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API9221 c a r/wall or usb supply input lithium battery charger with ovp usb bypass and 10ma ldo API9221 document number: ds32204 rev. 2 - 2 1 of 15 www.diodes.com november 2011 ? diodes incorporated new product description the API9221 has two supply inputs for highly integrated portable applications, enabling charging from a usb host, wall adapter, or car adapter. the ppr pin indicates to a host controller that a safe and valid supply is connected to either vusb or vdc. the higher charge current option from vdc will take priority if both supplies are connected. the hos t controller can control the state of charging via the enable pin en . the API9221 implements the constant curr ent/constant voltage (cc/cv) charge algorithm for lithium based battery cells. the connected cell will be charged to 4.2v with an accuracy of 1% over the entire temperature range. the termination current is programmable via an external resistor, r imin . the chg pin indicates when the termination current is reached, and is reset by en , power off, or battery below 3.9v. the maximum charge current can be programmed independently via the resistors r iusb and r ivdc . the API9221 comes with several protection features. to prevent system damage, the vusb pin uses over voltage protection (ovp) at 5.4v, a nd the vdc ovp is at 6.9v. above these levels, the non-oper ating device is protected against damage up to 28v. for control and system start-up the API9221 has a current li mited linear regulator. to protect the chip against excessive power dissipation, temperature monitoring is integrated, which folds back the current to a safe level. as t he temperature rises, this fold- back begins at 125c without completely interrupting charging. applications ? handheld consumer devices ? cell phones, pdas, mp3 players ? handheld test equipment ? digital still cameras ? multimedia players pin assignments features ? linear lithium ion / lithium polymer charging ic ? supplied from usb host or car/wall adapter ? overvoltage protection usb: 5.4v, wall:6.9v ? supply inputs safe up to 28v ? fast charging with maximum current of 1.2a ? integrated linear regulator of 4.9v at 10ma with current limit ? separate resistor-programmable charging current for wall and usb ? resistor programmable end-of-charge ? current limit on usb bypass path ? indicator pins for charging and power present ? enable pin to enable host control charging ? reverse current protection ? thermal protection ? u-dfn4030-12: available in ?green? molding compound (no br, sb) ? lead free finish/ rohs compliant (note 1) note: 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 . typical application circuit API9221 on off vdc_ldo en ppr chg bat gnd usb_byp imin iusb ivdc to battery to mcu r imin r iusb r ivdc usb_byp ldo output vdc vusb usb input dc input i/o_vdd i/o_vdd vdc vusb ppr chg en imin vdc_ldo bat usb_byp ivdc gnd iusb (top view) u-dfn4030-12 1 2 3 4 5 6 12 11 10 9 8 7 exposed pad
API9221 c a r/wall or usb supply input lithium battery charger with ovp usb bypass and 10ma ldo API9221 document number: ds32204 rev. 2 - 2 2 of 15 www.diodes.com november 2011 ? diodes incorporated new product pin descriptions name pin # descriptions vdc 1 input pin from a wall ac/dc or car adapter the recommended input to this pin is 4.5v to 6.7v with a maximum safe value of 28v. if a sufficient voltage is detected on vdc, no charge current is taken from the vusb pin. internal ovp trips at 6. 