UC2836DTR

Overview

The UC2836DTR is a high-efficiency linear regulator controller from Texas Instruments, designed for low dropout applications. It features an adjustable output voltage range of 2.5V to 35V and provides accurate 2.5A current limiting with foldback protection. The device includes internal current sensing, remote sense capability, under-voltage lockout, reverse voltage protection, and thermal shutdown. Operating within a temperature range of -25°C to +85°C, it utilizes an SOIC-8 surface-mount package.

Feature Summary

• Complete control architecture for high-current, low-dropout linear regulators using external pass elements
• Integrated precision reference and error amplifier with adjustable output voltage setting via external resistors
• Robust protection mechanisms including under-voltage lockout, thermal shutdown, and reverse voltage protection
• Accurate 2.5A peak current limiting with foldback functionality to minimize stress during short-circuit conditions

Applications

• Design of low-cost, low-dropout linear power supplies
• High-efficiency regulator controllers requiring precise load regulation
• Systems needing adjustable output voltages between 2.5V and 35V
• Applications requiring built-in thermal and short-circuit protection

Procurement Notes

Verify the specific ordering suffix matches the required package type and moisture sensitivity level. Confirm that the device status is active for new designs. Ensure compliance with RoHS and environmental specifications as defined in the packaging addendum. Check lead finish options and reflow soldering temperature profiles against assembly capabilities.

Selection Notes

Select this component when designing linear regulators that require adjustable output voltages up to 35V. It is suitable for applications demanding high efficiency with dropout voltages less than 0.5V. Consider the internal 2.5A current limit and foldback feature for robust short-circuit protection. Ensure the external pass element can handle the required current and power dissipation.

Part Context

The UC2836DTR belongs to the UC1835/6 family of linear controllers, optimized for low-cost, low-dropout linear regulator designs. It shares functional similarities with the UC2835 (fixed 5V output) but offers adjustable output flexibility. The device integrates a high-gain error amplifier, a 250mA output driver, and a precision reference within an 8-pin mini-DIP or SOIC package.

Replacement Considerations

UC2836D