LP3907SQ-BJXIX/NOPB

Overview

The LP3907SQ-BJXIX/NOPB is a specialized Power Management Integrated Circuit (PMIC) manufactured by Texas Instruments, originally under the National Semiconductor brand. It integrates four output regulators within a single package: two synchronous buck converters and two Low Dropout (LDO) linear regulators. The device operates with an input voltage range of 2.8V to 5.5V and supports a switching frequency of 2.1MHz. It features an I2C interface for configuration and monitoring. The component is housed in a 24-WQFN (4x4mm) package and is rated for an operating temperature range of -40°C to 85°C.

Feature Summary

• Integrates dual synchronous buck converters and dual LDOs for comprehensive power management
• Features I2C interface for programmable control and system monitoring
• Includes internal sequencing logic for controlled power-up and power-down sequences

Applications

• Advanced application processors
• Field Programmable Gate Arrays (FPGA)
• General-purpose embedded systems requiring multi-rail power

Procurement Notes

Verify the specific suffix 'BJXIX' against official Texas Instruments documentation to confirm pinout and electrical characteristics, as variations exist within the LP3907 family. Ensure the source provides the original manufacturer datasheet rather than distributor summaries. Confirm RoHS compliance status and AEC-Q100 qualification requirements if automotive grade is needed, noting that standard versions may differ from qualified variants.

Selection Notes

Select this component when a compact solution is required to generate multiple voltage rails from a single input source. It is suitable for designs needing both high-efficiency switching regulation for higher current loads and low-noise LDOs for sensitive analog circuits. The I2C capability allows for dynamic adjustment of output voltages, making it ideal for systems with variable power requirements or complex boot sequences.

Part Context

This part belongs to the LP3907 series of PMICs designed for portable and industrial applications. While originally developed by National Semiconductor, the product line is now managed by Texas Instruments following their acquisition. The SQ suffix indicates automotive-grade reliability standards, ensuring robust performance in demanding environments compared to commercial-grade counterparts.

Replacement Considerations

LP3907SQ-PJXIX/NOPB

FAQ

Does the LP3907SQ-BJXIX/NOPB include internal sequencing?

Yes, the device includes internal sequencing logic to manage the power-up and power-down order of its outputs.

What is the maximum switching frequency of the buck converters?

The buck converters operate at a fixed switching frequency of 2.1MHz.