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1 ? fn9252.0 caution: these devices are sensitive to electrosta tic discharge; follow proper ic handling procedures. 1-888-intersil or 1-888-468-3774 | intersil (and design) is a registered trademark of intersil americas inc. copyright intersil americas inc. 2007. all rights reserved . thermaguard is a trademark of intersil americas inc. all other trademarks mentioned are the property of their respective owners. ISL9205 li-ion battery charger the ISL9205 is an integrated sing le-cell li-ion or li-polymer charger capable of operating at an input voltage as low as 2.5v. the low operating voltage allows the charger to work with a variety of ac adapters. the ISL9205 operates as a linear charger when the ac adapter is a voltage source. the battery is charged in a standard li-ion charge profile, i.e. a constant current phase followed be a constant voltage phase (cc/cv). the charge current during the constant curr ent phase is determined by the external resistor connected to the i ref pin. when the adapter output is a current-lim ited voltage source and the current limit is smaller than the programmed constant current of the ic, the ISL9205 operates as a pulse charger where the charge current is determined by the cu rrent limit of the ac adapter during the constant current phas e. the ISL9205 operates in a linear mode during the constant voltage phase in both adapter cases. the ISL9205 incorporates thermaguard tm which protects the ic against over temperature. if the die temperature rises above a typical value of +100c, the thermal foldback function reduces the charge current to prevent further temperature rise. the ISL9205 includes an external temperature monitoring function (not avail able in some package options). a negative temperature coeffici ent (ntc) thermistor is connected between the temp pin and gnd to monitor the battery or ambient temperatur e. the ISL9205 also includes a timer to set the time reference for various charge time limits. the timer is programmable with an external capacitor. a logic input and two open-drain logic outputs are available for controlling the charger and indi cating the charger status. the en pin enables the charger. the ISL9205b, ISL9205c, and ISL9205d incorporate a a timeout function so that the charge is terminated when the preset time limits have been reached. the fault pin is an open-drain output which turns on when a fault condition is encountered. the status pin is also an open-drain output which turns on when the charger is delivering current. features ? complete charger for single-cell li-ion/polymer batteries ? integrated pass elemen t and current sensor ? no external blocking diode required ? low component count and cost ? 25mv voltage accuracy over-temperature and input voltage range ? 15mv voltage accuracy at room temperature ? programmable charge current ? charge current thermal foldback for thermal protection (thermaguard tm ) ? trickle charge for fully discharged batteries ? power presence and charge indications ? ntc interface (ISL9205d) ? less than 3a leakage current off the battery when no input power attached or charger disabled ? ambient temperature range: -40c to +85c ? dfn packages ? pb-free plus anneal available (rohs compliant) applications ? mobile phones ? blue-tooth devices ? pdas ? mp3 players ? stand-alone cradle or travel chargers ? other handheld devices data sheet march 20, 2007
2 fn9252.0 march 20, 2007 ordering information part number (note) part marking temp. range (c) vbat (v) vsen temp timeout package (pb-free) pkg dwg. # ISL9205airz dlca -40 to +85 4.2 yes no no 10 ld 3x3 dfn l10.3x3 ISL9205airz-t dlca -40 to +85 4.2 yes no no 10 ld 3x3 dfn l10.3x3 ISL9205birz dlda -40 to +85 4.2 yes no yes 10 ld 3x3 dfn l10.3x3 ISL9205birz-t dlda -40 to +85 4.2 yes no yes 10 ld 3x3 dfn l10.3x3 ISL9205cirz dlea -40 to +85 4.256 yes no yes 10 ld 3x3 dfn l10.3x3 ISL9205cirz-t dlea -40 to +85 4.256 yes no yes 10 ld 3x3 dfn l10.3x3 ISL9205dirz dlfa -40 to +85 4.2 no yes yes 10 ld 3x3 dfn l10.3x3 ISL9205dirz-t dlfa -40 to +85 4.2 no yes yes 10 ld 3x3 dfn l10.3x3 note: intersil pb-free plus anneal products employ special pb-free material sets; mo lding compounds/die attach materials and 100 % matte tin plate termination finish, which are rohs compliant and compatible with both snpb and pb-free soldering operations. intersil pb-free p roducts are msl classified at pb-free peak reflow temper atures that meet or exceed the pb-free requirements of ipc/jedec j std-020. ISL9205
