LP3907SQ-TJXIP/NOPB

Overview

The LP3907SQ-TJXIP/NOPB is a Texas Instruments PMIC featuring two synchronous buck converters and two LDOs. It supports an input voltage range of 2.8V to 5.5V with a switching frequency of 2.1MHz. The buck outputs provide up to 1A and 600mA, while the LDOs deliver 300mA each. Operating temperatures span -40°C to 125°C. It uses a 24-WQFN package and includes I2C control, sequencing, and low quiescent current of 30µA for efficient power management in automotive and industrial applications.

Feature Summary

• Integrates dual high-current synchronous step-down DC/DC converters and dual linear regulators within a single compact package.
• Features an I2C-compatible interface for programmable control, monitoring, and flexible output configuration.
• Includes built-in power-good sequencing and monitoring functions to ensure reliable system startup and operation.
• Optimized for low quiescent current consumption to enhance efficiency during standby and active modes.

Applications

• Automotive infotainment systems
• Advanced application processors
• FPGA power supply architectures
• Industrial control modules

Procurement Notes

Verify the specific suffix TJXIP against the official datasheet to confirm package type and temperature grade. Ensure compatibility with I2C address requirements and thermal design constraints for the WQFN-24 footprint. Cross-reference the AEC-Q100 qualification status if automotive reliability is required. Confirm RoHS compliance and lead-free specifications prior to ordering.

Selection Notes

Select this component when a combined solution for high-current buck regulation and precise LDO filtering is needed. It is suitable for designs requiring I2C configurability and integrated sequencing. Consider the 2.1MHz switching frequency for EMI performance and inductor size trade-offs. Evaluate the 24-WQFN thermal pad requirements for adequate heat dissipation in enclosed environments.

Part Context

This part belongs to the LP3907 family of multi-output power management ICs from Texas Instruments. It complements similar devices like the LP3906 by offering additional output flexibility through integrated LDOs alongside buck converters. The series is designed for complex digital systems requiring multiple regulated rails from a single input source.

Replacement Considerations

LP3907QSQ-JXIP/NOPB: Similar quad-output topology with automotive grade and 24-WQFN package. LP3907TLX-JJ11/NOPB: Alternative package (DSBGA) with comparable dual buck and dual LDO functionality. Verify pinout and thermal characteristics before substitution.