LP3918 Datasheet, PDF (16/39 Pages) National Semiconductor (TI) – Battery Charge Management and Regulator Unit

LP3918
SNVS476D – AUGUST 2007 – REVISED MAY 2013
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END OF CHARGE CURRENT PROGRAMMING
Address
8h'12
Register ID
CHGCNTL3
Table 6. LP3918 EOC Current Control
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
Address
8h'12
Register ID
CHGCNTL3
Table 7. LP3918 Charging Restart Voltage
PROG_VRSTRT[1]
CHGCNTL3<1>
0
0
1
1
Charging Restart Voltage Selection Bits
PROG_VRSTRT[1]
Restart Voltage(V)
CHGCNTL3<0>
0
V_TERM - 50mV
1
V_TERM - 100mV
0
V_TERM - 150mV
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
8h'10
Register ID
CHGCNTL1
Table 8. LP3918 USB Charging Selection
USB_Mode_En
CHGCNTL1<7>
0
USB Charge Mode Control Bits
CHG_Mode_En
Mode
CHGCNTL1<6>
0
Fast Charge
1
0
Fast Charge
0
1
1
1
USB
USB
Current
Default or
Selection
Default or
Selection
100mA
450mA
16
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