UC3833DW

Overview

The UC3833DW is a precision low dropout linear controller manufactured by Texas Instruments, housed in a 16-pin SOIC (DW) package. It operates within an input voltage range of 4.5 V to 36 V and features a highly accurate 2 V reference with ±1% tolerance. The device includes an error amplifier, under-voltage lockout, and a high-current driver capable of sourcing or sinking up to 400 mA. It supports duty-ratio current limiting for peak load capability and fault protection.

Feature Summary

• Incorporates a precision 1% internal reference voltage for stable regulation
• Features duty-ratio current limiting to manage peak loads and average power dissipation
• Includes under-voltage lockout and thermal shutdown for safe operation
• Provides a high-current driver with both source and sink outputs

Applications

• Designing very low dropout linear regulators
• Power supply systems requiring peak load accommodation
• Applications needing short circuit protection without foldback current limiting

Procurement Notes

Verify the specific suffix against the Package Option Addendum to confirm operating temperature range and moisture sensitivity level. Ensure the procurement matches the required commercial or industrial grade specifications defined in the datasheet electrical characteristics section.

Selection Notes

Select this component when designing low dropout regulators that require precise voltage referencing and robust fault protection. Consider the UC2832 series if additional versatility such as adjustable current limit or logic-level disable inputs are necessary for the application design.

Part Context

This part belongs to the UCx832/3 family of precision linear controllers from Texas Instruments. The UC3833 variant provides basic control functions in a cost-effective configuration, while the broader family includes variants like the UC2832 with extended pinouts for enhanced programmability and feature sets.

Replacement Considerations

UC2833DW serves as the industrial temperature grade equivalent.