UCC3813PW-3

DC DC Switching Controllers Overview

The UCC3813PW-3 is an economy low-power BiCMOS current mode PWM controller manufactured by Texas Instruments. It operates at a switching frequency of 1 MHz and supports multiple topologies including boost, buck, flyback, and forward configurations. The device features a maximum duty cycle of 100% and provides an output current capability of 1 A. It is housed in an 8-pin TSSOP package suitable for surface mount installation. The component functions within a temperature range of 0°C to +70°C and includes undervoltage lockout thresholds of 4.1 V and 3.6 V.

DC DC Switching Controllers Feature Summary

• Economy low-power BiCMOS technology designed for cost-sensitive applications
• Current mode PWM control with 100% maximum duty cycle capability
• Supports versatile converter topologies including boost, buck, flyback, and forward
• Integrated undervoltage lockout with specified threshold levels

DC DC Switching Controllers Applications

• Low power DC-DC converter designs
• Battery-powered equipment power management
• Adapters and chargers requiring economy solutions
• Flyback and forward converter implementations

DC DC Switching Controllers Procurement Notes

Verify the obsolete status of this specific part number before procurement planning. Texas Instruments has scheduled the UCC3813PW-3 for discontinuation. Confirm availability through authorized distributors or consider immediate transition to recommended substitute components to ensure long-term supply chain stability and production continuity.

DC DC Switching Controllers Selection Notes

Select this component for applications requiring a low-cost current mode PWM solution with high efficiency at 1 MHz switching frequencies. Ensure the design accommodates the 0°C to +70°C operating temperature range and utilizes the TSSOP-8 package constraints. Verify that the input voltage requirements align with the internal regulator and UVLO specifications provided in the official datasheet.

DC DC Switching Controllers Part Context

The UCC3813 family serves as a lower-cost alternative to the industry-standard UCC3800 series while maintaining identical base device functionality. This specific variant is part of a broader portfolio of economy PWM controllers designed to reduce system costs without compromising essential performance metrics for standard switching power supply applications.

DC DC Switching Controllers Replacement Considerations

The manufacturer recommends the UCC3813PWTR-3 as a direct substitute for the discontinued UCC3813PW-3. Evaluate pin compatibility and electrical parameter equivalence when transitioning to this replacement part to maintain existing circuit board layouts and performance characteristics.