UC3836DG4

Overview

The UC3836DG4 is a high-efficiency linear regulator controller from the UC3835/6 family, designed for low dropout applications. It operates with an input voltage range of 6V to 40V and supports adjustable output voltages from 2.5V to 35V. The device features a 250mA internal driver capable of sourcing or sinking current, with an external pass element enabling peak output currents up to 2.5A. It includes foldback current limiting that reduces current to less than 0.5A during short circuits. Operating temperatures range from 0°C to +70°C, and it is housed in an SOIC-8 package.

Feature Summary

• Integrated under-voltage lockout and thermal shutdown protection
• Foldback current limiting for robust short-circuit handling
• Remote sense capability for improved load regulation
• Internal current sense resistor simplifies design

Applications

• High current low dropout linear regulators
• Adjustable voltage power supplies
• Fixed 5V regulator designs
• Systems requiring reverse voltage protection

Procurement Notes

Verify the specific suffix 'G4' indicates lead-free compliance and RoHS status as per Texas Instruments documentation. Confirm the SOIC-8 package dimensions match your PCB footprint requirements. Ensure the operating temperature range of 0°C to +70°C aligns with your system's environmental conditions before finalizing procurement.

Selection Notes

Select this component when designing linear regulators requiring high efficiency and precise current limiting. The UC3836DG4 is suitable for adjustable output configurations where remote sensing improves accuracy. Consider the 250mA internal driver limit; use external transistors for loads exceeding this threshold. Verify compatibility with the required input voltage range of 6V to 40V.

Part Context

The UC3836DG4 belongs to the UC1835/6 family of linear controllers manufactured by Texas Instruments. This family includes variants like UC1836 (Military) and UC2836 (Extended Temperature). The DG4 suffix denotes a specific packaging and material configuration within the UC3836D catalog offering, specifically utilizing the SOIC-8 surface mount package.

Replacement Considerations

UC3836D serves as the standard non-green equivalent. UC2836D offers extended temperature operation (-25°C to +85°C). UC1836 provides military-grade qualification. Verify pinout compatibility and thermal performance when substituting.