BQ24250C_15 Datasheet, PDF (28/46 Pages) Texas Instruments – bq24250C 2A Single Input I2C, Standalone Switch-Mode Li-Ion Battery Charger with Power-Path Management

bq24250C
SLUSBY7 – JULY 2014
www.ti.com
8.5 Register Maps
BIT
NAME
B7(MSB) WD_FAULT
B6
WD_EN
B5
STAT_1
B4
STAT_0
B3
FAULT_3
B2
FAULT_2
B1
FAULT_1
B0(LSB) FAULT_0
Register #1
Memory location: 00, Reset state: x0xx xxxx
READ/WRITE
FUNCTION
Read only
Read:0 – No fault
1 – WD timeout if WD enabled
Read/Write
0 – Disable
1 – Enable (also resets WC timer)
Read only
Read only
00 – Ready
01 – Charge in progress
10 – Charge done
11 – Fault
Read only
Read only
Read only
Read only
0000 – Normal
0001 – Input OVP
0010 – Input UVLO
0011 – Sleep
0100 – Battery Temperature (TS) Fault
0101 – Battery OVP
0110 – Thermal Shutdown
0111 – Timer Fault
1000 – No Battery connected
1001 – ISET short
1010 – Input Fault and LDO low
WD_FAULT
‘0’ indicates no watch dog fault has occurred, where a ‘1’ indicates a fault has previously
occurred.
WD_EN
Enables or disables the internal watch dog timer. A ‘1’ enables the watch dog timer and a
‘0’ disables it. '1' is default for bq24251 only.
STAT
Indicates the charge controller status.
FAULT
Indicates the faults that have occurred. If multiple faults occurred, they can be read by
sequentially addressing this register (e.g. reading the register 2 or more times). Once all
faults have been read and the device is in a non-fault state, the fault register will show
“Normal”. Regarding the "Input Fault & LDO Low" the IC indicates this if LDO is low and
at the same time the input is below UVLO or coming out of UVLO with LDO still low.
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