SNVU815 October 2021 LP87564-Q1

1 Introduction

This technical reference manual can be used as a reference for the LP87564T-Q1 default register bits after power up. This technical reference manual does not provide information about the electrical characteristics, external components, package, or the functionality of the device. For this information and the full register map, refer to the datasheet.

Table 1-1 provides the quick overview of each regulator default OTP settings. Sequencing provides an overview of default power up and power down sequence. Table 3-1 lists all the default OTP settings after power up.

Table 1-1 Main OTP Settings for regulators

Description		Bit Name	Value
Device identification	OTP configuration	OTP_ID	89h
BUCK0	Output voltage	BUCK0_VSET	1100 mV
	Enable (ENx pin or I²C register write)	EN_BUCK0, EN_PIN_CTRL0, BUCK0_EN_PIN_SELECT	EN_BUCK0 bit
	Startup delay	BUCK0_STARTUP_DELAY	0 ms
	Shutdown delay	BUCK0_SHUTDOWN_DELAY	0 ms
	Force PWM	BUCK0_FPWM	Forced PWM
	Peak current limit	ILIM0	5.0 A
	Maximum load current	N/A	4 A
	Slew rate	SLEW_RATE0	1.9 mV/us
BUCK1	Output voltage	BUCK1_VSET	1100 mV
	Enable (ENx pin or I²C register write)	EN_BUCK1, EN_PIN_CTRL1, BUCK1_EN_PIN_SELECT	EN_BUCK1 bit
	Startup delay	BUCK1_STARTUP_DELAY	0 ms
	Shutdown delay	BUCK1_SHUTDOWN_DELAY	0 ms
	Force PWM	BUCK1_FPWM	Forced PWM
	Peak current limit	ILIM1	5.0 A
	Maximum load current	N/A	4 A
	Slew rate	SLEW_RATE1	1.9 mV/us
BUCK2	Output voltage	BUCK2_VSET	1000 mV
	Enable (ENx pin or I²C register write)	EN_BUCK2, EN_PIN_CTRL2, BUCK2_EN_PIN_SELECT	EN1 pin
	Startup delay	BUCK2_STARTUP_DELAY	0 ms
	Shutdown delay	BUCK2_SHUTDOWN_DELAY	0 ms
	Force PWM	BUCK2_FPWM	Forced PWM
	Peak current limit	ILIM2	5.0 A
	Maximum load current	N/A	4 A
	Slew rate	SLEW_RATE2	1.9 mV/us
BUCK3	Output voltage	BUCK3_VSET	1100 mV
	Enable (ENx pin or I²C register write)	EN_BUCK3, EN_PIN_CTRL3, BUCK3_EN_PIN_SELECT	EN_BUCK3 bit
	Startup delay	BUCK3_STARTUP_DELAY	0 ms
	Shutdown delay	BUCK3_SHUTDOWN_DELAY	0 ms
	Force PWM	BUCK3_FPWM	Forced PWM
	Peak current limit	ILIM3	5.0 A
	Maximum load current	N/A	4 A
	Slew rate	SLEW_RATE3	1.9 mV/us
Spread spectrum		EN_SPREAD_SPEC	Enabled
Switching frequency		N/A	2 MHz
I²C address		N/A	65h