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bq24088 Datasheet(PDF) 4 Page - Texas Instruments |
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bq24088 Datasheet(HTML) 4 Page - Texas Instruments |
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4 / 42 page  1 IN 2 TMR 3 STAT 1 4 STAT 2 5 VSS 10 9 8 7 6 OUT BAT TE CE ISET 1 IN 2 TMR 3 STAT 1 4 STAT 2 5 VSS 10 9 8 7 6 OUT BAT CE PG ISET 1 IN 2 TMR 3 STAT 1 4 STAT 2 5 VSS 10 9 8 7 6 OUT BAT TS PG ISET bq24085, bq24086, bq24087, bq24088 SLUS784E – DECEMBER 2007 – REVISED DECEMBER 2015 www.ti.com 6 Pin Configuration and Functions bq24086 and bq24088 DRC Package bq24085 DRC Package 10-Pin VSON 10-Pin VSON Top View Top View bq24087 DRC Package 10-Pin VSON Top View Pin Functions PIN I/O DESCRIPTION NAME bq24086/8 bq24085 bq24087 Battery voltage sense input. Connect to the battery positive terminal. Connect BAT 9 9 9 I a 390- Ω resistor from BAT to OUT for I(OUT) < 200 mA. CE – 8 7 I Charge enable input. CE = LO enables charger. CE = HI disables charger. Charge input voltage and internal supply. Connect a 1- μF (minimum) IN 1 1 1 I capacitor from IN to VSS. CIN ≥ COUT Charge current set point, resistor connected from ISET to VSS sets charge ISET 6 6 6 O current value. Connect a 0.1- μF capacitor from BAT to ISET for I(OUT) < 200 mA. Charge current output. Connect to the battery positive terminal. Connect a 1- OUT 10 10 10 O μF (minimum) capacitor from OUT to VSS. PG 7 7 O Power good status output (open-collector), active low. STAT1 3 3 3 O Charge status output 1 (open-collector, see Table 3). STAT2 4 4 4 O Charge status output 2 (open-collector, see Table 3). Termination enable input. TE = LO enables termination detection and battery TE – – 8 I absent detection. TE = HI disables termination detection and battery absent detection. Safety timer program input, timer disabled if floating. Connect a resistor to TMR 2 2 2 I VSS pin to program safety timer timeout value. Temperature sense input, connect to battery pack thermistor. Connect an TS 8 – – I external resistive divider to program temperature thresholds. VSS 5 5 5 I Ground There is an internal electrical connection between the exposed thermal pad Exposed and Vss pin of the IC. The exposed thermal pad must be connected to the Thermal Pad Pad Pad – same potential as the VSS pin on the printed circuit board. Do not use the Pad thermal pad as the primary ground input for the IC. VSS pin must be connected to ground at all times. 4 Submit Documentation Feedback Copyright © 2007–2015, Texas Instruments Incorporated Product Folder Links: bq24085 bq24086 bq24087 bq24088 |
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