1 Features

? AEC-Q100 Qualified with the following results:

– Input voltage: 3.0 V to 5.5 V

– Device temperature grade 1: –40°C to +125°C

ambient operating temperature range

– Device HBM ESD classification Level 2

– Device CDM ESD classification Level C4B

? Functional Safety-Compliant

– Developed for functional safety applications

– Documentation available to aid ISO 26262

system design up to ASIL-D

– Documentation available to aid IEC 61508

system design up to SIL-3

– Systematic capability up to ASIL-D

– Hardware integrity up to ASIL-D

– Windowed voltage and over-current monitors

– Watchdog with selectable trigger / Q&A mode

– Level or PWM error signal monitoring (ESM)

– Thermal monitoring with high temperature

warning and thermal shutdown

– Bit-integrity (CRC) error detection on

configuration registers and non-volatile memory

? 4 high-efficiency step-down DC/DC converters:

– Output voltage: 0.9 V to 1.9 V

– Maximum output current: 4/3/3/2 A

– Programmable output voltage slew-rate: 0.5

mV/μs to 33 mV/μs

– Switching frequency: 8.8 MHz

? 10 configurable general purpose I/O (GPIO)

? SPMI interface for multi-PMIC synchronization

? Input overvoltage monitor (OVP) and undervoltage

lockout (UVLO)

2 Applications

? Imaging radar using cascaded configuration

? Long range radar

? Radar module without processing

3 Description

The LP876242-Q1 device is designed to meet

the power management requirements of the latest

processors and platforms in various safety-relevant

automotive and industrial applications. The device has

four step-down DC/DC converter cores, generating

four 1-phase outputs. The device settings can be

changed by I2C-compatible serial interface or by a

SPI serial interface.

The switching clock is forced to PWM mode and

the phases are interleaved. The switching can

be synchronized to an external clock and spreadspectrum

mode can be enabled to minimize the

disturbances.

The LP876242-Q1 device includes protection and

diagnostic mechanisms such as register and interface

CRC, short-circuit protection, thermal monitoring, and

shutdown. The LP876242-Q1 device can notify the

processor of these events through the interrupt

handler, allowing the processor to take action in

response.