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LP3918TLX-A/NOPB Datasheet(PDF) 15 Page - Texas Instruments

Part # LP3918TLX-A/NOPB
Description  Battery Charge Management and Regulator Unit
PDF  39 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LP3918TLX-A/NOPB Datasheet(HTML) 15 Page - Texas Instruments

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LP3918
www.ti.com
SNVS476D – AUGUST 2007 – REVISED MAY 2013
8h'05
2.7
2.7
2.7
2.7
2.7
2.7
2.7
8h'06
2.75
2.75
2.75
2.75
2.75
2.75
2.75
8h'07
2.8
2.8
2.8
2.8
2.8
2.8
2.8
8h'08
2.85
2.85
2.85
2.85
2.85
2.85
2.85
8h'09
2.9
2.9
2.9
2.9
2.9
2.9
2.9
8h'0A
2.95
2.95
2.95
2.95
2.95
2.95
2.95
8h'0B
3.0
3.0
3.0
3.0
3.0
3.0
3.0
8h'0C
3.05
3.05
3.05
3.05
3.05
3.05
3.05
8h'0D
3.1
3.1
3.1
3.1
8h'0E
3.2
3.2
3.2
3.2
8h'0F
3.3
3.3
3.3
3.3
Charger Control Register 2
Note that Bits 7,6,5 are not used and must be set to 0 during write to this register.
CHARGER CURRENT PROGRAMMING
The following table summarizes the supported charging current values for the LP3918.
Default charge current after startup is highlighted in bold
Table 4. LP3918 Charger Current Programming
Address
Register ID
Current Selection Prog_ICHG<4..0> Bit 0 to Bit 4
00000
00001
00010
00011
00100
00101
00110
8h'11
CHGCNTL2
50mA
100mA
150mA
200mA
250mA
300mA
350mA
Address
Register ID
Current Selection Prog_ICHG<4..0> Bit 0 to Bit 4
00111
01000
01001
01010
01011
01100
01101
8h'11
CHGCNTL2
400mA
450mA
500mA
550mA
600mA
650mA
700mA
Address
Register ID
Current Selection Prog_ICHG<4..0> Bit 0 to Bit 4
01110
01111
10000
10001
10010
8h'11
CHGCNTL2
750mA
800mA
850mA
900mA
950mA
Charger Control Register 3
CHARGER TERMINATION VOLTAGE PROGRAMMING
Table 5. LP3918 Charger Termination Voltage Control
Address
Register ID
VTERM Selection Bits
VTERM[1]
VTERM[0]
Termination Voltage(V)
CHGCNTL3<5>
CHGCNTL3<4>
0
0
4.1
8h'12
CHGCNTL3
0
1
4.2 (Default)
1
0
4.3
1
1
4.4
Copyright © 2007–2013, Texas Instruments Incorporated
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