BQ2040SN-C408 BENCHMARQ, BQ2040SN-C408 Datasheet - Page 5

• 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

Charge efficiency
Full charge percentage
Digitial filter
Current integration gain
Self-discharge rate
Manufacturer data
Voltage gain1
Reserved
EDVF charging current
End of discharge voltage1
End of discharge voltage final
Full-charge capacity
Hold-off time
EEPROM check 2
Reserved
t step
Parameter Name
Table 1. Configuration Memory Map (Continued)
0x50-0x55 Programs ManufacturerData (0x23)
0x58-0x59 Reserved
0x56/0x57 Battery divider calibration value
0x5a/0x5b
0x60/0x61 Initializes and stores FullChargeCapacity (0x10)
0x5c/0x5d Sets EDV1
0x65-0x7f Reserved for future use
0x5e/0x5f Sets EDVF
Address
0x4b
0x4d
0x62
0x63
0x64
0x4c
0x4e
0x4f
Sets the high/low charge rate efficiencies
Sets the percent at which the battery is consid-
ered fully charged
Sets the minimum charge/discharge threshold
Programs the current integration gain to the
sense resistor value
Sets the battery’s self-discharge rate
Sets the charge current request when the battery
voltage is less than EDVF
Sets the t step for T/ t termination
Sets
EEPROM data integrity check byte
must = 0xb5
T/ t hold-off timer
5
Description
Length
48 bits
16 bits
16 bits
16 bits
16 bits
16 bits
16 bits
8 bits
8 bits
8 bits
8 bits
8 bits
8 bits
8 bits
8 bits
bq2040
Units
mAh
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA