UCC2805PWG4

Overview

The UCC2805PWG4 is a low-power BiCMOS current-mode PWM controller manufactured by Texas Instruments. It operates within a supply voltage range of 8.5 V to 36 V and supports switching frequencies up to 1 MHz. The device features a maximum duty cycle of 50% and provides an output drive current of 1 A. It functions across a temperature range from -40°C to +85°C and is housed in an 8-pin TSSOP package.

Feature Summary

• Implements current-mode pulse-width modulation control for efficient power regulation
• Designed with low-power BiCMOS technology to minimize quiescent consumption
• Includes programmable oscillator for flexible frequency selection

Applications

• Universal AC-DC adapters
• Telecommunications power supplies
• Battery chargers

Procurement Notes

Verify the specific suffix G4 indicates lead-free compliance and RoHS status before procurement. Confirm the package type matches the required PCB footprint. Check for obsolescence notices as this component may be subject to production lifecycle changes. Ensure the operating temperature range meets the final application requirements.

Selection Notes

Select this controller for applications requiring low standby power and high efficiency. It is suitable for designs needing a single-ended output topology with current-mode control. Consider the 50% maximum duty cycle limitation when designing transformer or inductor ratios. Evaluate thermal performance within the specified ambient temperature range.

Part Context

This component belongs to the UCC2805 series of low-power current-mode PWM controllers. It is part of Texas Instruments' portfolio focused on energy-efficient power management solutions. The series is commonly utilized in compact power supply designs where size and power consumption are critical constraints.

Replacement Considerations

Public confirmed substitute part numbers: None.