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LP3921 Datasheet(PDF) 18 Page - Texas Instruments

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No. de pieza LP3921
Descripción Electrónicos  Battery Charger Management and Regulator Unit
PDF  41 Pages
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI1 - Texas Instruments

LP3921 Datasheet(HTML) 18 Page - Texas Instruments

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LP3921
SNVS580A – AUGUST 2008 – REVISED MAY 2013
www.ti.com
The following table summarizes the supported output voltages for the LP3921. Default voltages after startup are
highlighted in bold.
Table 4. LDO Output Voltage Programming
Data Code
LDO1
LDO2
VLDO3
LDO4
LDO5
LDO6
LDO7
LDOx PGM
(V)
(V)
(V)
(V)
(V)
(V)
(V)
O/P
8h'00
1.5
1.5
1.5
8h'01
1.8
1.8
1.8
8h'02
1.85
1.85
1.85
8h'03
2.5
2.5
2.5
2.5
8h'04
2.6
2.6
2.6
2.6
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
The following table summarizes the supported charging current values for the LP3921. Default charge current
after startup is 100 mA.
Table 5. Charging Current Programming
Prog_Ichg[4]
Prog_Ichg[3
Prog_Ichg[2]
Prog_Ichg[1]
Prog_Ichg[0]
I_Charge I mA
0
0
0
0
0
50
0
0
0
0
1
100 (Default)
0
0
0
1
0
150
0
0
0
1
1
200
0
0
1
0
0
250
0
0
1
0
1
300
0
0
1
1
0
350
0
0
1
1
1
400
0
1
0
0
0
450
0
1
0
0
1
500
0
1
0
1
0
550
0
1
0
1
1
600
0
1
1
0
0
650
0
1
1
0
1
700
0
1
1
1
0
750
0
1
1
1
1
800
1
0
0
0
0
850
1
0
0
0
1
900
1
0
0
1
0
950
18
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Copyright © 2008–2013, Texas Instruments Incorporated
Product Folder Links: LP3921



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