SNVU814 October 2021 LP8732-Q1

2 OTP Memory Device Settings

This section lists all of the device settings that are downloaded from OTP memory.

Table 2-1 lists the device settings for I²C and OTP revision ID values.

Table 2-1 Device Identification and I²C Settings

	Description	Bit Name	LP873245-Q1
I²C address			61h
DEVICE_ID	Device specific ID code	DEVICE_ID	01h
OTP_ID	Identification code for OTP version	OTP_ID	45h

Table 2-2 lists the device settings for BUCK0 and BUCK1. The maximum allowed slew-rate for BUCKx depends on the output capacitance. Refer to the LP8732xx -Q1 Dual High-Current Buck Converter and Dual Linear Regulator data sheet for output capacitance boundary conditions.

Table 2-2 BUCK0 and BUCK1 OTP Settings

	Description	Bit Name	LP873245-Q1
	Buck phase configuration (2 single phase Bucks or combined 2 phase, denoted as 1+1 or 2-phase)		1+1
	Switching frequency		2 MHz
	Spread spectrum	EN_SPREAD_SPEC	Enabled
BUCK0	Output voltage	BUCK0_VSET	1.100 V
	Enable, EN-pin or I²C register	BUCK0_EN_PIN_CTRL	EN-pin
	Control for BUCK0	BUCK0_EN	High
	Force PWM mode or auto mode	BUCK0_FPWM	Yes
	Force Multiphase	BUCK0_FPWM_MP	No
	Peak current limit	BUCK0_ILIM	3 A
	Maximum load current limit	NA	2 A
	Slew rate	BUCK0_SLEW_RATE	3.8 mV/us
	Startup delay	BUCK0_STARTUP_DELAY	11 ms
	Shutdown delay	BUCK0_SHUTDOWN_DELAY	9 ms
BUCK1	Output voltage	BUCK1_VSET	1.100 V
	Enable, EN-pin or I²C register	BUCK1_EN_PIN_CTRL	EN-pin
	Control for BUCK1	BUCK1_EN	High
	Force PWM mode or auto mode	BUCK1_FPWM	Yes
	Peak current limit	BUCK1_ILIM	3 A
	Maximum load current limit	NA	2 A
	Slew rate	BUCK1_SLEW_RATE	3.8 mV/us
	Startup delay	BUCK1_STARTUP_DELAY	11 ms
	Shutdown delay	BUCK1_SHUTDOWN_DELAY	9 ms

Table 2-3 lists the device settings for LDO0 and LDO1.

Table 2-3 LDO0 and LDO1 OTP Settings

Table 2-4 lists the device settings for GPIOs.

Table 2-4 EN, CLKIN, and GPIO Pin Settings

	Description	Bit Name	LP873245-Q1
EN pin	EN pin pulldown resistor enable or disable	EN_PD	Enabled
CLKIN pin	CLKIN or GPO2 mode selection	CLKIN_PIN_SEL	GPO2
	CLKIN pin pulldown resistor enable or disable (applicable for both CLKIN and GPO2 modes.)	CLKIN_PD	Enabled
	Frequency of external clock when connected to CLKIN	EXT_CLK_FREQ	2 MHz
	Enable for the internal PLL. When PLL disabled, internal RC OSC is used	EN_PLL	Not Used
GPO	GPO output type (push-pull or open drain)	GPO_OD	PP
	Enable, EN-pin or I²C register	GPO_EN_PIN_CTRL	EN-pin
	Control for GPO	GPO_EN	High
	Startup delay	GPO_ STARTUP_ DELAY	12 ms
	Shutdown delay	GPO_ SHUTDOWN_ DELAY	8 ms
GPO2	GPO2 output type (push-pull or open drain)	GPO2_OD	OD
	Enable, EN-pin or I²C register	GPO2_EN_PIN_CTRL	I2C
	Control for GPO2	GPO2_EN	High
	Startup delay	GPO2_ STARTUP_ DELAY	0 ms
	Shutdown delay	GPO2_ SHUTDOWN_ DELAY	0 ms

Table 2-5 lists the device protection settings.

Table 2-5 Protections OTP Settings

	Description	Bit Name	LP873245-Q1
Protections	Thermal warning level (125°C or 137°C)	TDIE_WARN_LEVEL	137°C
Protections	Input overvoltage protection	NA	Enabled

Table 2-6 lists the device settings for interrupts. When an interrupt from an event is unmasked, an interrupt is generated on the nINT pin.

Table 2-6 Interrupt Mask Settings

	Interrupt event	Bit Name	LP873245-Q1
General	PGOOD pin changing active to inactive	PGOOD_INT_MASK	Masked
	Sync clock appears or disappears	SYNC_CLK_MASK	Masked
	Thermal warning	TDIE_WRN_MASK	Unmasked
	Load measurement ready	I_MEAS_MASK	Masked
	Register reset	RESET_REG_MASK	Masked
BUCK0	Buck0 PGood active	BUCK0_PGR_MASK	Masked
	Buck0 PGood inactive	BUCK0_PGF_MASK	Masked
	Buck0 current limit	BUCK0_ILIM_MASK	Masked
BUCK1	Buck1 PGood active	BUCK1_PGR_MASK	Masked
	Buck1 PGood inactive	BUCK1_PGF_MASK	Masked
	Buck1 current limit	BUCK1_ILIM_MASK	Masked