BQ24180 Datasheet, PDF (28/39 Pages) Texas Instruments – Fully Integrated Switch-Mode One-Cell Li-Ion Charger with Full USB Compliance and Accessory Power Connection

bq24180
SLUSA02 A – FEBRUARY 2010 – REVISED FEBRUARY 2010
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REGISTER DESCRIPTION
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BIT
B7(MSB)
B6
B5
B4
B3
B2
B1
B0(LSB)
Status/Control Register (READ/WRITE) – Memory location: 00, Reset state: x1xx 0xxx
NAME
Read/Write FUNCTION
TMR_RST
Read/Write Write: TMR_RST function, write "1" to reset the watchdog timer (auto clear)
Read: 0 – PSEL indicates low, 1- PSEL indicates high
EN_STAT
Read/Write 1-Enable STAT function, 0-Disable STAT function (default 1)
STAT2
STAT1
Read only
00-Ready, 01-Charge in progress, 10-Charge done, 11-Fault
Read only
NA
Read only NA
FAULT_3
FAULT_2
FAULT_1
Read only
Read only
Read only
Charge mode: 000-Normal, 001-VBUS OVP, 010-Sleep mode, 011- Faulty Adapter or
VBUS<V_UVLO, 100-DCOUT Current Limit tripped, 101-Thermal shutdown or TS Fault,
110-Timer fault, 111-No battery
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Control Register (READ/WRITE) – Memory location: 01, Reset state: 0011 0000
BIT
NAME
Read/Write FUNCTION
B7(MSB)
B6
Iin_Limit_2
Iin_Limit_1
Read/Write 00-USB host with 100-mA current limit, 01-USB host with 500-mA current limit, 10-USB
Read/Write ^{host/charger with 800-mA current limit, 11-No input current limit (default 00(1))}
B5
DCOUT_ILIM1 Read/Write 00-DCOUT 350mA current limit, 01- DCOUT 750mA current limit, 10- DCOUT 1050mA
B4
DCOUT_ILIM2 Read/Write ^{current limit, 11- DCOUT 1400mA current limit (default 11)}
B3
TE
Read/Write 1-Enable charge current termination, 0-Disable charge current termination (default 0)
B2
CE
Read/Write 1-Charger is disabled, 0-Charger enabled (default 0)
B1
HZ_MODE
Read/Write 1-High impedance mode, 0-Not high impedance mode (default 0)
B0 (LSB) DCOUT_EN
Read/Write 1-DCOUT Enabled, 0-DCOUT Disabled. (default 0)
(1) When in DEFAULT mode, the PSEL input determines the input current limit.
Control/Battery Voltage Register (READ/WRITE) – Memory location: 02, Reset state: 0001 01XX
BIT
NAME
Read/Write FUNCTION
B7(MSB)
B6
B5
B4
B3
B2
B1
V_OREG5
V_OREG4
V_OREG3
V_OREG2
V_OREG1
V_OREG0
NA
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Battery Regulation Voltage: 640mV (default 0)
Battery Regulation Voltage: 320mV (default 0)
Battery Regulation Voltage: 160mV (default 0)
Battery Regulation Voltage: 80mV (default 1)
Battery Regulation Voltage: 40mV (default 0)
Battery Regulation Voltage: 20mV (default 1)
NA
B0(LSB)
NA
Read/Write NA
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• Charge voltage range is 3.5V–4.44V with the offset of 3.5V and step of 20mV (default 3.6V).
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