BQ24300 Datasheet, PDF (5/22 Pages) Texas Instruments – OVERVOLTAGE AND OVERCURRENT PROTECTION IC AND Li+ CHARGER FRONT-END PROTECTION IC

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bq24300
bq24304
SLUS764A – AUGUST 2007 – REVISED OCTOBER 2007
TERMINAL FUNCTIONS
TERMINAL
NAME
NO.
IN
1
OUT
8
PGATE
3
VBAT
6
CE
5
VSS
2
NC
4, 7
Thermal PAD
I/O
DESCRIPTION
I Input power, connect to external DC supply. Connect external 0.1μF (minimum) ceramic capacitor to VSS
O Output terminal to the charging system. Connect external 1μF capacitor (minimum) ceramic capacitor to
VSS
O Gate drive for optional external P-FET
I Battery voltage sense input. Connect to pack positive terminal through a resistor.
I Chip enable input. Active low. When CE = Hi, the input FET is off. Internally pulled down.
– Ground terminal
Do not connect to any external circuit. These pins may have internal connections used for test purposes.
There is an internal electrical connection between the exposed thermal pad and the VSS pin of the device.
–
The thermal pad must be connected to the same potential as the VSS pin on the printed circuit board. Do
not use the thermal pad as the primary ground input for the device. VSS pin must be connected to ground at
all times.
IN 1
VSS ²
PGATE ³
NC ⁴
bq24300
bq24304
8 OUT
7 NC
6 VBAT
5 CE
Copyright © 2007, Texas Instruments Incorporated
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