3 fn9252.0 march 20, 2007 pin description vin (pin 1) vin is the input power source. connect to a wall adapter. fault (pin 2) fault is an open-drain output indicating fault status. this pin is pulled to low under any fault condition. when a fault condition occurs, the time counter will be reset. when the charger is disabled, the fault pin outputs high impedance. status (pin 3) status is an open-drain output indicating charging and inhibit states. the status pin is pulled low when the charger is charging a battery. it will be turned into high impedance when the charge current drops to imin. this high impedance state will be latched until a recharge cycle or a new charge cycle starts. when the charger is disabled, the status pin outputs high impedance. time (pin 4) the time pin determines t he oscillation period by connecting a timing capacitor between this pin and gnd. the oscillator also provides a time reference for the charger. gnd (pin 5) gnd is the connection to system ground. en (pin 6) en is the enable logic input. connect the en pin to low to disable the charger or leave it floating to enable the charger. there is an internal 400k pull-up resistor at this pin. v2p8 (pin 7) this is a 2.8v reference voltage output. this pin provides a 2.8v voltage source when the input voltage is above the por threshold and outputs zero otherwise. the v2p8 pin can be used as an indication for adapter presence. iref (pin 8) this is the charge current programming and monitoring pin. connect a resistor between this pin and gnd to set the charge current during the constant current phase, as given by equation 1: where r iref is in k . temp (pin 9 for ISL9205d; n/a for ISL9205a, ISL9205b, and ISL9205c) temp is the input for an exte rnal ntc thermistor. the temp pin is also used for battery removal detection. vsen (pin 9 for isl 9205a,ISL9205b, and ISL9205c; n/a for ISL9205d) vsen is the remote voltage sens e pin. connect this pin as close to the battery positive terminal as possible. if the vsen pin is left floating, its voltage drops to 0v and the charger operates in trickle mode. vbat (pin 10) vbat is the connection to the battery. typically a 10 f tantalum capacitor is needed for stability when there is no battery attached. when a batt ery is attached, only a 0.1 f ceramic capacitor is required. i ref 80 r iref ----------------- a () = (eq. 1) ISL9205
4 fn9252.0 march 20, 2007 pinouts ISL9205a, ISL9205b, ISL9205c (10 ld dfn top view) ISL9205d (10 ld dfn) top view typical applications ISL9205a, ISL9205b and ISL9205c ISL9205d 1 2 3 4 5 10 9 8 7 6 vbat vsen iref v2p8 en vin fault s tatus time gnd 1 2 3 4 5 10 9 8 7 6 vbat temp iref v2p8 en vin fault s tatus time gnd v2p8 en gnd vbat iref fault vin 5v wall adapter battery pack imin vsen status time ISL9205a c1 f m 1 1k r1 1k r2 c2 1f 1f c3 r iref 80k c time 15nf d1 d2 1 r3 en dis ISL9205b ISL9205c + - v2p8 en gnd vbat iref fault vin 5v wall adapter battery pack imin temp status time ISL9205d v2p8 t c1 1f 1k r1 1k r2 c2 1f rt ru r iref 80k d1 d2 1 r3 en dis + - c3 1f c time 15nf ISL9205
