1 Features
• AEC-Q100 Qualified with the following results:
– Input voltage: 2.8 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: 0.3 V to 3.34 V (0.3 V to 1.9 V
for multi-phase outputs)
– Maximum output current: 5 A per phase, up to
20 A with 4-phase configuration
– Programmable output voltage slew-rate: 0.5
mV/μs to 33 mV/μs
– Switching frequency: 2.2 MHz or 4.4 MHz
• 10 configurable general purpose I/O (GPIO)
• SPMI interface for multi-PMIC synchronization
• Input overvoltage monitor (OVP) and undervoltage
lockout (UVLO)

2 Applications
• Advanced driver assistance systems (ADAS)
• Front camera
• Surround view system ECU
• Long range radar
• Sensor fusion
• Domain controller

3 Description
The LP8764-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 stepdown
DC/DC converter cores, that are configurable
for five different phase configurations from one 4-
phase output to four 1-phase outputs. The device
settings can be changed by I2C-compatible serial
interface or by a SPI serial interface.
The automatic PFM/PWM (AUTO mode) operation
together with the automatic phase adding and phase
shedding maximizes efficiency over a wide outputcurrent
range. The LP8764-Q1 device supports
remote differential voltage sensing for multiphase
outputs to compensate IR drop between the regulator
output and the point-of-load (POL) that improves the
accuracy of the output voltage. The switching clock
can be forced to PWM mode and the phases are
interleaved. The switching can be synchronized to
an external clock and spread-spectrum mode can be
enabled to minimize the disturbances.