LP3907SQ-BJXQX/NOPB

Overview

The LP3907SQ-BJXQX/NOPB is a specialized PMIC from the LP3907 series, featuring two synchronous buck converters and two LDOs. It operates within a supply voltage range of 2.8V to 5.5V and supports an operating temperature range of -40°C to +85°C. The device utilizes a 24-WQFN package with exposed pad for surface mount installation. Integrated I2C interface allows for programmable control and monitoring. Quiescent current is specified at 30 µA.

Feature Summary

• Integrates dual high-current synchronous buck converters and dual low-dropout linear regulators in a single compact package.
• Features an I2C-compatible serial interface for flexible configuration and system monitoring capabilities.
• Includes integrated power good indicators and sequencing logic to manage startup and shutdown transitions safely.

Applications

• Advanced application processors requiring multiple regulated voltage rails
• Field Programmable Gate Array (FPGA) core and I/O power distribution
• Generic portable electronic devices needing efficient multi-rail power management

Procurement Notes

Verify the specific suffix BJXQX against the official Texas Instruments datasheet to confirm pin compatibility and electrical characteristics. Ensure the component meets AEC-Q100 qualification requirements if used in automotive contexts. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when a design requires four distinct output voltages derived from a single input source. It is suitable for space-constrained applications where integrating separate regulators would increase board area. Consider the thermal performance of the WQFN package relative to the total load current and ambient conditions.

Part Context

This part belongs to the LP3907 family of quad-output power management ICs designed for mobile and embedded systems. It consolidates switching and linear regulation functions to reduce component count. The SQ designation indicates automotive-grade reliability standards are met.

FAQ

Does the LP3907SQ-BJXQX/NOPB include internal soft-start functionality?

Yes, the device incorporates internal soft-start circuits for both the buck converters and LDOs to limit inrush current during power-up.

What is the maximum switching frequency for the buck converters?

The buck converters operate at a fixed switching frequency of 2.1 MHz, which allows for the use of small external inductors and capacitors.