UC3886DTR

DC DC Switching Controllers Overview

The UC3886DTR is an average current mode PWM controller IC manufactured by Texas Instruments. It operates within a supply voltage range of 6.6 V to 9.3 V and supports flyback topology applications. The device features a switching frequency of 250 kHz with a maximum duty cycle of 55%. It delivers an output current of 200 mA while consuming 1.2 mA of operating supply current. Designed for surface-mount installation, it is housed in an SOIC-8 package. The component functions as a non-isolated AC/DC converter controller suitable for off-line power supply designs.

DC DC Switching Controllers Feature Summary

• Implements average current mode control architecture for precise regulation
• Supports flyback topology for off-line power supply applications
• Integrated oscillator enables fixed 250 kHz switching frequency operation

DC DC Switching Controllers Applications

• Off-line power supply controllers
• AC/DC converter designs
• Flyback topology implementations

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'DTR' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the SOIC-8 package dimensions align with the target PCB footprint. Ensure the operating temperature range of 0°C to +70°C meets the environmental requirements of the final equipment design before procurement.

DC DC Switching Controllers Selection Notes

Select this component when average current mode control is required for improved line regulation and transient response compared to voltage mode controllers. The fixed 250 kHz frequency allows for optimized magnetics size. Ensure the input voltage stays within the 6.6 V to 9.3 V operational window and that the SOIC-8 thermal dissipation capabilities are sufficient for the intended load conditions.

DC DC Switching Controllers Part Context

This part belongs to the UCC3889/UCC3886 family of average current mode PWM controllers from Texas Instruments. These devices are designed for high-performance power conversion systems requiring tight current limiting and fast transient response. The DTR variant specifically denotes the reel-packaged version of the standard UC3886 controller, facilitating high-volume manufacturing integration.

DC DC Switching Controllers Replacement Considerations

The UC3886DTR serves as a direct replacement for other average current mode PWM controllers in flyback designs. Verify pin compatibility and electrical specifications against existing legacy components. Ensure that any substitute maintains the same 250 kHz switching frequency and SOIC-8 package outline to preserve board layout integrity.