参数资料
型号: LP3918TLX-I
厂商: NATIONAL SEMICONDUCTOR CORP
元件分类: 电源管理
英文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, PBGA25
封装: 2.50 X 2.50 MM, MICRO, SMD-25
文件页数: 6/30页
文件大小: 1271K
代理商: LP3918TLX-I
Charger Control Register 3
CHARGER TERMINATION VOLTAGE PROGRAMMING
TABLE 6. LP3918 Charger Termination Voltage Control
Address
Register ID
V
TERM Selection Bits
8h'12
CHGCNTL3
VTERM[1]
VTERM[0]
Termination Voltage(V)
CHGCNTL3<5>
CHGCNTL3<4>
0
4.1
0
1
4.2 (Default)
1
0
4.3
1
4.4
END OF CHARGE CURRENT PROGRAMMING
TABLE 7. LP3918 EOC Current Control
Address
Register ID
End Of Charge Current Selection Bits
8h'12
CHGCNTL3
PROG_EOC[1]
PROG_EOC[0]
End Of Charge Current
CHGCNTL3<3>
CHGCNTL3<2>
0
0.1 (Default)
0
1
0.15C
1
0
0.2C
1
0.25C
CHARGING RESTART VOLTAGE PROGRAMMING
TABLE 8. LP3918 Charging Restart Voltage
Address
Register ID
Charging Restart Voltage Selection Bits
8h'12
CHGCNTL3
PROG_VRSTRT[1
]
PROG_VRSTRT[1]
Restart Voltage(V)
CHGCNTL3<1>
CHGCNTL3<0>
0
V
TERM - 50mV
0
1
V
TERM - 100mV
1
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.
TABLE 9. LP3918 USB Charging Selection
Address
Register ID
USB Charge Mode Control Bits
8h'10
CHGCNTL1
USB_Mode_En
CHG_Mode_En
Mode
Current
CHGCNTL1<7>
CHGCNTL1<6>
0
Fast Charge
Default or Selection
1
0
Fast Charge
Default or Selection
0
1
USB
100mA
1
USB
450mA
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LP3918
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