LM27341MY/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM27341MY/NOPB is a wide input range synchronous buck regulator manufactured by Texas Instruments, formerly National Semiconductor. It delivers a continuous output current of 1.5A with an adjustable output voltage range from 1V to 18V. The device operates at a fixed switching frequency of 2MHz and supports frequency synchronization. It accepts an input voltage between 3V and 20V. The component is housed in a 10-pin HVSSOP (DGQ) package with a PowerPAD for thermal management. It functions as a positive step-down converter with a single output configuration.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification for high efficiency
• Frequency synchronization capability for noise alignment
• Wide input voltage range supporting diverse power sources
• Adjustable output voltage for flexible system design

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial control systems requiring stable DC-DC conversion
• Portable equipment powered by battery or adapter sources
• Embedded systems utilizing microcontrollers and DSPs
• Communication infrastructure power distribution networks

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer origin, as the part was originally developed by National Semiconductor before its acquisition by Texas Instruments. Ensure the suffix /NOPB indicates lead-free and RoHS compliance. Confirm the package type matches the required PCB footprint, specifically the 10-pin HVSSOP with exposed pad. Cross-reference the datasheet revision to ensure compatibility with current design specifications and thermal requirements.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is needed for converting higher input voltages down to lower logic levels. The 2MHz switching frequency allows for smaller external inductors and capacitors compared to lower-frequency alternatives. Consider the thermal performance of the HVSSOP package under maximum load conditions. Verify that the required output voltage falls within the 1V to 18V adjustable range and that the input supply stays within the 3V to 20V operational limits.

Voltage Regulators - DC DC Switching Regulators Part Context

This regulator belongs to the LM27341 family of wide input range buck converters. The 'MY' designation typically refers to the specific package variant, while '/NOPB' denotes non-halogenated and lead-free construction. The device integrates the high-side and low-side MOSFETs into a single monolithic IC, reducing the component count required for implementation. It is designed for applications demanding high efficiency and small board space.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Compatible substitutes include LM27341MX/NOPB and LM27341QMY/NOPB. The Q-series variant offers automotive qualification under AEC-Q100 standards. Other members of the LM27341 family may provide similar electrical characteristics but differ in package options or temperature ratings. Verify pinout compatibility and thermal dissipation capabilities before substitution.