BQ2092_15 Datasheet, PDF (20/30 Pages) Texas Instruments – Gas Gauge IC with SMBus-Like Interface

Obsolete Device
bq2092
Table 9. Example Register Contents
EEPROM
EEPROM
Address Hex Contents
Low
Description Byte
Design
Capacity
0x00
Initial
Battery
Voltage
0x02
Fast charging
current
0x04
Fast charging
voltage
0x06
Remaining
Capacity
Alarm
0x08
FLAGS1
0x0a
FLAGS2
0x0b
Current
Measurement 0x0c
Gain¹
EDV1
0x0e
EDVF
0x10
High
Byte
0x01
0x03
0x05
0x07
0x09
0x0d
0x0f
0x11
Low
Byte
08
30
08
c4
b4
10
90
ee
16
d8
High
Byte
07
2a
07
3b
00
02
db
dc
Example
Values
1800mAh
Notes
This sets the initial full charge battery capacity
stored in FCC. FCC is updated with the actual full
to empty discharge capacity after a valid discharge
from RM = FCC to Voltage() = EDV1.
10800mV This register is used to set the battery voltage on reset.
1800mA
15300mV
This register is used to set the fast charge current for
the Smart Charger.
This register is used to set the fast charge voltage for
the Smart Charger.
180mAh This value represents the low capacity alarm value.
FLAGS1 should be set to 10h before pack shipment to
inhibit undesirable writes to the bq2092. (WRINH = 1.)
Li-Ion = b0h
NiMH = 90h
See FLAGS2 register for the bit description and the
proper value for programming FLAGS2. Selects rela-
tive display mode, selects NiMH compensation factors,
and enables bq2092 Smart Charger control.
37.5/.05
The current gain measurement and current integration
gain are related and defined for the bq2092 current
measurement. 0x0c = 37.5/sense resistor value in
ohms.
9450mV The value programmed is the two's complement of the
(1.05V/cell) threshold voltage in mV.
9000mV The value programmed is the two's complement of the
(1.0V/cell) threshold voltage in mV.
Note:
1. Can be adjusted to calibrate the battery pack.
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