5 fn9252.0 march 20, 2007 absolute maximum rati ngs thermal information voltage ratings for all pins . . . . . . . . . . . . . . . . . . . . . . . -0.3v to 7v charge current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0a esd rating human body model (per eia jesd22 method a114-b) . . . . .2kv machine model (per eia jed-4701 method c-111) . . . . . . . 200v recommended operating conditions ambient temperature range . . . . . . . . . . . . . . . . . . .-40c to +85c operating supply voltage (vin pin). . . . . . . . . . . . . . . 4.25v to 6.5v programmed charge current . . . . . . . . . . . . . . . . . 50ma to 900ma thermal resistance ja (c/w) jc (c/w) 3x3 dfn package (note 1), (note 2) . . 48 6 maximum junction temperature (plastic package). . . . . . . . +150c maximum storage temperature range . . . . . . . . .-65c to +150c maximum lead temperature (soldering 10s) . . . . . . . . . . . . +300c caution: stresses above those listed in ?absolute maximum ratings? may cause permanent damage to the device. this is a stress o nly rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. the 150c maximum junction temperature is for information purposes only. in reality, the current foldback feature will prevent t he junction from rising above a worst case temperature of 125c. notes: 1. ja is measured in free air with the component mounted on a high ef fective thermal conductivity te st board with "direct attach" fe atures. see tech brief tb379. 2. for jc , the ?case temp? location is the center of the exposed metal pad on the package underside. electrical specifications typical values are tested at v in = 5v and the ambient temperature at +25c. all maximum and minimum values are guaranteed under the recommended operat ing supply voltage range and ambient temperature range, unless otherwise noted. parameter symbol test conditions min typ max units power-on reset rising por threshold v por v bat = 3.0v, use v2p8 pin to indicate the comparator output. 3.2 3.6 3.9 v falling por threshold v por 2.25 2.5 2.7 v vin-bat offset voltage rising edge v os v bat = 4.2v, i bat = 20ma, use status pin to indicate the comparator output (note 3 45 80 100 mv standby current bat pin sink current i standby charger disabled or the input is floating - - 3.3 a vin pin supply current i vin charger disabled - 150 250 a vin pin supply current i vin charger enabled - 1.0 - ma voltage regulation output voltage (except ISL9205c) v ch tested at 50ma load, 5v input, and +25c 4.185 4.20 4.215 v v ch -40c < t a < +85c, 4.3v < v in < 6.5v 4.175 4.20 4.225 v output voltage (ISL9205c) v ch tested at 50ma load, 5v input, and +25c 4.241 4.256 4.271 v v ch -40c < t a < +85c, 4.3v < v in < 6.5v 4.231 4.256 4.281 v pmos on-resistance r ds(on) v bat = 4.0v, charge current = 0.35a - 500 - m charge current (note 4) constant charge current i cc r iref = 100k , v bat = 3.0v to 4.0v 760 800 840 ma trickle charge current i trk r iref = 100k , v bat = 0v to 2.5v 64 80 96 ma end-of-charge current i min r iref = 100k 70 80 90 ma v2p8 pin output v2p8 pin output voltage v v2p8 load current less than 1ma 2.8 2.9 3.0 v ISL9205
6 fn9252.0 march 20, 2007 trickle charge thresholds preconditioning charge threshold voltage v min 2.7 2.8 2.9 v preconditioning voltage hysteresis v minhys 50 100 150 mv recharge threshold v rch referenced to the charger output voltage v ch -225 -150 -70 mv recharge threshold hysteresis v rchhys -50-mv internal temperature monitoring charge current foldback threshold t fold 110 c ambient temperature monitoring (ISL9205d only) high voltage threshold v2p8 = 3.0v 1.98 2.0 2.02 v high voltage threshold hysteresis v2p8 = 3.0v - 1.9 - v low voltage threshold v2p8 = 3.0v 0.99 1 1.01 v low voltage threshold hysteresis v2p8 = 3.0v - 1.1 - v oscillator oscillation period t osc c time = 15nf 2.7 3.0 3.3 ms logic input and outputs en/toen pin logic input high 1.3 - - v en/toen pin logic input low --0.5v en/toen pin internal pull up resistance 200 400 600 k status/fault output voltage when on 10ma current - - 0.8 v status/fault leakage current v status = 6.5v - - 1 a note: 3. the 4.2v v bat is selected so that the status output can be used as the indication for the offset comparator output indication. if the v bat is lower than the por threshold, no output pin can be used for indication. 4. the charge current can be affected by the thermal foldback func tion if the ic under the test setup cannot dissipate the heat. electrical specifications typical values are tested at v in = 5v and the ambient temperature at +25c. all maximum and minimum values are guaranteed under the recommended operat ing supply voltage range and ambient temperature range, unless otherwise noted. (continued) parameter symbol test conditions min typ max units ISL9205
