bq24070
bq24071
www.ti.com
SLUS694B–MARCH 2006–REVISED AUGUST 2006
DEVICE INFORMATION
bq24070/1RHL
RHL PACKAGE
(TOP VIEW)
GND
STAT1
STAT2
IN
2
3
4
5
6
7
8
9
19
18
17
16
15
14
13
12
1
20
PG
OUT
OUT
OUT
TMR
DPPM
TS
BAT
BAT
ISET2
MODE
CE
10
11
TERMINAL FUNCTIONS
TERMINAL
I/O
DESCRIPTION
NAME
NO.
4
IN
I
Charge input voltage
PG
18
5, 6
9
O
Power-good status output (open-drain)
BAT
CE
I/O Battery input and output.
I
I
Chip enable input (active high)
Dynamic power-path management set point (account for scale factor)
DPPM
ISET1
13
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
using ISET2.
ISET2
7
I
OUT
15, 16, 17
O
I
Output terminal to the system
MODE
STAT1
STAT2
TMR
8
2
Power source selection input (Low for USB mode current limit)
Charge status output 1 (open-drain)
O
O
3
Charge status output 2 (open-drain)
14
12
19, 20
1
I/O Timer program input programmed by resistor. Disable safety timer and termination by tying TMR to VREF
I/O Temperature sense input
.
TS
GND
I
Ground input
VREF
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
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.
VSS
11
–
7
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