UC3872M

Overview

The UC3872M 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. Housed in an SSOP-16 surface-mount package, it includes humidity sensitivity classification.

Feature Summary

• Integrated phase-shift resonant control architecture optimized for high-frequency lamp ballasting
• Built-in protection mechanisms ensuring stable operation under varying load conditions
• Compact surface-mount packaging facilitating efficient PCB layout for display backlighting systems

Applications

• Cold Cathode Fluorescent Lamp (CCFL) ballast controllers
• Neon lamp driver circuits
• Display backlighting power supplies

Procurement Notes

Verify the specific suffix designation against official datasheets to confirm package type and temperature grade. Ensure compatibility with existing circuit designs regarding pinout and electrical specifications. Confirm RoHS compliance status through manufacturer documentation before integration into regulated products.

Selection Notes

Select this component for resonant lamp applications requiring precise frequency control within the 57-78 kHz range. Consider the SSOP-16 package constraints for thermal management and board space. Evaluate the 24 V maximum supply limit against system requirements.

Part Context

Part of the UC3872 series focusing on resonant lamp ballast control. Distinguished by its SSOP-16 SMD package variant compared to other package options like SOIC or PDIP found in related models.

Replacement Considerations

UC3872MG4: Verified alternative with identical functional specifications and extended suffix designation for package/temperature variations.