7 fn9252.0 march 20, 2007 typical operating performance the test conditions for the typica l operating performance are: v in = 5v, t a = +25c, r iref = r imin = 100k , v bat = 3.7v, unless otherwise noted figure 1. charger outp ut voltage vs charge current figure 2. charger output voltage vs temperature figure 3. charger output voltage vs input voltage charge current is 50ma figure 4. charge current vs output voltage figure 5. charge current vs ambient temperature figure 6. charge current vs input voltage 4.190 4.194 4.202 4.206 4.210 0.0 0.2 0.4 0.6 0.8 1.0 charge current (ma) vbat (v) 4.198 4.180 4.186 4.192 4.198 4.204 4.210 0 20 40 60 80 100 120 temperature (c) vbat (v) charge current = 50 ma 4.00 4.06 4.12 4.18 4.24 4.30 4.2 4.5 4.8 5.1 5.4 6.0 v in (v) vbat (v) ibat = 50ma 5.7 0.60 0.66 0.72 0.78 0.84 0.90 0.96 3.0 3.2 3.4 3.6 3.8 4.0 4.2 v bat ( v) ibat (a) 0.30 0.44 0.58 0.72 0.86 1.00 0 20 40 80 100 120 temperature (c) charge current (ma) 60 0.60 0.66 0.72 0.78 0.84 0.90 0.96 4.2 4.6 5.0 5.4 5.8 6.2 v in (v) i bat (a) ISL9205
8 fn9252.0 march 20, 2007 figure 7. v2p8 output vs input voltage figure 8. v2p8 output vs its load current figure 9. r ds(on) vs temperature at 3.7v output figure 10. r ds(on) vs output voltage using current limited adapters figure 11. input quiescent current vs input voltage figure 12. input quiescent current vs temperature typical operating performance the test conditions for the typica l operating performance are: v in = 5v, t a = +25c, r iref = r imin = 100k , v bat = 3.7v, unless otherwise noted (continued) 2.80 2.82 2.84 2.86 2.88 2.90 3.5 4.1 4.7 5.3 5.9 6.5 v in (v) v2p8 (v) 2.90 2.80 2.82 2.84 2.86 2.88 2.90 0.02.04.06.08.010.0 v2p8 load current (ma) v in (v) 2.88 0.5 0.6 0.7 0.8 0.9 1.0 020406080100 temperature (c) r ds(on ) ( ) 0.60 0.72 0.84 0.96 1.08 1.20 2.9 3.1 3.3 3.7 3.9 4.1 v bat (v) r ds(on) ( ) 3.5 0.00 0.10 0.20 0.30 0.40 0.50 3.0 3.6 4.2 5.4 6.0 v in (v) iq (ma) enabled disabled 4.8 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0 20 40 60 80 100 temperature (c) iq (ma) disabled enabled 120 ISL9205
9 fn9252.0 march 20, 2007 functional block diagram theory of operation the ISL9205 is an integrated charger for single-cell li-ion or li-polymer batteries. the isl92 05 is capable of operating in two operation modes, linear charge mode and pulse charge mode. the ISL9205 functions as a traditional linear charger when powered with a voltage source adapter. when powered with a current-limited ada pter, the charger functions as a pulse charger by fully turning on the pass element and the power dissipation is hence drastically reduced. constant current phase the ISL9205 starts the charge at a constant current (cc) phase. the charge current is regulated to fast charge the battery before the final voltage has been reached. the charge current is programmable with the iref pin and has two operation modes: trickle mode and constant current mode, depending on the battery voltage. when the battery voltage is lower than 2.8v, the charger operates in trickle mode where the charge current is set at 10% of the constant current mode current. the trickle mode is for preconditioning a deeply discharged battery. once the battery voltage is above the typical 2.8v threshol d, the constant current (cc) mode starts. the constant current is programmable between 50ma to 1a. constant voltage phase when the battery reaches the final voltage, the ISL9205 switches the operation to a co nstant voltage (cv) phase. the output voltage is regulated at the final voltage value. during the constant voltage phase, the charge current reduces gradually as the cell voltage rises. (16 ld option) logic status i sen vin vbat 100000:1 current mirror counter + - + - v min + - + - v ch iref + - fault recharge minbat v rechrg ca va min_i ir i sen i min = ir/10 chrg status fault + - + - input_ok v por trickle/fast references v2p8 temperature monitoring current references it time osc gnd vin v ch v min v por vrechrg q main q sen r iref c1 vsen + 80mv - en input_ok esd diode temp monitor temp ISL9205
