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SNVU663A June 2019 – May 2021 LP87524-Q1 , LP87524B-Q1 , LP87524J-Q1 , LP87524P-Q1

3.1 Default OTP Configurations

All LP87524B/J/P-Q1 PMIC resource settings are stored in the form of volatile registers. These settings define, for example, buck output voltages, GPIO functionality, and power-up and power-down sequences. Refer to the datasheet for a full list of the setting registers.

Each device has predefined values stored in OTP which control the default configuration of the device. The tables in this section list the OTP-programmed values for each device.

Table 3-1 summarizes the main differences between the three OTP versions. Table 3-2 shows LP87524B-Q1, Table 3-8 shows LP87524J-Q1 and Table 3-14 shows LP87524P-Q1 settings for BUCK0, BUCK1, BUCK2 and BUCK3. Maximum allowed slew-rate for BUCKx depends on the output capacitance. Refer to the device datasheets for output capacitance boundary conditions.

Table 3-1 Differences between LP87524B/J/P-Q1 devices

Description	Bit name	LP87524B-Q1	LP87524J-Q1	LP87524P-Q1
Output voltage	BUCK0_VSET	3300 mV	3300 mV	1000 mV
	BUCK1_VSET	1200 mV	1200 mV	1200 mV
	BUCK2_VSET	1800 mV	1000 mV	1000 mV
	BUCK3_VSET	2300 mV	1800 mV	1800 mV
Peak current limit	ILIM0	2.5 A	2.5 A	4 A
	ILIM1	2.5 A	2.5 A	2.5 A
	ILIM2	5 A	5 A	4 A
	ILIM3	3.5 A	3.5 A	3.5 A
Force PWM mode or auto mode	BUCK0_FPWM	Auto	Auto	Force PWM
	BUCK1_FPWM	Auto	Auto	Force PWM
	BUCK2_FPWM	Force PWM	Force PWM	Force PWM
	BUCK3_FPWM	Force PWM	Force PWM	Force PWM
Startup and shutdown delay range	DOUBLE_DELAY, HALF_DELAY	0 ... 15 ms	0 ... 15 ms	0 ... 4.8 ms
Buck Startup Delays	BUCK0_STARTUP_DELAY	5 ms	5 ms	0.96 ms
	BUCK1_STARTUP_DELAY	5 ms	5 ms	2.24 ms
	BUCK2_STARTUP_DELAY	2 ms	2 ms	1.6 ms
	BUCK3_STARTUP_DELAY	0 ms	0 ms	0 ms
Buck Shutdown Delays	BUCK0_SHUTDOWN_DELAY	0 ms	0 ms	0.32 ms
	BUCK1_SHUTDOWN_DELAY	0 ms	0 ms	0.32 ms
	BUCK2_SHUTDOWN_DELAY	0 ms	0 ms	0.32 ms
	BUCK3_SHUTDOWN_DELAY	1 ms	1 ms	0.32 ms
GPIO2/3 Startup Delays	GPIO2_STARTUP_DELAY	5 ms	5 ms	2.88 ms
GPIO2/3 Startup Delays	GPIO3_STARTUP_DELAY	3 ms	3 ms	4.16 ms
GPIO2/3 Shutdown Delay	GPIO2_SHUTDOWN_DELAY	0 ms	0 ms	0.32 ms
GPIO2/3 Shutdown Delay	GPIO3_SHUTDOWN_DELAY	0 ms	0 ms	0 ms
GPIO output type	GPIO1_OD	Push-pull	Push-pull	Open drain
	GPIO2_OD	Open drain	Open drain	Open drain
	GPIO3_OD	Open drain	Open drain	Open drain
Input or output in GPIO mode	GPIO1_DIR	Input	Input	Output
	GPIO2_DIR	Output	Output	Output
	GPIO3_DIR	Output	Output	Output
Thermal warning level (125°C or 137°C)	TDIE_WARN_LEVEL	137°C	137°C	125°C