UCC3802DG4

AC DC Converters, Offline Switchers Overview

The UCC3802DG4 is a low-power BiCMOS current-mode PWM controller manufactured by Texas Instruments. It operates within an input voltage range of 9 V to 12 V, with a nominal supply of 10 V. The device supports switching frequencies up to 1 MHz and delivers a peak output drive current of 1 A. It features a maximum duty cycle of 100% and includes programmable oscillator timing. The component is housed in an 8-pin SOIC package and functions as a switching controller for various power topologies.

AC DC Converters, Offline Switchers Feature Summary

• Implements current-mode pulse width modulation control architecture
• Provides high peak output drive capability for gate driving applications
• Supports flexible oscillator programming for variable switching frequencies
• Enables operation across Buck, Boost, Flyback, and Forward converter topologies

AC DC Converters, Offline Switchers Applications

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

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'G4' indicates lead-free and RoHS compliance status according to manufacturer documentation. Confirm the 'D' package code corresponds to the standard 8-SOIC form factor. Ensure the operating temperature range aligns with system requirements, typically specified as 0°C to 70°C for this variant. Cross-reference the datasheet revision to confirm pinout compatibility with existing PCB layouts.

AC DC Converters, Offline Switchers Selection Notes

Select this component when a low-power current-mode PWM solution is required for isolated or non-isolated DC-DC conversion. The 1 A output drive suits moderate load applications without external drivers. Consider the 1 MHz frequency limit for compact magnetic design. Verify that the 9 V to 12 V supply range matches the available bias voltage in the target circuit environment.

AC DC Converters, Offline Switchers Part Context

This part belongs to the UCC380x series of current-mode PWM controllers from Texas Instruments. It shares functional similarities with other members like the UCC3804 and UCC3805, differing primarily in internal compensation and feature sets. The DG4 designation specifies the surface-mount SOIC package and environmental compliance attributes within the broader product family.

AC DC Converters, Offline Switchers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.