UC2825BDW

AC DC Converters, Offline Switchers Overview

The UC2825BDW is a high-speed PWM controller manufactured by Texas Instruments, designed for versatile switching power supply applications. It supports multiple topologies including boost, flyback, forward, half-bridge, and push-pull configurations. The device features a 1 MHz switching frequency capability with a maximum duty cycle of 50%. It provides two output channels capable of sourcing up to 2 A each, with an internal reference voltage of 5.1 V. Operating within a temperature range of -40°C to +85°C, it is housed in a 16-pin SOIC package.

AC DC Converters, Offline Switchers Feature Summary

• Supports multiple converter topologies including boost, flyback, forward, half-bridge, and push-pull
• Features dual high-current outputs for driving external power switches
• Includes integrated soft-start circuitry to limit inrush current during startup

AC DC Converters, Offline Switchers Applications

• High-density DC-DC converters
• Battery-powered equipment power supplies
• Adapters and chargers

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'DW' confirms the surface-mount SOIC-16 package variant. Confirm RoHS compliance status as indicated in official documentation. Ensure the operating environment remains within the specified -40°C to +85°C range. Validate that the application design accommodates the 50% maximum duty cycle limitation inherent to this part number.

AC DC Converters, Offline Switchers Selection Notes

Select this component when a single IC must support various isolated or non-isolated topologies. The dual-output architecture simplifies designs requiring half-bridge or push-pull stages. Consider the 1 MHz frequency for compact magnetic component sizing. Verify that the 50% duty cycle constraint aligns with the required transformer turns ratio and input voltage range.

AC DC Converters, Offline Switchers Part Context

This part belongs to the UC2825 family of high-speed PWM controllers from Texas Instruments. It shares functional similarities with other members like the UC2825ADW but differs in package type and potentially minor electrical tolerances. The family is characterized by its flexibility across multiple power conversion topologies and robust drive capabilities.

AC DC Converters, Offline Switchers Replacement Considerations

Direct substitutes include UC2825DW (same function, tube packaging) and UC2825BDWG4 (RoHS-compliant version). Cross-reference with UC2825ADW if lead-free processing is required, noting potential differences in maximum duty cycle specifications.