BQ24161B_15 Datasheet, PDF (33/52 Pages) Texas Instruments – bq2416xx 2.5A, Dual-Input, Single-Cell Switched-Mode Li-Ion Battery Charger with Power Path Management and I2C Interface

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bq24160, bq24160A, bq24161
bq24161B, bq24163, bq24168
SLUSAO0F – NOVEMBER 2011 – REVISED JULY 2014
BIT
NAME
Read/Write FUNCTION
B3
TS_EN
Read/Write 0 – TS function disabled
1 – TS function enabled (default 1)
B2
B1
B0 (LSB)
TS_FAULT1
TS_FAULT0
LOW_CHG
Read only
Read only
Read/ Write
TS Fault Mode:
00 – Normal, No TS fault
01 – TS temp < T_COLD or TS temp > T_HOT(Charging suspended)
10 – T_COOL > TS temp > T_COLD (Charge current reduced by half, bq24160 only)
11 – T_WARM < TS temp < T_HOT (Charge voltage reduced by 140mV, bq24160 only)
0 – Charge current as programmed in Register 0x05
1 – Charge current is half programmed value in Register 0x05
(default 0)
2xTMR_EN Bit (2x Timer Enable)
The 2xTMR_EN bit is used to slow down the timer when charge current is reduced by the system load.
When 2xTMR_EN is a "1", the safety timer is slowed to half speed effectively doubling the timer time.
The conditions that activate the 2x timer are: Input Current Limit, V_INDPM, Thermal Regulation,
LOW_CHG, BATSHRT and TS Cool. When 2xTMR_EN is a "0", the timer operates at normal speed in
all conditions.
LOW_CHG Bit (Low Charge Mode Enable)
The LOW_CHG bit is used to reduce the charge current from the programmed value. This feature is
used by systems where battery NTC is monitored by the host and requires a reduced charge current
setting or by systems that need a “preconditioning” current for low battery voltages. Write a “1” to this
bit to charge at half of the programmed charge current (bq24160/1/3/8). Write a “0” to this bit to charge
at the programmed charge current.
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