november 2010 ? 2008 fairchild semiconductor corporation www.fairchildsemi.com fan5400 family ? rev. 1.0.2 fan5400 family? usb-compliant single-cell li-ion switching charger with usb-otg boost regulator fan5400 family usb-compliant single-cell li-ion switching charger with usb-otg boost regulator features ? fully integrated, high-efficiency charger for single-cell li-ion and li-polymer battery packs ? faster charging than linear ? charge voltage accuracy: 0.5% at 25c 1% from 0 to 125c ? 5% input current regulation accuracy ? 5% charge current regulation accuracy ? 20v absolute maximum input voltage ? 6v maximum input operating voltage ? 1.25a maximum charge rate ? programmable through high-speed i 2 c interface (3.4mb/s) with fast mode plus compatibility ? input current ? fast-charge / termination current ? charger voltage ? termination enable ? 3mhz synchronous buck pwm controller with wide duty cycle range ? small footprint 1 h external inductor ? safety timer with reset control ? 1.8v regulated output from vbus for auxiliary circuits ? weak input sources accommodated by reducing charging current to maintain minimum vbus voltage ? low reverse leakage to prevent battery drain to vbus ? 5v, 300ma boost mode for usb otg for 2.5 to 4.5v battery input applications ? cell phones, smart phones, pdas ? tablet, portable media players ? gaming device, digital cameras description the fan5400 family (fan540x) combines a highly integrated switch-mode charger, to minimize single-cell lithium-ion (li- ion) charging time from a usb power source, and a boost regulator to power a usb peripheral from the battery. the charging parameters and operating modes are programmable through an i 2 c interface that operates up to 3.4mbps. the charger and boost regulator circuits switch at 3mhz to minimize the size of external passive components. the fan540x provides battery charging in three phases: conditioning, constant current, and constant voltage. to ensure usb compliance and minimize charging time, the input current is limited to the value set through the i 2 c host. charge termination is determined by a programmable minimum current level. a safety timer with reset control provides a safety backup for the i 2 c host. the integrated circuit (ic) automatically restarts the charge cycle when the battery falls below an internal threshold. if the input source is removed, the ic enters a high-impedance mode with leakage from the battery to the input prevented. charge status is reported back to the host through the i 2 c port. charge current is reduced when the die temperature reaches 120c. the fan540x can operate as a boost regulator on command from the system. the boost regulator includes a soft-start that limits inrush current from the battery. the fan540x is available in a 1.96 x 1.87mm, 20-bump, 0.4mm pitch wlcsp package. fan540x sw pgnd c out l1 vbat + battery csin r sense 68m 1 h c bat system load 0.1 f vbus 1 f pmid 4.7 f sda scl otg/usb# c reg 1 f vreg stat 10 f disable c bus c mid figure 1. typical application (fan5403-05 pinout) a ll trademarks are the p ro p ert y of their res p ective owners.
? 2008 fairchild semiconductor corporation www.fairchildsemi.com fan5400 family ? rev. 1.0.2 2 fan5400 family ? usb-compliant single-cell li-ion switching charger with usb-otg boost regulator ordering information part number temperature range package pn bits: ic_info[4:3] packing method fan5400ucx -40 to 85c 20- bump, wafer- level chip-scale package (wlcsp), 0.4mm pitch, estimated size: 1.96 x 1.87mm 01 tape and reel FAN5401UCX -40 to 85c 00 tape and reel fan5402ucx -40 to 85c 01 tape and reel fan5403ucx -40 to 85c 10 tape and reel fan5404ucx -40 to 85c 11 tape and reel fan5405ucx -40 to 85c 10 tape and reel table 1. feature comparison summary part number pn bits: reg3[4:3] slave address automatic charge special charger (1) safety limits battery absent behavior e2 pin vreg (e3 pin) fan5400 01 1101011 yes no no off auxpwr (connect to vbat) pmid fan5401 00 1101011 no no no off fan5402 01 1101011 yes no no on fan5403 10 1101011 yes yes yes off disable 1.8v fan5404 11 1101011 no yes yes off fan5405 10 1101010 yes yes yes on note: 1. special charger is a current limited charger that is not a usb compliant source. table 2. recommended external components component description vendor parameter typ. unit l1 1 h, 20%, 1.3a, 2016 murata: lqm2mpn1r0m or equivalent l 1.0 h dcr (series r) 85 m c bat 10 f, 20%, 6.3v, x5r, 0603 murata: grm188r60j106m tdk: c1608x5r0j106m c 10 f c mid 4.7 f, 10%, 6.3v, x5r, 0603 murata: grm188r60j475k tdk: c1608x5r0j475k c (2) 4.7 f c bus 1.0 f, 10%, 25v, x5r, 0603 murata grm188r61e105k tdk:c1608x5r1e105m c 1.0 f note: 2. 6.3v rating is sufficient for c mid since pmid is protected from over-voltage surges on vbus by q3 (figure 3).
? 2008 fairchild semiconductor corporation www.fairchildsemi.com fan5400 family ? rev. 1.0.2 3 fan5400 family ? usb-compliant single-cell li-ion switching charger with usb-otg boost regulator block diagram figure 2. ic and system block diagram q2 pmid c in2 vbus c in1 q1 q1b sw pgnd l1 vbat 1 h c out + battery r sense 68m c bat system load q3 q1a charge pump csin figure 3. power stage pmid q1a q1b greater than vbat on off less than vbat off on
? 2008 fairchild semiconductor corporation www.fairchildsemi.com fan5400 family ? rev. 1.0.2 35 fan5400 family ? usb-compliant single-cell li-ion switching charger with usb-otg boost regulator physical dimensions bottom view side views top view ball a1 index area 1 23 4 a b c d e seating plane 20x a1 c 0.005 cab f ?0.2600.02 e d b a 0.625 0.547 0.06 c 0.05 c e d f 0.3780.018 0.2080.021 notes: a. no jedec registration applies. b. dimensions are in millimeters. c. dimensions and tolerance per asmey14.5m, 1994. d. datum c is defined by the spherical crowns of the balls. e. package nominal height is 586 microns 39 microns (547-625 microns). f. for dimensions d, e, x, and y see product datasheet. g. drawing filname: mkt-uc020aarev2. 0.03 c 2x 0.03 c 2x 0.40 1.20 0.40 1.60 (y) 0.018 (x) 0.018 recommended land pattern (nsmd type) ?0.20 cu pad ?0.30 solder mask opening 0.40 1.20 0.40 1.60 figure 51. 20-ball wlcsp, 4x5 array, 0.4mm pitch, 250m ball product-specific dimensions product d e x y fan540xucx 1.960 + 0.030 1.870 + 0.030 0.180 0.335 package drawings are provided as a service to customers considering fairchild components. drawings may change in any manner wit hout notice. please note the revision and/or date on the drawing and contact a fairchild semiconductor representative to verify or o btain the most recent revision. package specifications do not expand the terms of fairchild?s worldwide terms and conditions, specifically the warranty therein, which covers fairchild products. always visit fairchild semiconductor?s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/.
? 2008 fairchild semiconductor corporation www.fairchildsemi.com fan5400 family ? rev. 1.0.2 36 fan5400 family ? usb-compliant single-cell li-ion switching charger with usb-otg boost regulator
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