UC3844ADTR

Power Supply Controllers, Monitors Overview

The UC3844ADTR is a current-mode PWM controller manufactured by Texas Instruments, designed for high-performance DC-DC converter applications. It operates within a supply voltage range of 10V to 36V and supports switching frequencies up to 500 kHz. The device features a maximum duty cycle of 50% and provides a peak output drive current of 1A. It is housed in a 14-pin SOIC package with an operating temperature range of 0°C to +70°C.

Power Supply Controllers, Monitors Feature Summary

• Implements current-mode control architecture for rapid line transient response
• Includes integrated oscillator with external timing resistor and capacitor synchronization
• Features on-chip thermal shutdown and undervoltage lockout protection circuits

Power Supply Controllers, Monitors Applications

• Flyback converters
• Forward converters
• Boost converters
• Buck converters

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix 'ADTR' against the manufacturer's official datasheet to confirm the commercial temperature grade and tape-and-reel packaging configuration. Ensure compatibility with the target PCB footprint for the SOIC-14 package before finalizing procurement orders.

Power Supply Controllers, Monitors Selection Notes

Select this component when designing isolated or non-isolated power supplies requiring precise current-mode regulation. It is suitable for applications needing a fixed 50% maximum duty cycle limit. Consider alternative variants if industrial temperature ranges or higher frequency operation are required.

Power Supply Controllers, Monitors Part Context

This part belongs to the UC384x family of current-mode PWM controllers from Texas Instruments. These devices are widely used in general-purpose power supply designs due to their robust protection features and ease of implementation with standard passive components.

Power Supply Controllers, Monitors Replacement Considerations

Direct pin-compatible substitutes include the TL3844 series from Texas Instruments. Verify electrical specifications and temperature ratings when cross-referencing with other manufacturers' equivalents.