part is enabled the ic senses the short circuit and immediately clamps output current to a certain safe level namely i limit. 2 short-circuit or over- current condition short-circuit or overload condition that occurs when the part is enabled. ? at the instance the overlo ad occurs, higher current may flow for a very short period of time before the current limit function can react. ? after the current limit f unction has tripped (reached the over-current trip threshold), the device switches into current limiting mode and the current is clamped at i limit . 3 gradual increase from nominal operating current to i limit load increases gradually until the current-limit threshold.(i trig ) the current rises until i trig or thermal limit. once the threshold has been reached, the device switches into its current limiting mode and is set at i limit . note that when the output has been shorted to gnd at extremely low temperature (< -30 o c), a minimum 120- f electrolytic capacitor on the output pin is recommended. a correct capacitor type with capacitor voltage rating and temperature characteristics mu st be properly chosen so that capacitance value does not drop too low at the extremely low temperature operation. a recommended capacitor should have temperat ure characteristics of less than 10% variation of capaci tance change when operated at extremely low temp. our recommended aluminum electrolytic capacitor type is panasonic fc series. thermal protection thermal protection prevents the ic from damage when the die temperature exceeds safe margins. this mainly occurs when heavy-overload or short-circuit faults are present for extended periods of time. the ap2161d/ap2171d implements thermal sensing to monitor the operating junction temperature of the power distribution switch. once the die temperature rises to approximately 140c, the therma l protection feature gets activated as follows: the internal thermal sense circuitry turns the power switch off and the flg output is asserted thus preventing the powe r switch from damage. hysteresis in the thermal sense circuit allows the device to cool down to approximat ely 25c before the output is turned back on. the built-in thermal hysteresis feature avoids undesirable oscillation s of the thermal protection circuit. the switch continues to cycle in this manner until the load fault is removed, resulting in a pulsed output. the flg open-drain output is asserted when an over- current occurs with 7-ms deglitch.
ap2161d/ap2171d 1a single channel current-limited power switch with output discharge ap2161d/2171d document number: ds32250 rev. 2 - 2 11 of 17 www.diodes.com september 2010 ? diodes incorporated new product application note (continued) reverse current protection in a normal mosfet switch, current can flow in reverse direction (from the output side to the input side) when the output side voltage is higher than the input side, even when the switch is turned off. a reverse-current blocking feature is implemented in th e ap21x1 series to prevent such back currents. this circuit is activated by the difference between the output voltage and the input voltage. when the switch is disabled, this feature blocks reverse current flow from the output back to the input. special functions: discharge function when enable is de-asserted, the discharge function is active. the output capacitor is discharged through an internal nmos that has a discharge resistance of 100 ? . hence, the output vo ltage drops down to zero. the time taken for discharge is dependent on the rc time constant of the resistance and the output capacitor. flg response the flg open-drain output goes active low for any of the two conditions: over-current or over-temperature. the time from when a fault condition is encountered to when the flg output goes low is 7 -ms (typ). the flg output remains low until both over-c urrent and over-temperature conditions are removed. connecting a heavy capacitive load to the output of the device can cause a momentary over-current condition, which does not trigger the flg due to the 7-ms deglitch timeout. the 7-ms timeout is also applicable for over-current recovery and thermal recovery. the ap2161d/ap2171d are designed to eliminate erroneous over-current reporting without the need for external components, such as an rc delay network. applications information: power supply considerations a 0.01- f to 0.1- f x7r or x5r ceramic bypass capacitor between in and gnd, close to the device, is recommended. this limits the input voltage drop during line transients. placing a high-v alue electrolytic capacitor on the input (10- f minimum) and output pin(s) is recommended when the output load is heavy. this precaution also 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. this capacitor al so prevents output from going negative during turn-off due to inductive parasitics. 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 the junction temperature can be calculated by t j = p d x r t ja + t a where: ta= ambient temperature qc r t ja = thermal resistance pd = total power dissipation generic hot-plug applications in many applications it may be necessary to remove modules or pc boards while the main unit is still operating. these are consid ered hot-plug applications. such implementations require the control of current surges as seen by the main power supply and the card being inserted. the most effe ctive way to control these surges is to limit and slowly ramp up the current and voltage being applied to the card, similar to the way in which a power supply normally turns on. due to the controlled rise and fall times of the ap2161d/ap2171d, these devices can be used to provide a softer start-up to devices being hot-plugged into a powered system. the uvlo feature of the ap2161d /ap2171d also ensures that the switch is off afte r the card has been removed, and that the switch is off dur ing the next insertion. by placing the ap2161d/ap2171d between the v cc input and the rest of the circuitr y, the input power reaches these devices first after insertion. the typical rise time of the switch is approximately 1m s, providing a slow voltage ramp at the output of the device. this implementation controls the system surge current and provides a hot-plugging mechanism for any device.
