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SLUS694B – MARCH 2006 – REVISED AUGUST 2006
DEVICE INFORMATION
bq24070/1RHL
RHL PACKAGE
(TOP VIEW)
GND
V
REF
STAT1
STAT2
IN
BA T
BA T
ISET2
MODE
CE
2
3
4
5
6
7
8
1
20 19
18
17
16
15
14
13
11 12
GND
PG
OUT
OUT
OUT
TMR
DPPM
TS
9 10
ISET1
TERMINAL FUNCTIONS
TERMINAL
NAME
IN
PG
BAT
CE
DPPM
ISET1
ISET2
OUT
MODE
STAT1
STAT2
TMR
TS
GND
VREF
VSS
NO.
4
18
5, 6
9
13
10
7
15, 16, 17
8
2
3
14
12
19, 20
1
11
I/O
I
O
I/O
I
I
I/O
I
O
I
O
O
I/O
I/O
I
O
–
Charge input voltage
Power-good status output (open-drain)
Battery input and output.
Chip enable input (active high)
Dynamic power-path management set point (account for scale factor)
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
using ISET2.
Output terminal to the system
Power source selection input (Low for USB mode current limit)
Charge status output 1 (open-drain)
Charge status output 2 (open-drain)
Timer program input programmed by resistor. Disable safety timer and termination by tying TMR to V
REF
.
Temperature sense input
Ground input
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
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.
DESCRIPTION
VSS
7
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