UCC2813D-1

DC DC Switching Controllers Overview

The UCC2813D-1 is a low-power, economy BiCMOS current mode PWM controller designed for offline and DC-to-DC fixed-frequency switching applications. It features a 1 MHz switching frequency with a maximum duty cycle of 50%. The device operates within a temperature range of -40°C to +85°C and utilizes an 8-SOIC package. Key electrical parameters include a 9.4 V UVLO threshold, 7.4 V hysteresis, and a 1 A output drive capability. It supports boost, flyback, and forward topologies.

DC DC Switching Controllers Feature Summary

• Integrates internal full-cycle soft-start and leading-edge blanking for simplified design
• Compatible pin configuration with UC384x series for easy upgrades
• Optimized for battery-powered systems with specific baseline voltage options

DC DC Switching Controllers Applications

• Offline power supplies
• Battery-powered equipment
• DC-to-DC converters

DC DC Switching Controllers Procurement Notes

Verify the exact ordering suffix to confirm package type, temperature grade, and environmental compliance status such as RoHS. Ensure the supplier provides original manufacturer documentation to validate authenticity. Cross-reference the part number against the official Texas Instruments database to avoid counterfeit components. Confirm that the received units match the specified SOIC-8 footprint and lead finish requirements before integration into production lines.

DC DC Switching Controllers Selection Notes

Select this component when designing cost-sensitive power stages requiring high-frequency operation up to 1 MHz. It is suitable for applications needing a 50% maximum duty cycle limit. Choose this variant over other family members if the specific 9.4 V/7.4 V UVLO thresholds align with the input voltage profile. Consider the -40°C to 85°C operating range for industrial or automotive environments where standard commercial grades are insufficient.

DC DC Switching Controllers Part Context

This part belongs to the UCC2813-x series, which shares architectural similarities with the UC384x family but offers enhanced features like integrated soft-start. The 'D' suffix indicates the SOIC surface-mount package, while '-1' specifies the particular UVLO and temperature variant within the product line. It serves as a modern replacement for legacy controllers in compact power designs.

DC DC Switching Controllers Replacement Considerations

Direct pin-compatible substitutes exist within the UC384x series, though functional differences in soft-start and blanking must be evaluated. Verify that alternative parts support the required 1 MHz frequency and 50% duty cycle constraints. Check if substitute devices offer compatible UVLO thresholds to ensure stable startup behavior in the target circuit.