10 fn9252.0 march 20, 2007 charge termination and recharge as the charge current reac hes the eoc (end-of-charge) current threshold during the constant voltage phase, the status pin open-drain fet is turned off to indicate an eoc condition. the eoc current is fixed at 10% of the programmed constant charge curr ent. if the time out function is available (ISL9205b, ISL9205c and ISL9205d), the charger will be terminated when the user programmed charge time limit has been reached. if the timeout function is not available (ISL9205a), the c harger will continue to charge until the en pin is pulled to l ogic low or the input power has been removed. should the ch arge is terminated by the timeout function, recharge will occur when the battery voltage falls to 150mv below the constant voltage value. the status open-drain fet is turned on when a recharge condition is met, whether the charger is previously terminated or not. an internal delay is implemented at the status pin for both eoc and recharge conditions to prevent nuisance trips due to noise and fast load current transitions. the delay time is approximately one clock cycle (varies between 0.5 and 1.5 clock) of the internal oscillator, which is programmed by the timer capacitor. the typical charge waveforms in figure 13 show the complete cycle operation. figure 13. typical charge cycle with timeout temperature monitoring and thermal foldback in the event where the die temperature reaches the thermal foldback threshold (+110c typical), the charge current is reduced accordingly to prevent further temperature rise. in the ISL9205d, there is an exte rnal temperature monitoring function. a negative temper ature coefficient (ntc) thermistor can be connected between the temp pin and gnd to monitor the battery temperature or ambient temperature. the hy steresis comparators internal to the ISL9205 provide a valid temper ature window centered at the voltage of the temp pin, which is programmed by the ntc and the pull-up resistor conn ected to the pin. when the measured temperature is outsi de this window, the charger is paused (both the charger and the timer are stopped) and a fault indication is issued. if the thermistor is attached to the battery, the temp function can be used to discover a battery removal condition when the temp pin voltage is much higher than the reference threshold. por the power-on reset (por) func tion monitors the supply voltage. the por has a rising edge threshold of 3.6v typical and 2.5v typical for falling edge. the charger is expected to operate when the input voltage is above the por threshold. after por the charger will continue to operate for supply voltage down to 2.5v typical. it is also required that the supply voltage be higher than the vbat pin voltage by a typical 80mv for the charger to function. oscillator, timeout and charge cycle the ISL9205 incorporates with an oscillation circuit using an external timing capacitor connected to the time pin. the oscillator sets the limit for the maximum charge time during the trickle mode and the fast mode (cc and cv). the maximum charge time (timeout) for the fast mode is set by: where the t osc is the oscillator period. the minimum programmable t osc is 20 s (c time = 100pf). the time limit for the trickle charge is 1/8 of the fast mode time limit. for the ISL9205a, there is no ti me-out function and hence the charger will never be turned off after the eoc but will indicate the eoc condition through the status pin. a charge cycle is the time inte rval between the time when the charger is enabled to the moment it is disabled. if the battery voltage is lower than the trickle charge threshold at the time the charger is enabled, the charger enters the trickle mode and the timer is reset and its