9v. the input current can be programmed with a resistor at ivdc (pin 9). decoupling with a 1 f ceramic capacitor is recommended. vusb 2 usb host device input the recommended input to this pin is 4.5v to 5.3v with a maximum safe value of 28v. internal ovp trips at 5.4v. the suppl y current drawn at this pin is the sum of the charge current and the usb_ byp current. decoupling with a 1 f ceramic capacitor is recommended. special att ention has to be given to the maximum capacitance on the usb connection. refer to the usb standard. ppr 3 power present signal output, active-low the power present pin can indicate to a host processor that an external source is present and that current can be derived fr om the input. this is an open drain output pin, which goes low when a valid source voltage is connected to either vusb or vdc. if connected to a processor i/o a pull up resistor should be utilized. alternatively this pin can be used to drive an indicator led up to 10ma. chg 4 charge indicator output, active-low open drain pin is pulled low when charging is performed. goes high when charge current reaches imin. remains hi gh (including top-up), until the battery voltage falls below 3.9v or the device is power cycled or en is cycled. if connected to a processor i/o a pull up resistor should be utilized. alternatively this pin can be used to drive an indicator led up to 10ma. en 5 charge enable input, active-low logic level input pin to control charging from an external processor. an internal 600k ? (nominally) pull-down resistor is provided, this pin normally requires a pull up resistor when connected to a processor i/o. imin 6 current setting for end-of-charge state the end-of-charge current is set by a resi stor connected from this pin to gnd. this applies to charging from either vdc or vusb. iusb 7 current setting, usb power the usb input maximum charging current is set by a resistor connected from this pin to gnd. this current is also limit ed by a thermally controlled current fold- back circuit. gnd 8 ground ground return path. ivdc 9 current setting, wall or car adapter vdc input maximum charging current is set by a resistor connected from this pin to gnd. this current is also limited by a thermally controlled current fold-back circuit. usb_byp 10 usb bypass output provides an external load path from the u sb input, with current limiting. protected against reverse current. bat 11 battery connector connect this pin to the positive terminal of the battery. this pin is also used to monitor the charge state of the battery. it is not recommended to operate the part without a battery connected to this pin. protected against reverse current. vdc_ldo 12 ldo output low current linear regulator for system supply, available when a valid vdc input supply is used. stabilize with a 0.1 f to 1 f ceramic capacitor to ground. protected against reverse current.
API9221 c a r/wall or usb supply input lithium battery charger with ovp usb bypass and 10ma ldo API9221 document number: ds32204 rev. 2 - 2 3 of 15 www.diodes.com november 2011 ? diodes incorporated new product functional block diagram
API9221 c a r/wall or usb supply input lithium battery charger with ovp usb bypass and 10ma ldo API9221 document number: ds32204 rev. 2 - 2 4 of 15 www.diodes.com november 2011 ? diodes incorporated new product absolute maximum ratings symbol parameter rating unit vdc, vusb to gnd -0.3 to 28v v en , imin, ivdc, iusb, bat -0.3 to 7v v usb_byp, vdc_ldo -0.3 to 7v v chg , ppr -0.3 to 7v v esd susceptibility (note 2) hbm human body model 2 kv mm machine model 200 v thermal resistance (note 3) symbol parameter rating unit ja junction to ambient 41 c/w jc junction to case 3.5 recommended operating conditions (note 4) symbol parameter rating unit ambient temperature range -40 to +85 c vusb supply voltage (vusb) 4.5 to 5.3 v vdc supply voltage (vdc) 4.5 to 6.7 v i vdc_chrg typical adapter charge current 0.1 to 1.2 a i usb_chrg typical usb charge current 46.5 to 465 ma i usb-byp typical usb bypass current 0 to 200 ma i ldo typical ldo current 0 to 10 ma notes: 2. semiconductor devices are esd sensitive and may be damaged by exposure to esd events. suitable esd precautions should be taken when handling and transporting this device. 3. test condition for u-dfn4030-12: measured on approximately 1? square of 1 oz copper. 4. the device function is not guaranteed outside of the recommended operating conditions.
