LP3918TLX-A/NOPB National Semiconductor, LP3918TLX-A/NOPB Datasheet - Page 20

• Manufacturer Part Number: LP3918TLX-A/NOPB
• Description: IC PMU BATT CHRGR/REG 25USMD
• Manufacturer: National Semiconductor

Specifications of LP3918TLX-A/NOPB

• Function: Charge Management
• Battery Type: Lithium-Ion (Li-Ion)
• Voltage - Supply: 4.5 V ~ 6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 25-UFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LP3918TLX-A

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CHARGER FULL RATE CURRENT
Programming Information
000[00000]
000[00001]
000[00010]
000[00011]
000[00100]
000[00101]
000[00110]
000[00111]
000[01000]
000[01001]
000[01010]
000[01011]
000[01100]
000[01101]
000[01110]
000[01111]
000[10000]
000[10001]
000[10010]
Data BITs
TABLE 12. Register Address 8h'11: CHGCNTL2
HEX
0C
0D
00
01
02
03
04
05
06
07
08
09
0A
0B
0E
0F
10
11
12
Prog_ICHG
NAME
FUNCTION
50mA
100mA
150mA
200mA
250mA
300mA
350mA
400mA
450mA
500mA
550mA
600mA
650mA
700mA
750mA
800mA
850mA
900mA
950mA
20
TERMINATION AND RESTART
The termination and restart voltage levels are determined by
the data in the VTERM[1:0] and PROG_VSTRT[1:0] bits in
the control register. The restart voltage is programmed rela-
tive to the selected termination voltage.
The Termination voltages available are 4.1V, 4.2V (default),
4.3V, and 4.4V.
The Restart voltages are determined relative to the termina-
tion voltage level and may be set to 50mV, 100mV, 150mV
(default), and 200mV below the set termination voltage level.
Programming Information
BIT
BIT
4
5
0
1
TABLE 13. Register Address 8h'12: CHGCNTL3
TABLE 14. Register Address 8h'12: CHGCNTL3
VRSTRT[0]
VRSTRT[1]
VTERM[0]
VTERM[1]
NAME
NAME
FUNCTION
Set the charging termination
voltage.
See Table 6
FUNCTION
Set the charging restart voltage.
See Table 8