limit is set to 1/8 of timeout. for ISL9205b, ISL9205c and ISL9205d, the charger will stop and indicate a timeout fault if the charge time is longer than the limit. if the trickle mode completes successfully before the time limit, the charger moves to cc mode and the timer is reset and the time limit is set to timeout. the charger needs to reach the eoc conditions before the timeout interval elapsed, otherwise, a timeout fault will be issued. the charger indicates the eoc with the status pin but does not terminate until the timeout interval elapsed. indications the ISL9205 has two open-drain status indication pins. these two pins are fault and status . these pins require an external pull-up resistor to function properly. the v2p8 pin can be used as the presence of ac adapter. charger disable the en pin allows the user to disable the charger. when the charger is disabled, all internal circuits are shut down and the quiescent current at the input pin is less than a typical value of 150ma. iref trickle cc cv i min 4.2v time 2.8v chg charge current charge voltage status indication v rec 10% timeout 1/8 of timeout iref timeout 2 22 = t osc (eq. 1) 2 ISL9205
11 fn9252.0 march 20, 2007 remote battery voltage sensing in the ISL9205a, ISL9205b and ISL9205c versions, a kelvin sense pin is provided for battery terminal voltage monitoring. thus, the ir drop due to the connection leads and pcb traces can be eliminated, resu lting a more accurate battery voltage monitoring, especially when the battery is located at a significant distance away from the ISL9205. if remote sensing is not needed, the vsen pin can be connected to vbat at the ic. applications information pcb layout guidance the ISL9205 uses a thermally-enhanced dfn package that has an exposed thermal pad at the bottom side of the package. the layout should connect as much as possible to copper on the exposed pad. typically the component layer is more effective in dissipating heat. the thermal impedance can be further reduced by usi ng other layers of copper connecting to the exposed pad through a thermal via array. a minimum of four (4) such thermal vias are recommended. each thermal via is recommended to have 0.3mm diameter and 0.7mm distance from other thermal vias. stability consideration the ISL9205 should behave like a current and thermal limited linear regulator. the c harger operation is stable with an output ceramic decoupling capacitor in the range of 1f to 200f, with or without a battery connected. input bypass capacitor due to the inductance of the power leads of the wall adapter or usb source, the input capacitor type must be properly selected to prevent high voltage transient during a hot-plug event. a tantalum capacitor is a good choice for its high esr, providing damping to the voltage transient. multi-layer ceramic capacitors, however, have a very low esr and hence when chosen as input capacitor, a 1 series resistor must be used, as shown in the ?typical applications? on page 4, to provide adequate damping. 2.8v bias voltage the ISL9205 provides a 2.8v voltage for biasing the internal control and logic circuit. this voltage is also available for external circuits such as the ntc thermistor circuit. the maximum allowed external load is 2ma. a bypass capacitor is needed at this pin for best performace. it is recommentded to use a minimum 1.0 f, x5r type of ceramic capacitor. state machine diagram the state machine diagram is shown in figure 14. the diagram starts with the power-off state. when the input voltage rises above the por threshold, the charger resets itself. then, if the charger is disabled, the charger stays in the charger disabled state. if the charger is enabled, the trickle charge starts. anytime when entering the trickle charge state, the internal time out timer is reset. there are two paths to exit the trickle charge, one is when the battery voltage rises above the preconditioning charge threshold within the 1/8 timeout interval and the other is when the 1/8 timeout interval has been elapsed before