API9221 c a r/wall or usb supply input lithium battery charger with ovp usb bypass and 10ma ldo API9221 document number: ds32204 rev. 2 - 2 5 of 15 www.diodes.com november 2011 ? diodes incorporated new product electrical characteristics API9221 is tested at vdc = vusb = 5v at an ambient temperature of +25c unless otherwise noted. symbol parameter test conditions min typ. max unit charger power-on thresholds vpo r rising vusb/vdc threshold 3.4 3.9 4.2 v vpo f falling vusb/vdc threshold 3.2 3.7 4.0 v input voltage offset vos hc rising vdc or vusb, relative to v bat v bat = 4.0v, use chg pin to indicate the comparator output - 150 250 mv vos lc falling vdc or vusb, relative to v bat v bat = 4.0v, use chg pin to indicate the comparator output 20 80 - mv standby current i standby bat pin sink current en = high or both inputs are floating - 0.05 0.5 a i vdc vdc pin supply current en = high, i ldo = 0 - 380 460 a i vusb vusb pin supply current en = high, usb_byp disconnected - 330 400 a i vdc_vusb vdc/vusb pin supply current en = low, i ldo = 0, usb_byp disconnected - 0.63 1.1 ma voltage regulation v batmax final output voltage, bat pin load = 10ma 4.158 4.2 4.242 v load = 10ma (t j = +25c) 4.174 4.2 4.226 v r ds(on)_vdc vdc linear on-resistance v bat =3.8v, i vdc = 0.3a, (t j = +25c) - 550 - m ? r ds(on)_vusb vusb linear on-resistance v bat = 3.8v, i usb = 0.3a, (t j = +25c) - 550 - m ? charge current v ivdc vdc pin output voltage v bat = 3.8v 1.22 1.25 1.28 v i vdc_chrg vdc constant current r ivdc = 12.4k ? , v bat = 2.7v to 3.8v 450 550 600 ma i vdc_trkl vdc trickle charge current r ivdc = 12.4k ? , v bat = 2.2v, given as a % of the i vdc_charge 15 17 19 %
API9221 c a r/wall or usb supply input lithium battery charger with ovp usb bypass and 10ma ldo API9221 document number: ds32204 rev. 2 - 2 6 of 15 www.diodes.com november 2011 ? diodes incorporated new product electrical characteristics (cont.) API9221 is tested at vdc = vusb = 5v at an ambient temperature of +25c unless otherwise noted. symbol parameter test conditions min typ. max unit v iusb iusb pin output voltage v bat = 3.8v 1.22 1.25 1.28 v i usb_chrg vusb constant current r iusb = 29.4k ? , v bat = 2.7v to 3.8v 180 232 260 ma i usb_trkl vusb trickle charge current r iusb = 29.4k ? , v bat = 2.2v and if i usb_chrg i vdc_trkl , then given as a % of the i usb_chrg 15 17 19 % if i usb_chrg i vdc_trkl - i usb_chrg - % i min dc and usb end-of-charge threshold r min = 10k ? 40 55 70 ma preconditioning charge threshold v min preconditioning charge threshold voltage 2.5 2.6 2.7 v recharge threshold v rch recharge threshold voltage 3.8 3.9 4.0 v protections ovp vdc vdc overvoltage level 6.7 6.9 7.1 v hovp vdc vdc overvoltage hysteresis - 240 340 mv ovp vusb vusb overvoltage level 5.3 5.4 5.55 v hovp vusb vusb overvoltage hysteresis - 150 200 mv i ocp short circuit (usb_byp) - 400 600 ma bypass fets usb_r ds(on) resistance vusb to usb_byp measured at 200ma, 4.3v < v dc < 5.3v - 1.16 2.0 ? vusb do dropout vusb to usb_byp i out = 150ma v vusb > 4.3v - 200 - mv
API9221 c a r/wall or usb supply input lithium battery charger with ovp usb bypass and 10ma ldo API9221 document number: ds32204 rev. 2 - 2 7 of 15 www.diodes.com november 2011 ? diodes incorporated new product electrical characteristics (cont.) API9221 is tested at vdc = vusb = 5v at an ambient temperature of +25c unless otherwise noted. symbol parameter test conditions min typ. max unit internal temperature monitoring t fold current fold back threshold - 125 - c logic input and output v ih en pin logic input high 1.4 - v v il en pin logic input low - 0.4 v r en en pin internal pull-down resistance 350 600 850 k ? v ol chg and ppr output voltage low pin current = 10ma - 0.8 v linear regulator v ldo output voltage - 4.94 - v v reg voltage regulation accuracy initial accuracy, i ldo = 10ma; t j = +25c -1 - +1 % line regulation v dc = v ldo + 0.5v to 6.5v t j = -40c to +125c -2.8 - +2.8 % load regulation i ldo = 10a to 10ma, vdc = v ldo + 0.5v to 6.5v t j = -40c to +125c -2.8 - +2.8 % v do dropout (vdc to v ldo ) i ldo = 10ma, v ldo = 4.9v, v dc > v ldo +0.5v - 20 50 mv i limit current limit for i ldo = 10ma, v dc = 5.5v 12 - - ma