ap2161d/ap2171d 1a single channel current-limited power switch with output discharge ap2161d/2171d document number: ds32250 rev. 2 - 2 12 of 17 www.diodes.com september 2010 ? diodes incorporated new product ordering information ap 21 x 1 d xx g - x 6 : active low 7 : active high g : green 7/13 : tape & reel 1 : 1 channel channel green package enable packing w : sot25 s : so-8 mp : msop-8-ep fm : dfn2018-6 device package code packaging (note 6) 7?/13? tape and reel quantity part number suffix ap21x1dsg-13 s so-8 2500/tape & reel -13 ap21x1dmpg-13 mp msop-8-ep 2500/tape & reel -13 ap21x1dwg-7 w sot25 3000/tape & reel -7 ap21x1dfmg-7 fm dfn2018-6 3000/tape & reel -7 notes: 6. pad layout as shown on diodes inc. suggested pad la yout document ap02001, which can be found on our website at http://www.diodes.c om/datasheets/ap02001.pdf. marking information (1) so-8 ap21x x d ( top view ) yy ww x x part number logo ww : week : 01~52; 52 yy : year : 08, 09,10~ g : green x : internal code 8765 1 2 34 6 : active low 7 : active high 1 : 1 channel represents 52 and 53 week
ap2161d/ap2171d 1a single channel current-limited power switch with output discharge ap2161d/2171d document number: ds32250 rev. 2 - 2 13 of 17 www.diodes.com september 2010 ? diodes incorporated new product marking information (continued) (2) msop-8-ep ap21x x d ( top view ) y w x e part number logo 87 65 1 234 6 : active low 7 : active high y : year : 0~9 a~z : green 1 : 1 channel a~z : 27~52 week; z represents w : week : a~z : 1~26 week; 52 and 53 week msop-8-ep (3) sot25 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 (4) dfn2018-6 y : year : 0~9 (top view) x : a~z : green y w x xx xx : identification code w : week : a~z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week device package type identification code ap2161dw sot25 jc ap2171dw sot25 jd device package type identification code ap2161dfm dfn2018-6 jc ap2171dfm dfn2018-6 jd
ap2161d/ap2171d 1a single channel current-limited power switch with output discharge ap2161d/2171d document number: ds32250 rev. 2 - 2 14 of 17 www.diodes.com september 2010 ? diodes incorporated new product package outline dimensions (all dimensions in mm) (1) package type: so-8 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 0.62/0.82 0.10/0.20 gauge plane 0.254 seating plane 0.35max. 45 detail "a" detail "a" 1.30/1.50 1.75max. land pattern recommendation (unit: mm) 6x-1.27 8x-1.55 8x-0.60 5.4 0/8 (2) package type: msop-8-ep 2.9/3.1 0.75/0.95 2.9/3.1 4.7/5.1 0.65bsc. 0.22/0.38 0.05 0.4/0.8 0.25 0.95ref. gauge plane 0 / 8 "a" detail "a" 1.35/1.65 1.65/1.95 exposed pad (bottom) 8x-0.45 8x-1.4 6x-0.65 exposed pad (bottom) 1 1 1 land pattern recommendation (unit:mm) 4.4 1.10max. 0.15typ. 0.05/0.15
ap2161d/ap2171d 1a single channel current-limited power switch with output discharge ap2161d/2171d document number: ds32250 rev. 2 - 2 15 of 17 www.diodes.com september 2010 ? diodes incorporated new product package outline dimensions (continued) (3) package type: sot25 (4) package type: dfn2018-6 bottom view side view 1.75/1.875 1.3/1.5 1.95/2.075 0.50typ 0.15/0.25 0.9/1.1 0.47/0.53 0/0.05 0.13typ 6x- 0.10 c 0.08 c c seating plane a b 2x- 0.25 b 0.25 a 0.10 cab 2x- pin #1 id 0.2/0.3 c l c l c l c l 4x-0.50 0.20 1.20 1.600 6x-0.25 6x-0.35 top view land pattern recommendation (unit:mm) pin #1
ap2161d/ap2171d 1a single channel current-limited power switch with output discharge ap2161d/2171d document number: ds32250 rev. 2 - 2 16 of 17 www.diodes.com september 2010 ? diodes incorporated new product taping orientation (note 7) for dfn2018-6 notes: 7. the taping orientation of the other package type can be found on our website at http://www.diodes .com/datasheets/a p02007.pdf
ap2161d/ap2171d 1a single channel current-limited power switch with output discharge ap2161d/2171d document number: ds32250 rev. 2 - 2 17 of 17 www.diodes.com september 2010 ? diodes incorporated new product 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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