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LP3921 Fiches technique(PDF) 18 Page - Texas Instruments

No de pièce LP3921
Description  LP3921 Battery Charger Management and Regulator Unit with Integrated Boomer™ Audio Amplifier
PDF  44 Pages
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Fabricant  TI2 [Texas Instruments]
Site Internet  https://www.ti.com
Logo TI2 - Texas Instruments

LP3921 Fiches technique(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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