API9221 c a r/wall or usb supply input lithium battery charger with ovp usb bypass and 10ma ldo API9221 document number: ds32204 rev. 2 - 2 8 of 15 www.diodes.com november 2011 ? diodes incorporated new product functional characteristics logic description a logic state table and diagrams of timing and charge profile are given at the end of this description. the battery charge function is disabled when the en input is pulled to logic high. this normally requires an external pull-up resistor connected to the system microcontroller i/o power supply. the API9221 has an internal resistor connected from this pin to gnd, typically 600k ? . in many applications a suitable pull-up resistor value is 100k ? . when en is pulled low or left open circuit, charging is enabled as described below. there are two open-drain logic outputs, ppr and chg . each of these can use an external pull-up resistor to an appropriate supply such as the microcontroller i/o supply, or can be left open circuit. a suitable value is 100k ? . alternatively these can each be used to drive an indicator led up to a maximum of 10ma. the output ppr is low when a valid power supply voltage is present at the vdc input or at the vusb input, independent of en . one of the two input voltages must be greater than the power-on threshold and less than the overvoltage protection threshold. the output chg is low when the battery is charging, but only until the end-of-c harge (eoc) condition is reached. together with ot her conditions as described below, the voltage at the batte ry connection bat is used to control the charging cu rrent. in the eoc state, chg is high to indicate that the charging phase has completed and the battery voltage has reached 4.2v ( 1%). in this state, the charger remains active and is able to supply load current and top up the battery as necessary. chg may be re-set as described below under charge conditions. auxiliary outputs the usb_byp and vdc_ldo outputs are available independently of the en input state. this allows a host controller to power up initially. usb bypass, usb_byp the output usb_byp provides power from the usb input when a valid power supply voltage is present at the vusb input. it is current limited to 400ma (nominally). it is therefore safely limited in current and voltage within the usb standard. vdc low dropout regulator vdc_ldo this output provides a r egulated 4.94v supply, up to 10ma, when a valid power supply voltage is present at the vdc input. charge conditions before charging can begin, one of the two input voltages must also exceed the battery voltage enough to overcome the input-output co mparator offset. when one of the supplies satisfies these conditions, and en is low, charging begins regardless of the state of the other supply. the valid input conditions are: for vdc: vpo r < vdc < ovp vdc and vdc > v bat +vos hc for vusb: vpo r < vusb < ovp vusb and vusb > v bat + vos hc where vpo r is the rising power-on threshold voltage, and vos hc is the rising input offset voltage relative to v bat . all these threshold voltages have defined hysteresis. when the charge current falls below imin, chg goes high (provided it has an external pull-up). this state is latched and is not re-set until one of the following events occurs: 1. en is driven high and low again 2. the active supply is removed and re-applied 3. v bat falls below the re-charge threshold of 3.9v (nominally) note that the outputs, bat, usb_byp and vdc_ldo are reverse current protected. if an external voltage higher than the supply voltage is connected to one of these outputs, that out put will be disabled. charging from adapter power (vdc pin) the battery can be charged from an ac powered wall adapter or in-car adapter at a current of up to 1.2a using this input pin. the maximum charge current is set by an external resistor, r ivdc connected between the ivdc and gnd pins. if vdc is greater than the power-on threshold voltage (vpo r ) and less than the over-voltage protection threshold (ovp vdc ), the battery will begin to charge at a rate dependent on the battery voltage. when vdc input is as recommended, (4.5v to 6.7v), no charge current is drawn from the vusb input as vdc takes precedence. input operation below 4.5v is also possible, but the charging rate may be affected. the resistor r ivdc determines the charge current according to ivdc r 6820 ivdc = amp for example, a resistor value of 13k ? sets a charge current of 0.525a. the recommended ivdc setting is 100ma to 1200ma.
