UC3833N

Overview

The UC3833N is a precision low dropout linear controller manufactured by Unitrode. It operates with a supply voltage range of 4V to 36V and supports output currents up to 1A. The device features an internal reference voltage of 5V with high accuracy. It utilizes a TO-220 package for thermal management and functions within a temperature range of 0°C to 70°C.

Feature Summary

• Precision low dropout linear regulation capability
• Internal 5V reference voltage source
• High current drive capacity up to 1A
• Wide input voltage operating range

Applications

• Offline power supplies
• DC-to-DC converters
• Post-regulators for switching power supplies

Procurement Notes

Verify the manufacturer origin as Unitrode or Texas Instruments, noting that TI acquired Unitrode's assets. Confirm the specific suffix 'N' corresponds to the standard plastic DIP-16 package. Ensure the component meets RoHS compliance requirements if applicable to your assembly process. Check for any specific lot traceability documentation required for quality assurance.

Selection Notes

Select this component when precise linear regulation is required following a switching stage. It is suitable for applications needing a stable 5V reference or regulated output from higher input voltages. Consider the thermal dissipation capabilities of the TO-220 package relative to the expected load current and ambient temperature conditions.

Part Context

This part belongs to the UC38xx family of precision low dropout linear controllers. These devices are designed to provide stable regulation in systems where noise immunity and precise voltage control are critical. The family includes variants with different pinouts and reference voltages to suit various topology requirements.

Replacement Considerations

UC2833N

FAQ

What is the maximum output current?

The UC3833N can support output currents up to 1A.

What is the internal reference voltage?

The device features an internal 5V reference voltage.