LM3100MHX/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3100MHX/NOPB is a synchronous step-down switching regulator from Texas Instruments, operating within the SIMPLE SWITCHER family. It accepts an input voltage range of 4.5V to 36V and provides a single adjustable output ranging from 0.8V to 7.2V. The device delivers a maximum continuous output current of 1.5A with a fixed switching frequency of up to 1MHz. Packaged in a 20-pin PowerTSSOP with an exposed thermal pad, it supports surface-mount installation and functions reliably across a junction temperature range of -40°C to 125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates high-side and low-side N-channel power MOSFETs for synchronous rectification to maximize efficiency.
• Features adaptive constant on-time control architecture that simplifies loop compensation and reduces noise sensitivity.
• Includes programmable soft-start capability to manage inrush current during startup sequences.
• Provides comprehensive protection mechanisms including thermal shutdown, cycle-by-cycle current limiting, and undervoltage lockout.

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems requiring wide input voltage ranges
• Power supply stages for industrial equipment and instrumentation
• Battery-powered devices utilizing boost converter pre-regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'NOPB' confirms lead-free and RoHS compliance status as per manufacturer documentation. Confirm the 'X' designation indicates tape-and-reel packaging rather than tube configuration. Ensure the 20-PowerTSSOP footprint matches the target PCB layout dimensions. Validate that the thermal pad connection requirements align with the design's heat dissipation strategy.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is required for converting higher voltages down to lower logic or analog levels. The integrated MOSFETs eliminate the need for external Schottky diodes, reducing bill of materials count. Consider the 1MHz switching frequency for minimizing passive component size while balancing electromagnetic interference constraints against lower frequency alternatives.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM3100 series of non-isolated DC-DC converters designed for space-constrained applications. It utilizes Texas Instruments' SIMPLE SWITCHER technology to provide a complete power solution in a small outline package. The device is distinct from controller-only parts by integrating all necessary power switches internally.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-compatible replacements within the same family include the LM3100MH/NOPB variant which differs primarily in packaging format. Verify electrical specifications match exactly before substituting other buck regulators from different manufacturers due to potential differences in control topology and thermal characteristics.