UC3836NG4

Overview

The UC3836NG4 is a high-efficiency linear regulator controller from the UC1835/6 family, 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 an internal current sense resistor, remote sense capability, under-voltage lockout, thermal shutdown, and reverse voltage protection. Operating within a temperature range of 0°C to +70°C, it utilizes an external pass element to achieve dropout voltages below 0.5V.

Feature Summary

• Provides complete control for high-current, low-dropout linear regulators using an external pass element.
• Features accurate 2.5A peak current limiting with foldback functionality to protect against short circuits.
• Includes integrated under-voltage lockout, thermal shutdown, and reverse voltage protection mechanisms.
• Supports remote sensing for improved load regulation accuracy.

Applications

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

Procurement Notes

Verify component status as NRND (Not Recommended for New Designs) in official documentation. Confirm RoHS compliance and lead finish specifications via the latest package addendum. Ensure design compatibility with the specified operating temperature range and package options before procurement.

Selection Notes

Select this controller for adjustable output linear regulator designs requiring robust protection features. Consider the UC3836N variant for equivalent performance in PDIP-8 packaging. Evaluate external pass transistor requirements to meet specific current and thermal dissipation needs.

Part Context

Part of the UC1835/6 family of linear controllers optimized for low-cost, low-dropout regulator designs. Manufactured by Texas Instruments, these devices integrate a high-gain error amplifier, precision reference, and driver stage to simplify linear power supply implementation.

Replacement Considerations

UC3836N is a direct alternative within the same series offering identical electrical characteristics in a PDIP-8 package.