BQ24314C Datasheet, PDF (3/26 Pages) Texas Instruments – Li+ Charger Front-End Protection IC

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5 Pin Configuration and Functions
bq24314C
SLUSAV3A – AUGUST 2012 – REVISED JULY 2015
DSG Package
8-Pin WSON With Exposed Thermal Pad
Top View
IN 1
VSS 2
NC 3
bq24314C
8 OUT
7 ILIM
6 VBAT
FAULT 4
5 _CE
NAME
CE
FAULT
ILIM
IN
NC
OUT
VBAT
VSS
PIN
NO.
5
4
7
1
3
8
6
2
Thermal PAD
Pin Functions
I/O
DESCRIPTION
I Chip enable input. Active low. When CE = High, the input FET is off. Internally pulled down.
O
Open-drain output, device status. FAULT = Low indicates that the input FET Q1 has been turned off due
to input overvoltage, input overcurrent, battery overvoltage, or thermal shutdown.
I/O Input overcurrent threshold programming. Connect a resistor to VSS to set the overcurrent threshold.
I Input power, connect to external DC supply. Connect external 1 μF ceramic capacitor (minimum) to V_SS.
—
These pins may have internal circuits used for test purposes. Do not make any external connections at
these pins for normal operation.
O Output terminal to the charging system. Connect external 1 μF ceramic capacitor (minimum) to V_SS.
I Battery voltage sense input. Connect to pack positive terminal through a resistor.
— Ground terminal
There is an internal electrical connection between the exposed thermal pad and the V_SS pin of the
—
device. The thermal pad must be connected to the same potential as the V_SS pin on the printed circuit
board. Do not use the thermal pad as the primary ground input for the device. The VSS pin must be
connected to ground at all times.
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