BQ24250C_15 Datasheet, PDF (30/46 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
BIT
B7(MSB)
B6
B5
B4
B3
B2
B1(4)(5)
B0(LSB)
NAME
VBATREG_5 ⁽¹⁾
VBATREG_4 ⁽¹⁾
VBATREG_3 ⁽¹⁾
VBATREG_2 ⁽¹⁾
VBATREG_1 ⁽¹⁾
VBATREG_0 ⁽¹⁾
USB_DET_1/EN1
USB_DET_0/EN0
Register #3
Memory location: 02, Reset state: 1000 1111
READ/WRITE
FUNCTION
Read/Write
Battery Regulation Voltage: 640mV (default 1)
Read/Write
Battery Regulation Voltage: 320mV (default 0)
Read/Write
Battery Regulation Voltage: 160mV (default 0)
Read/Write
Battery Regulation Voltage: 80mV (default 0)
Read/Write
Battery Regulation Voltage: 40mV (default 1)
Read/Write
Battery Regulation Voltage: 20mV (default 1)
Read Only
Read Only
Return USB detection result or pin EN1/EN0 status –
00 – DCP detected / EN1=0, EN0=0
01 – CDP detected / EN1=0, EN0=1
10 – SDP detected / EN1=1, EN0=0
11 – Apple/TT or non-standard adaptor detected / EN1=1, EN0=1
(1) Charge voltage range is 3.5V—4.44V with the offset of 3.5V and step of 20mV (default 4.2V)
V_BATREG
USB_DET/EN
Sets the battery regulation voltage
Provides status of the D+/D– detection-results for spins that include the D+/D– pins or
the state of EN1/EN2 for spins that include the EN1/EN2 pins
BIT
B7(MSB)
B6
B5
B4
B3
B2
B1
B0(LSB)
NAME
ICHG_4^{(1) (2)}
ICHG_3^{(1) (2)}
ICHG_2^{(1) (2)}
ICHG_1^{(1) (2)}
ICHG_0^{(1) (2)}
ITERM_2 ⁽³⁾
ITERM_1 ⁽³⁾
ITERM_0 ⁽³⁾
Register #4
Memory location: 03, Reset state: 1111 1000
READ/WRITE
FUNCTION
Read/Write
Charge current
800mA – (default 1)
Read/Write
Charge current:
400mA – (default 1)
Read/Write
Charge current:
200mA – (default 1)
Read/Write
Charge current:
100mA – (default 1)
Read/Write
Charge current:
50mA – (default 1)
Read/Write
Termination current sense threshold: 100mA (default 0)
Read/Write
Termination current sense threshold: 50mA (default 0)
Read/Write
Termination current sense threshold: 25mA (default 0)
(1) Charge current offset is 500 mA and default charge current is external (maximum is 2.0A)
(2) When all bits are 1’s, it is external ISET charging mode
(3) Termination threshold voltage offset is 50mA. The default termination current is 50mA if the charge is selected from I2C. Otherwise,
termination is set to 10% of ICHG in external I_set mode with +/-10% accuracy.
I_CHG
I_TERM
Sets the charge current regulation
Sets the current level at which the charger will terminate
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