UCC3800PW

DC DC Switching Controllers Overview

The UCC3800PW is a low-power BiCMOS current-mode PWM controller manufactured by Texas Instruments. It operates with a switching frequency of 1 MHz and provides an output current capability of 1 A. The device features undervoltage lockout thresholds at 7.2 V and 6.9 V, supporting up to 100% duty cycle operation. Designed for surface-mount applications, it is housed in an 8-pin TSSOP (PW) package. The component functions within a temperature range of 0°C to +70°C.

DC DC Switching Controllers Feature Summary

• Integrates low-power BiCMOS technology for efficient current-mode pulse width modulation control
• Supports high-frequency operation at 1 MHz switching speed
• Includes built-in undervoltage lockout with defined threshold levels for reliable startup
• Enables full duty cycle control up to 100 percent for maximum power transfer

DC DC Switching Controllers Applications

• Low-power isolated DC-DC converters
• Flyback power supply designs
• Battery charger circuits
• Adapters and wall-wart power supplies

DC DC Switching Controllers Procurement Notes

Verify the specific ordering suffix matches the required package type and tape/reel or tube configuration. Confirm that the manufacturer designation aligns with Texas Instruments specifications. Ensure the part number corresponds to the correct pinout and thermal characteristics for your PCB layout requirements before finalizing procurement orders.

DC DC Switching Controllers Selection Notes

Select this controller for applications requiring simple current-mode control with minimal external components. Consider the 1 MHz frequency for smaller magnetic component sizes. Evaluate the 1 A output drive capability against load requirements. Verify compatibility with the intended transformer or inductor design parameters to ensure stable operation within the specified temperature range.

DC DC Switching Controllers Part Context

This component belongs to the UCC3800 series of low-power PWM controllers. It shares functional similarities with other devices in the family but differs in package options and specific electrical thresholds. The PW suffix indicates the TSSOP-8 package variant, distinguishing it from through-hole or alternative surface-mount versions available within the same product line.

DC DC Switching Controllers Replacement Considerations

Direct substitutes include other UCC3800 series variants with compatible pinouts and electrical characteristics. Verify equivalent switching frequency and output drive capabilities when cross-referencing datasheets. Ensure replacement parts maintain the same undervoltage lockout thresholds and duty cycle limits for circuit stability.