UCC1802J

DC DC Switching Controllers Overview

The UCC1802J is a low-power BiCMOS current-mode PWM controller manufactured by Texas Instruments. It operates within a supply voltage range of 4.5V to 18V and supports switching frequencies up to 1MHz. The device features a wide duty cycle range from 0% to 96%, with a typical maximum of 96%. It includes integrated soft-start, undervoltage lockout (UVLO), and overcurrent protection. The component is housed in an 8-pin SOIC package and is designed for high-efficiency power conversion applications.

DC DC Switching Controllers Feature Summary

• Low-power BiCMOS technology optimized for energy efficiency
• Current-mode control architecture for precise regulation
• Integrated soft-start and overcurrent protection mechanisms
• Wide operating supply voltage range supporting diverse input conditions

DC DC Switching Controllers Applications

• Universal AC-DC adapters
• Battery chargers
• Flyback converters
• Forward converters

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'J' indicates the commercial temperature grade and SOIC-8 package configuration as per the official datasheet. Confirm RoHS compliance status and lead time requirements directly with authorized distributors or Texas Instruments before procurement. Ensure the ordering part number matches the exact pinout and electrical specifications required for the design.

DC DC Switching Controllers Selection Notes

Select the UCC1802J for designs requiring low quiescent current and high-frequency operation in isolated converter topologies. Its current-mode control simplifies compensation network design compared to voltage-mode alternatives. Consider the 96% maximum duty cycle limit when designing for minimum input voltage scenarios to ensure adequate off-time for reset.

DC DC Switching Controllers Part Context

The UCC1802 belongs to Texas Instruments' family of low-power BiCMOS PWM controllers. It is engineered for cost-sensitive and space-constrained power supplies where efficiency at light loads is critical. The device complements other UCC series controllers by offering a balance of performance and simplicity for standard flyback and forward architectures.

DC DC Switching Controllers Replacement Considerations

Direct replacements include the UCC1802DR or UCC1802N depending on the required package type. Verify that substitute components maintain compatible pinouts and electrical characteristics such as switching frequency limits and protection thresholds.