LM26400YMH/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM26400YMH/NOPB is a dual synchronous step-down DC-DC switching regulator manufactured by Texas Instruments, formerly National Semiconductor. It integrates two independent buck converters in a single package, each capable of delivering up to 2A of output current. The device operates with an input voltage range from 3V to 38V and provides adjustable output voltages starting from 1.25V. It utilizes a fixed 500kHz switching frequency to minimize external component size while maintaining high efficiency across various load conditions.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Dual independent synchronous buck converter topology for space-constrained designs
• Integrated power switches eliminate the need for external diodes or MOSFETs
• Fixed 500kHz switching frequency reduces passive component footprint
• Adjustable output voltage via external resistor network

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Power supply stages for industrial control equipment
• Voltage conversion for communication infrastructure modules
• Battery-powered devices requiring efficient dual-rail generation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer designation as Texas Instruments, which acquired National Semiconductor. Confirm the specific suffix 'YMH' corresponds to the 16-pin HTSSOP package variant. Ensure RoHS compliance documentation aligns with the NOPB designation. Cross-reference the datasheet revision date to ensure compatibility with current design specifications and pinout definitions.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when dual isolated or non-isolated low-voltage rails are required from a higher voltage bus. The dual-channel architecture simplifies board layout compared to using two separate regulators. Consider the thermal performance of the HTSSOP package under maximum load conditions. Verify that the 500kHz frequency does not interfere with sensitive RF circuits in the application environment.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM264xx series of dual synchronous buck regulators. It shares functional similarities with the LM26401 but differs in switching frequency and specific electrical characteristics. The series is designed for applications requiring compact power solutions with high efficiency. The NOPB suffix indicates lead-free construction compliant with environmental directives.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed substitute part numbers include LM26400YSD/NOPB and LM26400YSDX/NOPB. These variants offer identical electrical performance but utilize different package types such as WSON. Verify pin-to-pin compatibility and thermal dissipation requirements before substituting.