UC2836DTRG4

Overview

The UC2836DTRG4 is a low dropout linear regulator controller from Texas Instruments, designed for high-efficiency applications. It features an adjustable output voltage range of 2.5V to 35V and supports a driver output current up to 600mA. The device includes internal current limiting with foldback protection, operating within a supply voltage range of 6V to 40V. It utilizes an SOIC-8 surface-mount package and operates across a temperature range of -25°C to +85°C.

Feature Summary

• Provides complete control for high-current, low-dropout linear regulators using an external pass element.
• Features accurate current limiting with foldback capability to protect against short circuits.
• Includes under-voltage lockout and thermal shutdown protection for reliable operation.
• Supports remote sense connections to improve load regulation accuracy.

Applications

• Designing low-cost, low dropout linear power supplies
• High efficiency regulator controller circuits
• Systems requiring adjustable output voltage regulation

Procurement Notes

Verify the specific ordering suffix 'G4' indicates lead-free and RoHS compliance status as defined by manufacturer standards. Confirm the tape and reel packaging quantity matches system requirements. Ensure the SOIC-8 package dimensions align with PCB layout constraints. Check for any moisture sensitivity level restrictions during storage and soldering processes.

Selection Notes

Select this component when an adjustable output voltage between 2.5V and 35V is required. It is suitable for designs needing high peak output current with integrated foldback current limiting. Consider the SOIC-8 package for surface mount assembly needs. Verify that the input voltage range of 6V to 40V meets the system's power supply specifications.

Part Context

The UC2836DTRG4 belongs to the UC1835/6 family of linear controllers optimized for low dropout performance. It serves as the adjustable version counterpart to fixed voltage variants. The device integrates a precision reference, error amplifier, and driver stage to manage external pass transistors efficiently in linear regulator topologies.

Replacement Considerations

UC2836D

FAQ

What is the function of the foldback current limit?

The foldback current limit reduces the output current significantly below the peak limit (to less than 0.5A) during a short circuit condition to protect the driver device and external components.

How is the output voltage determined for the UC2836?

The output voltage is adjustable from 2.5V to 35V and is set using two external resistors connected to the VOUT Sense pin.