BQ24081_12 Datasheet, PDF (5/25 Pages) Texas Instruments – 1-A, SINGLE-CHIP, LI-ION AND LI-POL CHARGER IC

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V_SS STAT2 STAT1 GND IN
5432 1
PIN ASSIGNMENT
DRC PACKAGE
(TOP VIEW)
bq24080
bq24081
SLUS698E – MARCH 2006 – REVISED AUGUST 2011
V_SS STAT2 STAT1 GND IN
5
4
3
2
1
bq24080
bq24081
678
ISET GND PG
9 10
CE OUT
678
ISET GND TE
9 10
TS OUT
P0051-01
NAME
CE
GND
IN
ISET
OUT
PG
STAT1
STAT2
TE
TS
V_SS
Thermal
pad
PIN
NO.
bq24080 bq24081
9
–
2, 7
2, 7
1
1
6
6
10
10
8
–
3
3
4
4
–
8
–
9
5
5
–
–
PIN FUNCTIONS
I/O
DESCRIPTION
I Charge enable input (active-low)
– Ground
I Adapter dc voltage. Connect minimum 0.1-μF capacitor to V_SS.
I
Charge current. External resistor to V_SS sets precharge and fast-charge current, and also the
termination current value. Can be used to monitor the charge current.
O Charge current output. Connect minimum 0.1-μF capacitor to V_SS.
O Power-good status output (open-drain)
O
Charge status outputs (open-drain)
O
I Timer-enable input (active-low)
I/O Temperature sense; connect to NTC in battery pack.
– Ground
There is an internal electrical connection between the exposed thermal pad and the VSS pin of the
–
device. The exposed 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 V_SS pin must be connected to ground at all times.
Copyright © 2006–2011, Texas Instruments Incorporated
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