1 Features
• AEC-Q100 Qualified for Automotive Applications:
– Device Temperature Grade 1: –40°C to
+125°C, TA
• Functional Safety Quality-Managed
– Documentation Available to Aid Functional
Safety System Design
– Two Inputs for External Voltage Monitoring
– Two Programmable Power-Good Signals
– Dedicated Reference Voltage for Diagnostics
– Window Watchdog with Reset Output
– Output Short-Circuit and Overload Protection
– Overtemperature Warning and Protection
– Overvoltage Protection (OVP) and
Undervoltage Lockout (UVLO)
• Two High-Efficiency Step-Down DC/DC
converters:
– Maximum Output Current 3.5 A
– 2-MHz, 3-MHz, or 4-MHz Switching Frequency
– Auto PWM/PFM and Forced-PWM Operations
– Output Voltage = 0.7 V to 3.36 V
• 5-V Boost Converter
– Maximum Output Current 600 mA
• External Clock Input to Synchronize Switching
• Spread-Spectrum Modulation
• Programmable Start-up and Shutdown Delays and
Sequencing with Enable Signal
• Configurable General Purpose Outputs (GPOs)
• I2C-Compatible Interface Supporting Standard
(100 kHz), Fast (400 kHz), Fast+ (1 MHz), and
High-Speed (3.4 MHz) Modes
• Interrupt Function with Programmable Masking

2 Applications
• Automotive Radar
• Automotive Camera
• Automotive Sensor Fusion
• Industrial Radar
• Building Automation

3 Description
The LP87702-Q1 helps meet the power management
requirements of the latest platforms, particularly in
automotive radar and camera and industrial radar
applications. The device contains two step-down
DC/DC converters, and a 5-V boost converter
to support safety critical applications. The device
integrates two voltage monitoring inputs for external
power supplies and a window watchdog.
The automatic PWM/PFM (AUTO mode) operation
gives high efficiency over a wide output current range
for buck converters. The LP87702-Q1 uses remote
voltage sensing to compensate IR drop between the
converter output and the point-of-load, thus improving
the accuracy of the output voltage.