UC3836DTR

Overview

The UC3836DTR is a high-efficiency linear regulator controller from the UC3835/6 family, designed for low dropout applications. It operates with an input supply voltage range of 6V to 40V and provides an adjustable output voltage between 2.5V and 35V using two external resistors. The device features a 250mA output driver capable of sourcing or sinking current, along with an internal current sense resistor that enables accurate 2.5A peak current limiting with foldback protection. It includes under-voltage lockout, thermal shutdown, and reverse voltage protection.

Feature Summary

• Complete control architecture for high-current, low-dropout linear regulators
• Integrated 2.5A current limiting with foldback functionality
• Internal current sense resistor simplifies design requirements
• Remote sense capability for improved load regulation

Applications

• Low cost, low dropout linear regulator designs
• High efficiency power supply systems
• Applications requiring precise current limiting and thermal protection

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type, temperature range, and moisture sensitivity level. Ensure compatibility with surface mount assembly processes and check for RoHS compliance status in the latest packaging addendum before procurement.

Selection Notes

Select this component when designing adjustable linear regulators requiring robust protection features. Consider the SOIC-8 package constraints and verify that the external pass element can handle the required power dissipation. Evaluate the need for remote sensing to optimize performance under varying load conditions.

Part Context

This part belongs to the UC1835/6 family of linear controllers optimized for low-cost, low-dropout regulator designs. The UC38xx series denotes the commercial temperature grade variant. It serves as a core control IC, relying on external pass transistors to achieve high output currents while maintaining tight regulation and protection standards.

Replacement Considerations

UC3836D is a direct equivalent offering identical electrical characteristics in a tube package.