LP3971SQ-G824/NOPB National Semiconductor, LP3971SQ-G824/NOPB Datasheet - Page 39

• Manufacturer Part Number: LP3971SQ-G824/NOPB
• Description: IC PMU MULTI FUNCT PROGR 40-LLP
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LP3971SQ-G824/NOPB

• Applications: Processor
• Current - Supply: 60µA
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 40-LLP
• For Use With: LP3971SQ-B410EV - BOARD EVALUATION LP3971SQ-B410
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LP3971SQ-G824TR

Designation
Reset Value
V
Note: ** denotes EPROM programmable registers for default value.
V
Serial interface register selection codes (Bold face voltages are default values).
Register Programming Examples
Example 1. Setting register 8h'12 value to 8h'3E' will enable LDOs 1–5.
Example 2. Setting register 8h'39 to 8h'CC' will set LDOs 1 and 2 to 3.0V. These voltages will appear at the LDO outputs if the
corresponding LDO has been enabled. Programming a voltage value to a LDO, which is off, will affect the LDO output voltage after
the LDO is enabled. Enabling and programming the output voltage are separate operations.
Bit
7:5
4:0
CC
CC
_LDO5 VOLTAGE CONTROL REGISTER (L5VCR) 8H'3B
_LDO5 VOLTAGE CONTROL REGISTER (L5VCR) 8H'3B DEFINITIONS
Access
R/W
Bit
—
Name
B1OV
—
7
0
Reserved
Reserved
6
0
Data Code
5
0
4h'2
4h'A
4h'B
4h'C
4h'D
4h'E
4h'F
4h'0
4h'1
4h'3
4h'4
4h'5
4h'6
4h'7
4h'8
4h'9
4
0
0**
Output Voltage
3
39
1.00
1.05
1.10
1.15
1.20
1.25
1.30
1.35
1.40
1.50
1.80
1.90
2.50
2.80
3.00
3.30
LDO 5 Output Voltage (L5OV)**
Description
0**
2
1**
1
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0**
0