general description the max14663 is a complete power solution for portable medical devices, including blood glucose meters. the max14663 integrates a high-efficiency single-cell li-ion switching charger targeted at space-limited portable applications with small batteries. the max14663 features a fully integrated electronic bat - tery seal to put the portable device in an ultra-low power state to preserve battery charge during prolonged stor - age to extend battery shelf life, and to enhance customer experience with immediate out-of-box use. the max14663 embeds a maxim proprietary modelgauge tm (fuel gauge) to provide an accurate estimate of the available capacity for rechargeable li-ion batteries. a step-up boost converter and led current sinks are also integrated for powering oled displays or led backlights. the max14663 features a cable detector to identify the presence of an unpowered, unconnected usb cable for the portable device system to decide on the mode of operation to prevent potential loss of accuracy and mea - surement errors. the max14663 operates over the -20c to +70c tem - perature range and is available in a (5mm x 5mm), 40-pin, tqfn-ep package. modelgauge tm is a registered trademark of maxim integrated products, inc. applications portable blood glucose meters portable medical devices usb connected devices beneits and features high-efficiency switching charger tailored for small capacity batteries integrated step-up converter 3-channel programmable-led current sinks battery isolation switch ? extends battery shelf life ? hardware/software conigurable ? integrated power-key monitor manual reset controller integrated host-side fuel gauge ? modelgauge algorithm ? calculates accurate state of charge ? tolerates temperature & load variation ? no error accumulation ? learning not necessary ? current-sense resistor not required fully integrated cable detection controller overvoltage protection thermal protection programmable interrupt generation (i 2 c) 28v tolerant vb input connection high esd protection (vb, dp, dm, kin) ? 15kv hbm esd protection ? 10kv air-gap protection ? 8kv contact discharge protection ordering information appears at end of data sheet. for related parts and recommended products to use with this part, refer to www.maximintegrated.com/max14663.related . 19-6817; rev 0; 9/13 max14663 portable medical power management solution with cable detection evaluation kit available downloaded from: http:///
pin name i/o function 1 vbc i/o vb bypass cap connection. use as current injection/measuring point in cable detection algorithm. 2 pgnd0 gnd charger power ground 3 pgnd1 gnd charger power ground 4 dp i esd protection for d+ 5 dm i esd protection for d- 6 chold o charge pump output 7 pvl o charger power regulated voltage 5.25v 8 c1n o charge-pump capacitor negative 9 c1p o charge-pump capacitor positive 10 ctg i connect to ground tqfn 5mm x 5mm max14663 top view 3536 34 33 1211 13 pgnd0 dp dm chold pvl 14 vbc led1thm kout led0 bout bgndkin mpc1 1 2 cell 4 5 6 7 27 28 29 30 26 24 23 22 bat cs rstavl gsub0 agnd pgnd1 led2 3 25 37 lx alrt 3839 40 sysbyp vb qstrt sclsda + bsw int 32 15 blx 31 16 17 18 19 20 seal c1n c1p ctg mpc0 8 9 10 21 gsub1 max14663 portable medical power management solution with cable detection www.maximintegrated.com maxim integrated 12 pin coniguration pin description downloaded from: http:///
pin name i/o function 11 sda i/o i 2 c data 12 scl i/o i 2 c clock 13 qstrt i quick-start input. allows reset of the fuel gauge through hardware. connect to gnd if not used. 14 alrt o fuel gauge interrupt 15 agnd gnd analog ground 16 gsub0 gnd substrate. connect to ground. 17 avl o charger analog 4.5v regulated supply 18 int o interrupt output, active-low, open-drain 19 rst o reset output, active-low, open-drain 20 seal i battery-storage seal input 21 mpc0 i multi-purpose control input 0 (charger/cable detect/led) 22 mpc1 i multi-purpose control input 1 (charger/cable detect/led) 23 kin i key input, active-low, internal pullup 24 kout o debounced key output, active-low, open-drain 25 thm i thermistor temperature sensing pin 26 led2 o programmable current sink 27 led1 o programmable current sink 28 led0 o programmable current sink 29 bout i boost-converter output 30 bgnd gnd boost power ground 31 gsub1 o substrate. connect to ground. 32 blx o boost-converter switching-node pin 33 bsw o boost-converter output power switch input 34 cell i fuel gauge voltage input 35 bat i/o li-ion battery connection 36 cs i charger current sense 37 lx o switching charger switch node 38 sys i/o system power connection 39 byp o reverse-protected bypass pin 40 vb i usb vbus supply max14663 portable medical power management solution with cable detection www.maximintegrated.com maxim integrated 13 pin description (continued) downloaded from: http:///
package information for the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages . note that a +, #, or - in the package code indicates rohs status only. package drawings may show a different suffix character, but the drawing pertains to the package regardless of rohs status. package type package code outline no. land pattern no. 40 tqfn t4055+1 21-0140 90-0016 ordering information part temp range pin-package max14663 etl+ -40oc to +85oc 40 tqfn Cep* +denotes a lead(pb)-free/rohs-compliant package. *ep = exposed pad. max14663 portable medical power management solution with cable detection www.maximintegrated.com maxim integrated 45 chip information process: bicmos downloaded from: http:///
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