LP3907SQ-BJYQX/NOPB

Overview

The LP3907SQ-BJYQX/NOPB is a specialized power management integrated circuit (PMIC) manufactured by Texas Instruments, formerly National Semiconductor. It integrates two high-current synchronous step-down DC/DC converters and two low-dropout (LDO) linear regulators within a single package. The device features an I2C-compatible interface for programmable control of output voltages and operational modes. Designed for automotive applications, it operates over an extended temperature range of -40°C to +125°C and complies with AEC-Q100 standards. The unit utilizes a 24-pin WQFN package with exposed thermal pad.

Feature Summary

• Integrates dual high-current buck converters and dual LDOs in a compact footprint
• Features I2C-compatible digital interface for voltage regulation and mode control
• Supports synchronized switching frequencies up to 2.1 MHz for reduced component size
• Includes comprehensive protection mechanisms against overcurrent and thermal overload

Applications

• Automotive infotainment systems requiring multiple regulated rails
• Advanced application processors in vehicle electronic control units
• FPGA power supply architectures in industrial automotive modules
• General purpose automotive electronics needing compact PMIC solutions

Procurement Notes

Verify the manufacturer designation carefully, as National Semiconductor was acquired by Texas Instruments. Ensure the specific suffix matches the required pin configuration and thermal characteristics. Confirm AEC-Q100 qualification status if deploying in safety-critical automotive environments. Cross-reference the exact part number with official TI documentation to avoid substitution errors due to legacy naming conventions.

Selection Notes

Select this component when designing automotive systems that require simultaneous high-current switching regulation and precise analog rail generation. The I2C interface allows dynamic adjustment of output parameters, making it suitable for complex power sequencing requirements. Evaluate the thermal performance of the 24-WQFN package relative to the expected load current and ambient operating conditions to ensure reliable long-term operation.

Part Context

This component belongs to the LP3907 family of multi-output power management ICs designed primarily for the automotive sector. The series is characterized by its integration of switching and linear regulation technologies to optimize efficiency and noise performance. As a successor to earlier discrete solutions, it simplifies board layout and reduces the overall bill of materials for complex electronic control units.

Replacement Considerations

LP3907QSQ-JXIP/NOPB

FAQ

Does the LP3907 support I2C communication?

Yes, the device includes an I2C-compatible interface that allows for digital control of output voltages and operational modes.

What is the operating temperature range?

The component is rated for an extended automotive temperature range from -40°C to +125°C.