UC3872DWTR

Overview

The UC3872DWTR is a resonant lamp ballast controller manufactured by Texas Instruments, designed for CCFL and neon lamp applications. It operates within a frequency range of 57 kHz to 78 kHz and supports a supply voltage from 4.5 V to 24 V. The device features a maximum output current of 20 mA and consumes 6 mA of operating supply current. It dissipates up to 1 W of power and functions reliably between 0°C and +70°C. Packaged in a 16-SOIC surface-mount format, it includes humidity sensitivity classification MSL Level 2 (1 year).

Feature Summary

• Integrated control circuitry specifically optimized for resonant lamp ballast topologies.
• Supports operation with cold cathode fluorescent lamps (CCFL) and neon indicators.
• Provides regulated drive signals suitable for high-frequency resonant switching applications.

Applications

• Cold Cathode Fluorescent Lamp (CCFL) backlighting systems
• Neon lamp ballast controllers
• Resonant converter power supplies

Procurement Notes

Verify the specific suffix 'DWTR' confirms the tape-and-reel packaging variant rather than the tube version. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly line. Ensure the SOIC-16 footprint matches your PCB design constraints. Check for any recent product change notices regarding pinout or electrical specifications.

Selection Notes

Select this component when designing resonant ballasts for CCFL or neon lamps requiring integrated control. Compare against the UC3872MG4 if lead-free or specific package variations are needed. Consider the UC3872DW if tube packaging is preferred over reels. Verify that the 57-78 kHz operating range aligns with your transformer design.

Part Context

This part belongs to the UC3872 family of resonant lamp ballast controllers from Texas Instruments. It shares core functionality with the UC3872DW but differs in packaging configuration. The series is distinct from general DC-DC controllers like the UC3847 or motor drivers like the UC3638, focusing exclusively on lighting applications.

Replacement Considerations

UC3872DWG4 is a confirmed lead-free alternative within the same manufacturer lineup. Verify pin compatibility before substitution. No other cross-manufacturer substitutes are documented in the provided source material.