API9221 c a r/wall or usb supply input lithium battery charger with ovp usb bypass and 10ma ldo API9221 document number: ds32204 rev. 2 - 2 9 of 15 www.diodes.com november 2011 ? diodes incorporated new product functional characteristics (cont.) charging from adapter power (vdc pin) (cont.) the maximum charge current available may be otherwise limited by the car/wall adapter current limit, by thermal protection within the API9221, or by the r ds(on) of the fet in the vdc charging path. for example, if ivdc is set to 1a, there is a voltage drop of 0.6v due the typical r ds(on) of 600m ? at room temperatur e. therefore, the voltage at the vdc input must be at least 4.8v to charge the battery to 4.2v in the minimum time. the vdc input is safe from damage up to 28v. charging from usb power (vusb pin) the battery can be charged at a current of up to 0.5a from this pin. in this case the maximum available charge current is set by an external resistor r iusb connected between the iusb and gnd pins. if vusb is greater than the power-on threshold voltage (vpo r ) and less than the over-voltage protection threshold (ovp vusb ), the battery will begin to charge at a rate dependent on the battery voltage. the resistor r iusb resistor determines the charge current according to iusb r 6820 iusb = amp for example, a resistor value of 22k ? sets a charge current of 0.31a. the recommended iusb setting is 46.5ma to 465ma. the maximum charge current available may be otherwise limited by the external usb current limit, or by thermal protection within the API9221. the r ds(on) of the fet in the usb charging path is typically 600m ? at room temperature. at the iusb limit of 465ma, there is a voltage drop of nearly 0.3v. therefore, the voltage at t he vusb input must be at least 4.5v to charge the battery to 4.2v in the minimum time. the vusb input is safe from damage up to 28v. trickle charge when the battery voltage is below the preconditioning threshold, v min , the charger is in the trickle charge state and the charge current is limited to 18% of the available charge current set by r ivdc or r iusb . if the usb charge current is programmed to a value less than the vdc trickle charge, then this value of the usb current is used in trickle mode (no derating). when the battery voltage reaches v min , the charge current increases to 100% of the available charge current. end-of-charge current during charging, as the battery voltage approaches the regulated value of 4.2v, the charging current will begin to decrease. eventually the charging current settles to a value just low enough to maintain the regulated voltage. when the current becomes le ss than the end-of-charge threshold current, i min, the logic output chg goes high. the threshold current is set by an external resistor connected between the imin and gnd pins. this is independent of whether the v dc or vusb input is valid. the resistor at imin determines the eoc threshold current according to imin min r 550 i = amp for example, a resistor value of 10k ? sets the eoc threshold current to 55ma. accuracy when the constant voltage phase has been reached, the battery is charged to 4.2v 1%. this is the maximum error over the ambient temper ature range from -40c to +85c. fault summary and protection overvoltage protection: if vdc is greater than ovp vdc (6.9v), the vdc charging path is turned off until vdc falls below ovp vdc - hovp vdc , where hovp vdc is the ovp hysteresis. similarly, if vusb is greater than ovp vusb (5.4v), the usb charging path is turned off until vusb falls below ovp vusb ? hovp vusb . usb_byp current limit: the usb_byp load current is limited to 400ma (nominally). usb_byp reverse blocking: if the voltage at usb_byp is greater than vusb, the usb bypass path is turned off. bat reverse blocking: if the battery voltage is greater than either vdc or vusb, t he relevant charge path is turned off. vdc_ldo reverse blocking: if the voltage at vdc_ldo is greater than vdc, the lin ear regulator is turned off. thermal protection: when the junction temperature reaches 125c, a current foldback circuit is activated. this effectively limits the power dissipation to a safe level.
