LP3971SQ-G824/NOPB National Semiconductor, LP3971SQ-G824/NOPB Datasheet - Page 39
LP3971SQ-G824/NOPB
Manufacturer Part Number
LP3971SQ-G824/NOPB
Description
IC PMU MULTI FUNCT PROGR 40-LLP
Manufacturer
National Semiconductor
Series
PowerWise®r
Datasheet
1.LP3971SQ-B510NOPB.pdf
(50 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LP3971SQ-G824/NOPB
Manufacturer:
National Semiconductor
Quantity:
1 799
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