Datasheet

STAT2
IN
BA T
BA T
ISET2
MODE
CE
bq24070/1RHL
RHLPACKAGE
(TOPVIEW)
PG
OUT
OUT
OUT
TMR
DPPM
TS
GND
V
REF
VSS
ISET1
201
1110
2
3
4
5
6
7
8
9
19
18
17
16
15
14
13
12
STAT1
GND
bq24070
bq24071
www.ti.com SLUS694F –MARCH 2006–REVISED DECEMBER 2009
DEVICE INFORMATION
TERMINAL FUNCTIONS
TERMINAL
I/O DESCRIPTION
NAME NO.
IN 4 I Charge input voltage
PG 18 O Power-good status output (open-drain)
BAT 5, 6 I/O Battery input and output.
CE 9 I Chip enable input (active high)
DPPM 13 I Dynamic power-path management set point (account for scale factor)
ISET1 10 I/O Charge current set point and precharge and termination set point
Charge current set point for USB port. (High = 500 mA, Low = 100 mA) See half-charge current mode
ISET2 7 I
using ISET2.
OUT 15, 16, 17 O Output terminal to the system
MODE 8 I Power source selection input (Low for USB mode current limit)
STAT1 2 O Charge status output 1 (open-drain)
STAT2 3 O Charge status output 2 (open-drain)
Timer program input programmed by resistor. Disable fast-charge safety timer and termination by tying
TMR 14 I/O
TMR to V
REF
.
TS 12 I/O Temperature sense input
GND 19, 20 I Ground input
VREF 1 O Internal reference signal
Ground input (the thermal pad on the underside of the package) There is an internal electrical connection
between the exposed thermal pad and VSS pin of the device. The exposed thermal pad must be
VSS 11 –
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.
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Product Folder Link(s): bq24070 bq24071