API9221 c a r/wall or usb supply input lithium battery charger with ovp usb bypass and 10ma ldo API9221 document number: ds32204 rev. 2 - 2 10 of 15 www.diodes.com november 2011 ? diodes incorporated new product functional characteristics (cont.) power supply filtering and stability at each of the inputs vdc and vusb, a local decoupling capacitor is required to be connected to gnd. a minimum value of 1f is recommended, ceramic type x7r. (the usb standard sets an upper bound of capacitance somewhat larger than this.) at the linear regulator output vdc_ldo, a local decoupling capacitor is requi red, connected to gnd. a value of 1f is recommended, ceramic type x7r. at the battery connection bat, a local decoupling capacitor is required, connect ed to gnd. a value of 1f is recommended, ceramic type x7r. timing diagram en ppr vusb vdc vdc_ldo usb_byp vbat iusb ivdc chg 0v 4.94v i usb_byp i usb_byp +i chrg i ldo i ldo +i chrg enabled po 5.4v ovp vusb po 6.9v ovp vdc ovp vdc -hovp vdc ovp vusb -hovp vusb po = power-on i chrg = battery charging current
API9221 c a r/wall or usb supply input lithium battery charger with ovp usb bypass and 10ma ldo API9221 document number: ds32204 rev. 2 - 2 11 of 15 www.diodes.com november 2011 ? diodes incorporated new product logic state table inputs outputs en vdc input valid* vusb input valid* ppr chg charging state vdc_ldo usb_byp x no no hi z hi z off off off high yes no low hi z off on off low yes no low low on (vdc) on off high no yes low hi z off off on low no yes low low on (vusb) off on high yes yes low hi z off on on low yes yes low low on (vdc) on on * valid vdc input: vpo r < vdc < ovp vdc * valid vusb input: vpo r < vusb < ovp vusb x = don?t care when the charging state is on, the charge current also depends on the battery terminal voltage as described in the text. charging profile diagram
API9221 c a r/wall or usb supply input lithium battery charger with ovp usb bypass and 10ma ldo API9221 document number: ds32204 rev. 2 - 2 12 of 15 www.diodes.com november 2011 ? diodes incorporated new product ordering information API9221 fc g - 13 package packing green g : green fc : u-dfn4030-12 13 : tape & reel device package code packaging (note 5) 13? tape and reel quantity part number suffix API9221fcg-13 fc u-dfn4030-12 3000/tape & reel -13 notes: 5. 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 y : year : 0~9 w : week : a~z : 1~26 week; ( top view ) x : a~z : green y w x xx xx : bf : API9221 z : represents 52 and 53 a~z : 27~52 week; part number package identification code API9221fcg u-dfn4030-12 bf
API9221 c a r/wall or usb supply input lithium battery charger with ovp usb bypass and 10ma ldo API9221 document number: ds32204 rev. 2 - 2 13 of 15 www.diodes.com november 2011 ? diodes incorporated new product package outline dimensions (all dimensions in mm) suggested pad layout (all dimensions in mm) u-dfn4030-12 dim min max typ a 0.55 0.65 0.60 a1 0 0.05 0.02 a3 - - 0.15 b 0.20 0.30 0.25 d 3.95 4.05 4.00 d2 3.20 3.40 3.30 e - - 0.50 e 2.95 3.05 3.00 e2 1.60 1.80 1.70 l 0.30 0.40 0.35 z - - 0.625 all dimensions in mm dimensions value (in mm) c 0.500 x 0.300 x1 2.800 x2 3.350 y 0.600 y1 1.750 y2 3.400 pin1 c x (12x) y1 y2 y (12x) x2 x1 a a1 a3 d e e d2 e2 l (12x) b (12x) z (4x)
API9221 c a r/wall or usb supply input lithium battery charger with ovp usb bypass and 10ma ldo API9221 document number: ds32204 rev. 2 - 2 14 of 15 www.diodes.com november 2011 ? diodes incorporated new product taping orientation (note 6) notes: 6. the taping orientation of the other package type can be found on our website at http://www.diodes.com/datasheets/ap02 007.pdf
API9221 c a r/wall or usb supply input lithium battery charger with ovp usb bypass and 10ma ldo API9221 document number: ds32204 rev. 2 - 2 15 of 15 www.diodes.com november 2011 ? 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 incorpor ated website, harmless against all damages. diodes incorporated does not warrant or accept any liability whatsoever in respect of any pr oducts 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 harmless against all claims, dama ges, expenses, and attorney fee s arising out of, directly or indirectly, any claim of personal injury or death associated 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 mo re 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 syst ems 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 prope rly 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 diod es incorporated products in such safety-c ritical, 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 ? 2011, diodes incorporated www.diodes.com

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