LP3907SQ-VRZX/NOPB

Overview

The LP3907SQ-VRZX/NOPB is a Power Management Integrated Circuit (PMIC) from Texas Instruments, featuring two high-current step-down DC/DC converters and two linear regulators. It operates with an input voltage range of 2.8 V to 5.5 V and includes an I2C-compatible interface for configuration. The device utilizes pulse width modulation and PFM techniques, supporting switching frequencies up to 2.1 MHz. It is housed in a 24-WQFN package with dimensions of 4 mm x 4 mm and is rated for operation between -40°C and 85°C.

Feature Summary

• Integrates dual synchronous buck converters and dual low-dropout linear regulators within a single compact package.
• Features an I2C-compatible serial interface for dynamic voltage scaling and system control.
• Supports multiple conversion modes including Pulse Width Modulation (PWM) and Pulse Frequency Modulation (PFM) for optimized efficiency across load ranges.

Applications

• Power management for hard disk drives
• Portable electronic devices requiring multi-rail power supplies
• Embedded systems with I2C-controlled voltage regulation needs

Procurement Notes

Verify the specific suffix VRZX against the manufacturer's current datasheet to confirm tape-and-reel packaging specifications. Ensure the operating temperature grade matches the application requirements, as variants exist for different thermal ranges. Cross-reference the RoHS compliance status and lead-free designation (NOPB) with the latest environmental declarations before finalizing procurement orders.

Selection Notes

Select this component when a design requires four independent regulated outputs from a single IC to minimize board space. It is suitable for applications needing both high-current switching regulation for digital logic and precise LDO regulation for analog circuits. The I2C interface allows for flexible voltage adjustment, making it ideal for systems requiring dynamic power management capabilities.

Part Context

This part belongs to the LP3907 family of PMICs designed for complex power architectures. It consolidates multiple regulator functions typically found in discrete solutions. The SQ suffix indicates automotive-grade qualification standards, while the VRZX suffix specifies the specific packaging and reel configuration provided by Texas Instruments.

Replacement Considerations

Check for LP3907SQ-PJXIX/NOPB or LP3907QSQ-JXIP/NOPB as potential functional equivalents within the same family. Verify pin-to-pin compatibility and electrical parameter alignment before substitution. Confirm that the alternative variant meets the specific temperature and packaging requirements of the target design.