DS3988T+

Overview

The DS3988T+ is an integrated circuit designed for cold-cathode fluorescent lamp (CCFL) control, manufactured by Analog Devices Inc./Maxim Integrated. It operates within a frequency range of 40 kHz to 80 kHz and supports up to eight channels for backlighting applications in LCD TVs and PC monitors. The component is housed in a 48-lead LQFP package. It functions as a dedicated controller for managing multiple CCFL lamps, ensuring stable operation for display backlights.

Feature Summary

• Supports control of up to eight independent CCFL channels
• Integrated oscillator with adjustable frequency between 40 kHz and 80 kHz
• Designed specifically for LCD TV and PC monitor backlighting systems

Applications

• LCD TV backlight control
• PC monitor backlighting
• Multi-channel CCFL driver systems

Procurement Notes

Verify availability status carefully, as the component may be subject to limited supply or end-of-life conditions. Confirm package integrity and datasheet version before integration. Cross-reference with official Analog Devices documentation to ensure compatibility with current design requirements.

Selection Notes

Select this IC when designing multi-lamp CCFL backlight systems requiring precise frequency control. Ensure the application supports the 40–80 kHz operating range and utilizes a 48-lead LQFP footprint. Verify thermal and electrical constraints align with the controller’s specifications.

Part Context

The DS3988T+ belongs to Maxim Integrated’s family of CCFL controllers, targeting high-reliability display backlighting. It integrates essential functions for driving multiple lamps, reducing external component count. This part is commonly used in consumer electronics where uniform brightness across multiple lamps is critical.

Replacement Considerations

Check for direct substitutes within the DS3988 series or compatible CCFL controllers from Analog Devices. Verify pinout and functional equivalence before substitution.