Datasheet

LP3972
SNVS468K –SEPTEMBER 2006–REVISED MAY 2013 www.ti.com
BUCK1 (V
CC
_APPS) TARGET VOLTAGE 2 REGISTER
Buck1 (V
CC
_APPS) Target Voltage 2 Register (ADTV2) 8h’24
Bit 7 6 5 4 3 2 1 0
Designation Reserved Buck1 Output Voltage (B1OV2)
Reset Value 0 0 0 0 1 0 1 1
Buck1 (V
CC
_APPS) Target Voltage 2 Register (ADTV2) 8h’24 Definitions
Bit Access Name Description
7:5 — — Reserved
4:0 R/W B1OV2 Data Code Output Voltage Data Code Output Voltage
5h’0 0.725 5h’10 1.125
5h’1 0.750 5h’11 1.150
5h’2 0.775 5h’12 1.175
5h’3 0.800 5h’13 1.200
5h’4 0.825 5h’14 1.225
5h’5 0.850 5h’15 1.250
5h’6 0.875 5h’16 1.275
5h’7 0.900 5h’17 1.300
5h’8 0.925 5h’18 1.325
5h’9 0.950 5h’19 1.350
5h’A 0.975 5h’1A 1.375
5h’B 1.000 5h’1B 1.400
5h’C 1.025 5h’1C 1.425
5h’D 1.050 5h’1D 1.450
5h’E 1.075 5h’1E 1.475
5h’F 1.100 5h’1F 1.500
BUCK1 (V
CC
_APPS) VOLTAGE RAMP CONTROL REGISTER
Buck1 (V
CC
_APPS) Voltage Ramp Control Register (AVRC) 8h’25
Bit 7 6 5 4 3 2 1 0
Designation Reserved Ramp Rate (B1RR)
Reset Value 0 0 0 0 1 0 1 0
Buck1 (V
CC
_APPS) Voltage Ramp Control Register (AVRC) 8h’25 Definitions
Bit Access Name Description
7:5 — — Reserved
DVM Ramp Speed
Data Code Ramp Rate (mV/uS)
5h’0 Instant
5h’1 1
5h’2 2
5h’3 3
5h’4 4
4:0 R/W B1RR
5h’5 5
5h’6 6
5h’7 7
5h’8 8
5h’9 9
5h’A 10
4h’B-4h’1F Reserved
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