LMR33630ARNXT

Voltage Regulators - DC DC Switching Regulators Overview

The LMR33630ARNXT is a synchronous step-down voltage converter from the SIMPLE SWITCHER family. It operates with an input voltage range of 3.8 V to 36 V and delivers up to 3 A output current. The adjustable output voltage spans from 1 V to 24 V. Key electrical parameters include a quiescent current of 25 uA and a fixed switching frequency of 400 kHz. The device supports operation within a junction temperature range of -40°C to +125°C and utilizes a 12-VQFN-HR package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification for high efficiency in buck topology applications
• Wide input voltage capability supporting various power supply sources
• Compact surface-mount packaging designed for space-constrained designs

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial point-of-load regulation
• Embedded system power distribution
• General-purpose DC-DC conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific ordering suffix against official Texas Instruments documentation to ensure correct package type and tape/reel specifications. Confirm that the component meets required environmental standards such as RoHS compliance before integration into final products. Cross-reference datasheet revisions to align with design requirements.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this regulator when a fixed 400 kHz switching frequency is suitable for the application's passive component constraints. Ensure the input voltage does not exceed 36 V and the load current remains within the 3 A limit. Consider thermal performance in the VQFN-HR package relative to the expected ambient conditions and PCB copper area.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LMR33630 series of SIMPLE SWITCHER regulators. It shares core architecture with variants like LMR33630BDDA and LMR33630CDDAR, differing primarily in package style and switching frequency options. The ARNXT variant specifically provides the 12-pin QFN form factor with the standard 400 kHz frequency setting.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LMR33630BDDA offers similar electrical performance but uses an SO-PowerPAD-8 package and operates at 1.4 MHz. LMR33630CDDAR provides a 2.4 MHz switching frequency in the same SO-PowerPAD-8 package. Direct pin-to-pin replacement is not possible due to package differences; redesign may be required.