LM2738XMY/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2738XMY/NOPB is a high-efficiency, monolithic step-down switching regulator from Texas Instruments. It integrates a 0.4-ohm N-channel power switch and operates over an input voltage range of 2.7V to 6V. The device supports output currents up to 1.5A with external components. It features adjustable switching frequencies from 500kHz to 2.2MHz, enabling the use of small inductors and capacitors. The regulator includes cycle-by-cycle current limiting, thermal shutdown, and a low-power sleep mode for extended battery life.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-side N-channel power switch eliminates need for external driver
• Adjustable switching frequency allows optimization for size and efficiency
• Low quiescent current in sleep mode extends battery operation time
• Built-in protection mechanisms include thermal shutdown and current limit

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics requiring compact power solutions
• Battery-powered devices needing efficient voltage regulation
• Embedded systems with limited space for passive components
• Industrial control modules operating from single-cell lithium batteries

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix NOPB indicates lead-free/RoHS compliance per manufacturer documentation. Confirm the XMY package marking matches the SOT-23-6 physical dimensions. Ensure the ordering part number aligns with the specific tape-and-reel quantity specified in the official datasheet. Cross-reference the manufacturer's latest revision notes for any pinout or electrical parameter updates before finalizing procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when input voltages remain between 2.7V and 6V and output currents do not exceed 1.5A. Choose based on required switching frequency to balance inductor size against electromagnetic interference. Evaluate thermal performance under maximum load conditions due to integrated switch resistance. Consider the availability of compatible passive components for the chosen frequency setting.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2738 family of synchronous buck converters designed for space-constrained applications. It replaces older discrete solutions by integrating the power switch and control logic into a single small footprint. The family focuses on high efficiency at light loads while maintaining stability across varying input and output voltage ranges.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other LM2738 variants with different package options such as LM2738MM/NOPB. Verify compatibility regarding switching frequency ranges and thermal characteristics. Ensure replacement parts maintain the same input voltage specifications and current handling capabilities.