Table 5-1. Pin Functions (continued)

PIN

I/O

TYPE

DESCRIPTION

CONNECTION IF

NOT USED

NO.

NAME

8

GPIO4

I/O

Digital

Primary function: General Purpose Input/Output signal. When configured as

an output pin, it can be included as part of the power sequencer output signal

to enable an external regulator.

Input: Ground,

Output: Floating

I

Digital

Alternative programmable function: ENABLE - External power-on control.

Ground

I

Digital

Alternative programmable function: TRIG_WDOG - Trigger signal for trigger

mode watchdog.

Ground

—

Analog

Alternative programmable function: BUCK1_VMON - Voltage monitoring input

for BUCK1 regulator.

Ground

I

Digital

Alternative programmable function: nSLEEP1 or nSLEEP2, which are the

sleep request signals for the device to go to lower power states (Active Low).

Ground

I

Digital

Alternative programmable function: WKUP1 or WKUP2, which are the wake-

up request signals for the device to go to higher power states.

Ground

9

nINT

O

Digital

Open-drain interrupt output, active LOW.

Floating

10

GPIO5

I/O

Digital

Primary function: General Purpose Input/Output signal. When configured as

an output pin, it can be included as part of the power sequencer output signal

to enable an external regulator.

Input: Ground,

Output: Floating

I

Digital

Alternative programmable function: SYNCCLKIN - External switching clock

input for Buck regulators.

Ground

O

Digital

Alternative programmable function: SYNCCLKOUT - Switching clock output for

external regulators.

Floating

O

Digital

Alternative programmable function: nRSTOUT_SOC - System reset or power

on reset output (low = reset).

Floating

I

Digital

Alternative programmable function: nSLEEP1 or nSLEEP2, which are the

sleep request signals for the device to go to lower power states (Active Low).

Ground

I

Digital

Alternative programmable function: WKUP1 or WKUP2, which are the wake-

up request signals for the device to go to higher power states.

Ground

11

SW_B1

—

Analog

BUCK1 switch node.

Floating

12

PVIN_B1

—

Power

Power input for BUCK1. The separate power pins PVIN_Bx are not connected

together internally – PVIN_Bx and VCCA pins must be connected together in

the application and be locally bypassed.

System supply

13

PGND

—

Ground

Power ground for Buck regulators.

Ground

14

PVIN_B2

—

Power

Power input for BUCK2. The separate power pins PVIN_Bx are not connected

together internally – PVIN_Bx and VCCA pins must be connected together in

the application and be locally bypassed.

System supply

15

SW_B2

—

Analog

BUCK2 switch node.

Floating

16

GPIO6

I/O

Digital

Primary function: General Purpose Input/Output signal. When configured as

an output pin, it can be included as part of the power sequencer output signal

to enable an external regulator.

Input: Ground,

Output: Floating

I

Digital

Alternative programmable function: nERR_MCU - System error count down

input signal from the MCU.

Floating

O

Digital

Alternative programmable function: SYNCCLKOUT - Switching clock output for

external regulators.

Floating

O

Digital

Alternative programmable function: PGOOD - Programmable Power Good

indication pin.

Floating

I

Digital

Alternative programmable function: nSLEEP1 or nSLEEP2, which are the

sleep request signals for the device to go to lower power states (Active Low).

Ground

I

Digital

Alternative programmable function: WKUP1 or WKUP2, which are the wake-

up request signals for the device to go to higher power states.

Ground

LP8762-Q1

SNVSCV7 – OCTOBER 2024

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