LM2734ZQSDE/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2734ZQSDE/NOPB is a high-efficiency, synchronous step-down DC-DC converter from Texas Instruments. It integrates two N-channel power MOSFETs and operates with an input voltage range of 2.7V to 5.5V. The device delivers up to 1.5A output current with a fixed switching frequency of 2.2MHz. Key electrical parameters include a quiescent current of 100µA in active mode and 1.5µA in shutdown. It features adjustable soft-start and precise output voltage regulation via external resistors.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification for enhanced efficiency
• Fixed high-frequency operation reduces passive component size
• Adjustable soft-start limits inrush current
• Thermal shutdown protection ensures reliability

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronics powered by single-cell lithium batteries
• Wireless communication modules requiring low noise
• Embedded systems with strict power budget constraints
• Industrial control boards needing compact power solutions

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix NOPB indicates lead-free status and RoHS compliance. Confirm package type ZQFN matches PCB footprint requirements. Check manufacturer datasheet for exact thermal pad dimensions and soldering recommendations. Ensure ordering code matches specific temperature grade if required for industrial applications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when input voltage remains between 2.7V and 5.5V. Choose based on need for integrated MOSFETs to save board space. Consider the 2.2MHz frequency for smaller inductors. Evaluate load current needs against the 1.5A continuous rating. Verify compatibility with desired output voltage settings using external resistor dividers.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2734 family of synchronous buck converters. It shares core architecture with other variants differing mainly in package or temperature range. The ZQSDE designation specifies the small outline quad flat no-lead package variant. NOPB confirms environmental compliance without halogenated flame retardants.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include LM2734XMQX/NOPB for QFN package alternative. LM2734MMX/NOPB offers MSOP package option. Verify pinout compatibility before substitution. Check thermal performance differences between packages. Confirm switching frequency and control interface remain identical.