LP3971SQ-2G16/NOPB National Semiconductor, LP3971SQ-2G16/NOPB Datasheet - Page 34

• Manufacturer Part Number: LP3971SQ-2G16/NOPB
• Description: IC PMU FOR APPL PROCESSORS 40LLP
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LP3971SQ-2G16/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
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LP3971SQ-2G16; LP3971SQ-2G16; LP3971SQ-2G16TR

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Designation
Reset Value
Designation
Reset Value
BUCK 2 TARGET VOLTAGE 2 REGISTER (B2TV2) 8H'2A
Note: ** denotes EPROM programmable registers for default value.
BUCK 2 TARGET VOLTAGE 2 REGISTER (B2TV2) 8H'2A DEFINITIONS
BUCK 2 VOLTAGE RAMP CONTROL REGISTER (B2RC) 8H'2B
BUCK 2 VOLTAGE RAMP CONTROL REGISTER (B2RC) 8H'2B DEFINITIONS
Bit
7:5
4:0
Bit
7:5
4:0
Access
Access
R/W
R/W
Bit
—
—
Bit
Name
B2OV
Name
B2RS
—
—
7
0
Reserved
Output Voltage
Reserved
DVM Ramp Speed
Reserved
6
0
Data Code
Data Code
5h'0A
5h'0B
5h'0C
5h'01
5h'02
5h'03
5h'04
5h'05
5h'06
5h'07
5h'08
5h'09
4h'A
4h'0
4h'1
4h'2
4h'3
4h'4
4h'5
4h'6
4h'7
4h'8
4h'9
5
0
7
0
1**
6
0
4
Reserved
34
Ramp Rate
(mV/µs)
Instant
0.80
0.85
0.90
0.95
1.00
1.05
1.10
1.15
1.20
1.25
1.30
1.35
(V)
10
5
0
1
2
3
4
5
6
7
8
9
1**
Buck 2 Output Voltage (B2OV)**
3
Description
Description
4
0
Data Code
3
1
0**
2
5h'0D
5h'0E
5h'0F
5h'18
5h'11
5h'12
5h'13
5h'14
5h'15
5h'16
5h'17
5h'19
2
0
Ramp Rate
0**
1
1
1
1.40
1.45
1.50
1.60
1.65
1.70
1.80
1.90
2.50
2.80
3.00
3.30
(V)
0**
0
0
0