BQ2040SN-C408 BENCHMARQ, BQ2040SN-C408 Datasheet - Page 31

• Manufacturer Part Number: BQ2040SN-C408
• Description: BATTERY CHARGE MONITOR, SMD, 2040
• Manufacturer: BENCHMARQ

Specifications of BQ2040SN-C408

• Battery Management Function: Charger, Status Monitor
• Battery Type: Li-Ion / NiCd / NiMH
• Supply Voltage Range: 3V To 6.5V
• Battery Ic Case Style: SOIC
• No. Of Pins: 16
• Operating Temperature Range: 0°C
• Interface Type: 2-Wire, Serial

Data Sheet Revision History
Notes:
Ordering Information
ChangeNo.
3
3
3
3
3
3
3
3
3
3
3
4
4
4
4
4
4
Changes 1 and 2 refer to the 1998 Data Book
Change 3 = June1998 D changes from Jan. 1998 C.
Change 4 = June 1999 E changes from June 1998 D.
Page No.
15, 16
10
11
14
23
24
24
25
25
11
14
25
25
3
9
6
8
bq2040
Updated recommended application schematic.
Changed overcurrent fault conditon for ChargingCurrent < 1024mA.
4Hz operation of LED clarification.
Added descriptions for bits 7 and 13 of BatteryMode.
AtRateTimeToEmpty and AtRateTimeToFull invalid data indication correction.
RunTimeToEmpty, AverageTimeToEmpty and AverageTimeToFull invalid data
indication corrections.
Changed typical Battery low % value for Li-Ion with EDV1 = 3.0V/cell.
Li-Ion taper current is stored in 2’s complement.
Changed typical T step and Full-charge percentage for Li-Ion.
Voltage gain is (R4 + R5)/R4.
Changed typical EDV1 and EDVF values for Li-Ion.
Added V
The self discharge rate approx imately doubles or halves
Changed cycle count increase from 30 to 32 for condition request.
Changed AtRateOK() indication from EDV1 to EDVF
Changed self-discharge programming from 52.75/x to 52.73/x.
Changed recommended EDVF charging current from 0mA to 100mA
Device:
SB
bq2040 Gas Gauge IC With SMBus Interface
should not exceed 2.4V
Package Option:
Temperature Range:
SN = 16-pin narrow SOIC
blank = Commercial (0 to 70°C)
31
Description of Change
bq2040