reaching the preconditioning charge voltage threshold. when timeout fault occurs, the charger enters the timeout fault state. there are only two ways to exit the timeout fault state, by toggling the en input or re-cycling the input power. if the charger finishes the trickle c harger before the 1/8 timeout limit, it moves to the fast charge state. when entering the fast charge state, the timeout timer is reset as well. if the charger hits eoc conditions before the timeout, the charger enters charge compete state. the charger stays on but the status indicates eoc condition, until the timeout (starting from entering the fast charge state) is reached then the charger moves to the inhibit st ate. in the inhibit state, the charger is off and the eoc condition continues to be indicated. ISL9205
12 fn9252.0 march 20, 2007 figure 14. state machine diagram temp fault charger: off status: off fault: on trickle charge charger: on status: on fault: off fast charge charger: on status: on fault: off charge complete charger: on status: off fault: off v in > v por v bat > v min before 1/8 timeout completes v bat > v rch and i chg < i min timeout temp fault removed anytime a temp fault occurs (except in timeout fault) v bat drops below v min v bat < v rch v bat < v min when 1/8 timeout completes timeout charger: off status: off fault: on charger disabled charger: off status: off fault: off enabled anytime en pin changes to disable pwr off charger: off status: off fault: off not enabled inhibit charger: off status: off fault: off por charger: off status: off fault: off note 3: isl6292 and isl6292c always have 1/8 timeout limit for trickle charge, but not isl9203. disable to charger disabled block timeout v bat < v rch ISL9205
13 all intersil u.s. products are manufactured, asse mbled and tested utilizing iso9000 quality systems. intersil corporation?s quality certifications ca n be viewed at www.intersil.com/design/quality intersil products are sold by description only. intersil corpor ation reserves the right to make changes in circuit design, soft ware and/or specifications at any time without notice. accordingly, the reader is cautioned to verify that data sheets are current before placing orders. information furnishe d by intersil is believed to be accurate and reliable. however, no responsibility is assumed by intersil or its subsidiaries for its use; nor for any infringements of paten ts or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of intersil or its subsidiari es. for information regarding intersil corporation and its products, see www.intersil.com fn9252.0 march 20, 2007 ISL9205 dual flat no-lead plastic package (dfn) d e a b 0.10 mc e 0.415 c section "c-c" nx (b) (a1) 2x c 0.15 0.15 2x b nx l ref. (nd-1)xe 5 a c (datum b) d2 d2/2 e2 e2/2 top view 7 bottom view 5 6 index area 8 ab nx k 6 index area (datum a) 12 n-1 n nx b 8 nx b nx l 0.200 c a seating plane 0.08 c a3 side view 0.10 c l10.3x3 10 lead dual flat no-lead plastic package symbol millimeters notes min nominal max a 0.80 0.90 1.00 - a1 - - 0.05 - a3 0.20 ref - b 0.18 0.23 0.28 5,8 d 3.00 bsc - d2 1.95 2.00 2.05 7,8 e 3.00 bsc - e2 1.55 1.60 1.65 7,8 e 0.50 bsc - k0.25 - - - l0.30 0.35 0.40 8 n102 nd 5 3 rev. 3 6/04 notes: 1. dimensioning and tolerancing conform to asme y14.5-1994. 2. n is the number of terminals. 3. nd refers to the number of terminals on d. 4. all dimensions are in millimeters. angles are in degrees. 5. dimension b applies to the meta llized terminal and is measured between 0.15mm and 0.30mm from the terminal tip. 6. the configuration of the pin #1 identifier is optional, but must be located within the zone indicated. the pin #1 identifier may be either a mold or mark feature. 7. dimensions d2 and e2 are fo r the exposed pads which provide improved electrical and thermal performance. 8. nominal dimensions are prov ided to assist with pcb land pattern design efforts, see intersil technical brief tb389. for odd terminal/side c l e terminal tip l c c

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