LMR66430R3RXBRNEP

Voltage Regulators - DC DC Switching Regulators Overview

The LMR66430R3RXBRNEP is a radiation-tolerant synchronous step-down converter from Texas Instruments, designed for space applications. It operates with an input voltage range of 3 V to 36 V and delivers up to 3 A of output current. The device integrates a 2.2 MHz fixed switching frequency and supports adjustable frequencies. Key features include integrated bootstrap diodes, programmable soft-start, and cycle-by-cycle current limit protection. It is housed in a compact WSON package suitable for high-density designs.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Radiation tolerant design qualified for space environments
• Integrated synchronous rectification with internal bootstrap diode
• Fixed 2.2 MHz switching frequency with adjustable options
• Built-in cycle-by-cycle current limit and thermal shutdown

Voltage Regulators - DC DC Switching Regulators Applications

• Spacecraft power distribution systems
• Satellite onboard electronics
• High-reliability industrial converters

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix NEP indicates the enhanced product qualification status. Confirm radiation tolerance specifications against mission requirements. Check for availability of supporting evaluation modules such as the LMR66430NEP-EVM. Ensure component authenticity through authorized channels.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when radiation hardness is required for buck conversion. Compare input voltage ranges against system rails. Evaluate thermal performance within the WSON package. Consider the fixed frequency operation for EMI filtering needs.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LMR66430 family of radiation-hardened DC/DC converters. It shares architectural similarities with standard commercial parts but includes modifications for space reliability. The EP designation signifies enhanced product processing for critical applications.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct replacements are limited due to the specialized radiation-hardened nature. Verify if standard LMR66430 variants meet environmental constraints. Consult manufacturer documentation for approved alternate part numbers.