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LP3923 Datasheet(PDF) 17 Page - Texas Instruments

Part # LP3923
Description  LP3923 Cellular Phone Power Management Unit
PDF  37 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

LP3923 Datasheet(HTML) 17 Page - Texas Instruments

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LP3923
www.ti.com
SNVS567B – APRIL 2010 – REVISED MAY 2013
Table 9. Register 0x1C – MISC Control 1
EN_APU_TSD
0 - do not start PMU automatically after TSD event
1 - start PMU automatically after TSD event
PS_HOLD_DELAY
0 - PMU powerdown after PS_HOLD has been low for 35 ms
1 - PMU powerdown after PS_HOLD has been low for 350 ms
LDO OUTPUT VOLTAGE PROGRAMMING
The following table summarizes the supported output voltages for LP3923. Default voltages after start-up
sequences have been highlighted in bold.
Data Code LDO_Vx_OP[x]
LDOx [V]
Data Code LDO_Vx_OP[x]
LDOx [V]
8h'00
1.20
8h'10
2.20
8h'01
1.25
8h'11
2.40
8h'02
1.30
8h'12
2.50
8h'03
1.35
8h'13
2.60
8h'04
1.40
8h'14
2.65
8h'05
1.45
8h'15
2.70
8h'06
1.50
8h'16
2.75
8h'07
1.55
8h'17
2.80
8h08
1.60
8h'18
2.85
8h'09
1.65
8h'19
2.90
8h'0A
1.70
8h'1A
2.95
8h'0B
1.75
8h'1B
3.00(1)
8h'0C
1.80(1)
8h'1C
3.05
8h'0D
1.85
8h'1D
3.10
8h'0E
1.90
8h'1E
3.20
8h'0F
2.00
8h'1F
3.3
(1)
See Table 1.
CHARGING CURRENT PROGRAMMING
Table 10. The following table summarizes the supported currents for LP3923.
PROG_ ICHG[4]
PROG_ ICHG[3]
PROG_ ICHG[2]
PROG_ ICHG[1]
PROG_ ICHG[0]
ICHG (mA)
0
0
0
0
0
50
0
0
0
0
1
100
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 (Default)
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
Copyright © 2010–2013, Texas Instruments Incorporated
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