BQ2057CSN BENCHMARQ, BQ2057CSN Datasheet - Page 4

• Manufacturer Part Number: BQ2057CSN
• Description: PROG BATTERY CHARGER, 2057, SOIC8
• Manufacturer: BENCHMARQ

Specifications of BQ2057CSN

• Battery Type: Li-Ion / Li-Polymer
• Input Voltage: 15V
• Battery Charge Voltage: 4.2V
• Charge Current Max: 2A
• Battery Ic Case Style: SOIC
• No. Of Pins: 8
• No. Of Series Cells: 1
• Operating Temperature: RoHS Compliant

4
SLUS025F − MAY 2001 − REVISED JULY 2002
detailed description
current-sense input
battery-voltage input
temperature sense input
charge-status output
charge-control output
charge-rate compensation input
supply voltage input
BAT
CC
COMP
SNS
STAT
TS
VCC
VSS
NAME
Battery current is sensed via the voltage developed on this pin by an external sense resistor. The external
resistor can be placed on either the high or low side of the battery. (See schematics for details.)
Voltage sense-input tied directly to the positive side of the battery.
Input for an external battery-temperature monitoring circuit. Connecting this input to VCC/2 disables this feature.
3-state indication of charge in progress, charge complete, and temperature fault or sleep mode.
Source-follower output that drives an external pass-transistor (PNP or P-channel MOSFET) for current and
voltage regulation.
Sets the charge-rate compensation level. The voltage-regulation output may be programmed to vary as a
function of the charge current delivered to the battery.
Power supply input and current reference for high-side sensing configuration.
SOIC (SN) and
TERMINAL
TSSOP (TS)
2
7
8
1
5
4
3
6
NO.
MSOP
(DGK)
8
5
6
7
3
2
1
4
I/O
I/O
O
O
I
I
I
I
I
Voltage sense input
Charge control output
Charge-rate compensation input (AutoComp)
Current sense input
Charge status output
Temperature sense input
Supply voltage
Ground
Terminal Functions
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DESCRIPTION
DESCRIPTION