LP3918 Datasheet, PDF (14/30 Pages) National Semiconductor (TI) – Battery Charge Management and Regulator Unit

Charger Control Register 3
CHARGER TERMINATION VOLTAGE PROGRAMMING
TABLE 6. LP3918 Charger Termination Voltage Control
Address
Register ID
8h'12
CHGCNTL3
VTERM[1]
CHGCNTL3<5>
0
0
1
1
V_TERM Selection Bits
VTERM[0]
CHGCNTL3<4>
0
1
0
1
Termination Voltage(V)
4.1
4.2 (Default)
4.3
4.4
END OF CHARGE CURRENT PROGRAMMING
TABLE 7. LP3918 EOC Current Control
Address
Register ID
8h'12
CHGCNTL3
PROG_EOC[1]
CHGCNTL3<3>
0
0
1
1
End Of Charge Current Selection Bits
PROG_EOC[0]
End Of Charge Current
CHGCNTL3<2>
0
0.1 (Default)
1
0.15C
0
0.2C
1
0.25C
CHARGING RESTART VOLTAGE PROGRAMMING
TABLE 8. LP3918 Charging Restart Voltage
Address
Register ID
8h'12
CHGCNTL3
Charging Restart Voltage Selection Bits
PROG_VRSTRT[1]
PROG_VRSTRT[1]
Restart Voltage(V)
CHGCNTL3<1>
CHGCNTL3<0>
0
0
V_TERM - 50mV
0
1
V_TERM - 100mV
1
0
V_TERM - 150mV
1
1
V_TERM - 200mV
Charger Control Register 1
CHARGING MODE SELECTION
Charging mode selection changes will only take place when the battery voltage is above the 3.0V pre-charge/Full-rate charge
threshold.
Address
Register ID
8h'10
CHGCNTL1
TABLE 9. LP3918 USB Charging Selection
USB_Mode_En
CHGCNTL1<7>
0
1
0
1
USB Charge Mode Control Bits
CHG_Mode_En
Mode
CHGCNTL1<6>
0
Fast Charge
0
Fast Charge
1
USB
1
USB
Current
Default or Selection
Default or Selection
100mA
450mA
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