UCC3974PWR

Overview

The UCC3974PWR is a CCFL controller manufactured by Texas Instruments, housed in a 16-TSSOP surface-mount package. It operates within a supply voltage range of 4.5V to 24V and features a switching frequency between 30kHz and 60kHz. The device draws a supply current of 1.7mA and supports an operating temperature range from 0°C to 70°C. This component is designed for cold cathode fluorescent lamp control applications.

Feature Summary

• Integrated controller for managing cold cathode fluorescent lamps
• Supports variable switching frequencies up to 60kHz
• Operates with wide input voltage supply ranges

Applications

• Cold Cathode Fluorescent Lamp (CCFL) control circuits
• Backlight power supplies for displays
• Industrial lighting systems requiring CCFL drivers

Procurement Notes

Verify the specific revision code and tape-and-reel packaging details against the manufacturer's latest documentation. Confirm that the 16-TSSOP footprint matches the target PCB layout. Ensure the operating temperature range meets the environmental requirements of the final assembly. Check for any end-of-life notices or alternative part recommendations from the supplier.

Selection Notes

Select this component when designing CCFL backlighting solutions requiring integrated frequency control. Consider the 4.5V to 24V input range for compatibility with various bus voltages. Evaluate the 1.7mA supply current for low-power system constraints. Verify thermal performance within the 0°C to 70°C operational window for the intended enclosure.

Part Context

This part belongs to the Texas Instruments family of lighting drivers and power management ICs. It serves as a specialized solution for CCFL applications, distinct from general-purpose PWM controllers. The TSSOP-16 package allows for compact integration into display modules and lighting fixtures where space is limited.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.