LP3971SQ-N510/NOPB National Semiconductor, LP3971SQ-N510/NOPB Datasheet - Page 8

• Manufacturer Part Number: LP3971SQ-N510/NOPB
• Description: IC PMU FOR ADV APPLICATION 40LLP
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LP3971SQ-N510/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-N510TR

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A: Analog Pin D: Digital Pin G: Ground Pin P: Power Pin I: Input Pin I/O: Input/Output Pin O: Output Pin
Note: In this document active low logic items are prefixed with a lowercase “n”
Pin #
34
35
36
37
38
39
40
BGND1,2,3
VIN Buck1
PWR_EN
SYS_EN
PGND1
Name
SYNC
SW1
I/O
G
G
O
I
I
I
I
Type
PWR
PWR
G
D
D
D
G
Bucks 1, 2 and 3 analog Ground
Frequency Synchronization: Connection to an external clock signal PLL to
synchronize the PMIC internal oscillator.
Input Digital enable pin for the high voltage power domain supplies. Output
from the Monahans processor.
Digital enable pin for the Low Voltage domain supplies. Output signal from
the Monahans processor
Buck1 NMOS Power Ground
Buck1 Switcher output
Battery input power to Buck1
8
Description