UC2844ADTR

Power Supply Controllers, Monitors Overview

The UC2844ADTR is a current-mode PWM controller manufactured by Texas Instruments, designed for high-performance power supply applications. It supports Boost, Buck, Flyback, and Forward topologies with a single output channel. The device operates at a switching frequency of up to 500 kHz and features a maximum duty cycle of 50%. It delivers an output current of 1 A with a 5 V output voltage capability. The IC functions within a supply voltage range of 30 V and consumes 11 mA of operating current. It exhibits rise and fall times of 50 ns. The component is housed in a 14-SOIC package, rated for surface mount installation, and operates between -40°C and +125°C.

Power Supply Controllers, Monitors Feature Summary

• Implements current-mode PWM control architecture for precise regulation
• Supports versatile converter topologies including Boost, Buck, Flyback, and Forward
• Features low propagation delay with 50 ns rise and fall times
• Provides robust thermal performance across extended industrial temperature ranges

Power Supply Controllers, Monitors Applications

• Boost converter designs
• Buck converter implementations
• Flyback power supply circuits
• Forward converter systems

Power Supply Controllers, Monitors Procurement Notes

Verify the specific ordering suffix and package variant against the official Texas Instruments datasheet to ensure compatibility with the required footprint and pinout configuration. Confirm that the selected revision matches the intended application requirements regarding thermal ratings and electrical specifications. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and traceability before finalizing procurement orders.

Power Supply Controllers, Monitors Selection Notes

Select this component when a current-mode PWM controller is required for non-isolated or isolated DC-DC conversion architectures. Consider the 14-SOIC package dimensions for PCB layout constraints and verify that the 500 kHz switching frequency aligns with the magnetic component design parameters. Ensure the input voltage range and thermal dissipation capabilities meet the system's operational demands under maximum load conditions.

Power Supply Controllers, Monitors Part Context

This part belongs to the UCx84xA series of current-mode PWM controllers from Texas Instruments. It serves as a modern replacement for legacy variants such as the UC2844AD, which has been discontinued. The UC2844ADTR offers improved availability and consistent manufacturing standards compared to older tape-and-box packaging options, supporting automated assembly processes in high-volume production environments.

Power Supply Controllers, Monitors Replacement Considerations

The UC2844ADTR is listed as a manufacturer-recommended alternative to the discontinued UC2844AD. Other similar parts include the UC2844BDR2G from onsemi, though pinout and parameter verification is required.