LP87334DRHDR

Overview

The LP87334DRHDRQ1 is an automotive-grade PMIC featuring two high-current buck converters and two LDOs. It operates within a 2.8 V to 5.5 V input range, delivering up to 3 A per buck output with voltages adjustable from 0.7 V to 3.36 V. The device integrates a sequencer for controlled power-up and down. It supports a switching frequency of 2 MHz and functions reliably across a temperature range of -40°C to +125°C in a 28-pin VQFN package.

Feature Summary

• Dual high-current synchronous buck converters providing independent voltage regulation
• Integrated dual low-dropout linear regulators for noise-sensitive loads
• Built-in power sequencing controller for coordinated startup and shutdown
• Automotive qualification compliant with AEC-Q100 standards

Applications

• Infotainment system power distribution
• Instrument cluster power management
• ADAS sensor node power supply
• Body control module (BCM) voltage regulation

Procurement Notes

Verify the suffix 'Q1' indicates AEC-Q100 automotive qualification. Confirm the 'D' suffix denotes the specific thermal pad or pin configuration variant. Ensure the ordering part number matches the exact package and tape/reel specifications required for your assembly process. Cross-reference the datasheet revision date to ensure compatibility with your design constraints.

Selection Notes

Select this component when dual high-current buck outputs are required alongside isolated LDOs in a compact footprint. The integrated sequencer simplifies board layout by managing rail dependencies automatically. Verify that the 2 MHz switching frequency aligns with EMI requirements and inductor size constraints. Ensure the input voltage range covers the system's nominal and transient supply conditions.

Part Context

This device belongs to the LP8733x family of multi-output PMICs designed for automotive applications. It consolidates multiple discrete regulators into a single chip to reduce solution size and improve reliability. The family shares common interface protocols and mechanical footprints, allowing for flexible design integration across various vehicle electronic architectures.

Replacement Considerations

LP87334ARHDRQ1: Alternative suffix indicating different packaging or testing criteria.

FAQ

Does the LP87334DRHDRQ1 include internal soft-start?

Yes, the device features integrated soft-start capabilities to limit inrush current during power-up.

What is the maximum output voltage for the buck converters?

The maximum adjustable output voltage for each buck converter is 3.36 V.