Datasheet

bq24272
www.ti.com SLUSB09 –JUNE 2012
Battery Termination/Fast Charge Current Register (READ/WRITE)
Memory location: 05, Reset state: 0011 0010
BIT NAME Read/Write FUNCTION
B7(MSB) I
CHRG4
Read/Write Charge current: 1200 mA – (default 0)
B6 I
CHRG3
Read/Write Charge current: 600 mA— (default 0)
B5 I
CHRG2
Read/Write Charge current: 300 mA—(default 1)
B4 I
CHRG1
Read/Write Charge current: 150 mA— (default 1)
B3 I
CHRG0
Read/Write Charge current: 75 mA (default 0)
B2 I
TERM2
Read/Write Termination current sense voltage: 200 mA (default 0)
B1 I
TERM1
Read/Write Termination current sense voltage: 100 mA (default 1)
B0(LSB) I
TERM0
Read/Write Termination current sense voltage: 50 mA (default 0)
• Charge current sense offset is 550mA and default charge current is 1000mA
• Termination threshold offset is 50mA and default termination current is 150mA
V
IN-DPM
Voltage/ DPPM Status Register
Memory location: 06, Reset state: xx00 0000
BIT NAME Read/Write FUNCTION
B7(MSB) MINSYS_STATUS Read Only 1 – Minimum System Voltage mode is active (low battery condition)
0 – Minimum System Voltage mode is not active
B6 DPM_STATUS Read Only 1 – V
IN
-DPM mode is active
0 – V
IN
-DPM mode is not active
B5 NA Read/Write NA
B4 NA Read/Write NA
B3 NA Read/Write NA
B2 V
INDPM2
Read/Write IN input V
IN-DPM
voltage: 320 mV (default 0)
B1 V
INDPM1
Read/Write IN input V
IN-DPM
voltage: 160 mV (default 0)
B0(LSB) V
INDPM0
Read/Write IN input V
IN-DPM
voltage: 80 mV (default 0)
• V
IN-DPM
voltage offset is 4.20 V and default V
IN-DPM
threshold is 4.20 V.
Safety Timer/ NTC Monitor Register (READ/WRITE)
Memory location: 07, Reset state: 1001 1xxx
BIT NAME Read/Write FUNCTION
B7(MSB) 2XTMR_EN Read/Write 1 – Timer slowed by 2x when in thermal regulation, input current limit, V
IN_DPM
or DPPM
0 – Timer not slowed at any time (default 0)
B6 TMR_1 Read/Write Safety Timer Time Limit
00 – 27 minute fast charge
B5 TMR_2 Read/Write
01 – 6 hour fast charge
10 – 9 hour fast charge
11 – Disable safety timers (default 00)
B4 NA Read/Write NA
B3 TS_EN Read/Write 0 – TS function disabled
1 – TS function enabled (default 1)
B2 TS_FAULT1 Read Only TS Fault Mode:
00 – Normal, No TS fault
B1 TS_FAULT0 Read Only
01 – TS temp < T
COLD
or TS temp > T
HOT
(Charging suspended)
10 – T
COOL
> TS temp > T
COLD
(Charge current reduced by half)
11 – T
WARM
< TS temp < T
HOT
(Charge voltage reduced by 140mV)
B0(LSB) LOW_CHG Read/Write 0 – Charge current as programmed in Register 0x05
1 – Charge current half programmed value in Register 0x05 (default 0)
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