LP3918TL NSC [National Semiconductor], LP3918TL Datasheet - Page 14

• Manufacturer Part Number: LP3918TL
• Description: Battery Charge Management and Regulator Unit
• Manufacturer: NSC [National Semiconductor]

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Charger Control Register 3
CHARGER TERMINATION VOLTAGE PROGRAMMING
END OF CHARGE CURRENT PROGRAMMING
CHARGING RESTART VOLTAGE PROGRAMMING
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
Address
Address
Address
8h'10
8h'12
8h'12
8h'12
CHGCNTL1
Register ID
CHGCNTL3
Register ID
CHGCNTL3
Register ID
CHGCNTL3
Register ID
TABLE 6. LP3918 Charger Termination Voltage Control
USB_Mode_En
CHGCNTL1<7>
PROG_VRSTRT[1]
CHGCNTL3<3>
PROG_EOC[1]
CHGCNTL3<5>
TABLE 8. LP3918 Charging Restart Voltage
TABLE 9. LP3918 USB Charging Selection
CHGCNTL3<1>
0
1
0
1
VTERM[1]
TABLE 7. LP3918 EOC Current Control
0
0
1
1
0
0
1
1
0
0
1
1
CHG_Mode_En
CHGCNTL1<6>
Charging Restart Voltage Selection Bits
End Of Charge Current Selection Bits
14
USB Charge Mode Control Bits
CHGCNTL3<4>
0
0
1
1
CHGCNTL3<2>
PROG_EOC[0]
VTERM[0]
V
PROG_VRSTRT[1]
TERM
CHGCNTL3<0>
0
1
0
1
0
1
0
1
Selection Bits
0
1
0
1
Fast Charge
Fast Charge
Mode
USB
USB
Termination Voltage(V)
End Of Charge Current
4.2 (Default)
0.1 (Default)
Restart Voltage(V)
Default or Selection
Default or Selection
V
V
V
0.15C
0.25C
V
0.2C
4.1
4.3
4.4
TERM
TERM
TERM
TERM
Current
100mA
450mA
- 150mV
- 100mV
- 200mV
- 50mV