UC2845DTRG4

Power Supply Controllers, Monitors Overview

The UC2845DTRG4 is a current-mode PWM controller from Texas Instruments designed for high-performance switching power supplies. It operates with a maximum switching frequency of 500 kHz and supports topologies including Boost, Flyback, and Forward. The device features a single output capable of delivering 1 A drive current. It functions within a supply voltage range of 7.6 V to 30 V and includes an integrated oscillator with programmable timing. The component is housed in an 8-SOIC surface-mount package and is rated for operation between -40°C and +85°C.

Power Supply Controllers, Monitors Feature Summary

• Implements current-mode control architecture for improved transient response and inherent line feed-forward capabilities.

Power Supply Controllers, Monitors Applications

• Boost converter designs
• Flyback transformer isolation circuits
• Forward converter implementations

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix 'DTRG4' against the manufacturer's official documentation to confirm the tape-and-reel packaging configuration and RoHS compliance status. Ensure the ordering part number matches the exact pinout and thermal characteristics required by the target PCB layout. Cross-reference the datasheet revision history for any updates to electrical parameters or recommended operating conditions prior to final procurement.

Power Supply Controllers, Monitors Selection Notes

Select this component when designing isolated or non-isolated DC-DC converters requiring precise current-mode regulation. The 500 kHz frequency limit allows for smaller passive components compared to lower-frequency alternatives. Confirm that the application circuit supports the required 1 A peak output current capability for gate driving. Validate that the input voltage range aligns with the 7.6 V to 30 V operational window defined in the specifications.

Power Supply Controllers, Monitors Part Context

This part belongs to the UCx84x family of current-mode PWM controllers, widely utilized in industrial and consumer power management applications. The UC2845 variant specifically targets forward, flyback, and boost topologies. It serves as a standard solution for medium-power conversion stages where efficiency and component size are critical design constraints.

Power Supply Controllers, Monitors Replacement Considerations

UC2845AD8TRG4

Power Supply Controllers, Monitors FAQ

What switching topologies does the UC2845 support?

The UC2845 supports Boost, Flyback, and Forward converter topologies.

What is the maximum switching frequency of the UC2845?

The maximum switching frequency is 500 kHz.