LT1184FIS#PBF

Special Purpose Regulators Overview

The LT1184FIS#PBF is a switching regulator designed for Cold Cathode Fluorescent Lamp (CCFL) backlight applications. It integrates a high-current switch capable of delivering up to 1.25A and operates with an input voltage range from 3V to 30V. The device functions at a fixed switching frequency of 200kHz and features open-lamp protection circuitry. It supports both grounded and floating lamp configurations within a 16-lead SOIC package.

Special Purpose Regulators Feature Summary

• Integrates a high-efficiency, high-current power switch for CCFL drive
• Supports flexible grounded or floating lamp configurations
• Includes built-in open-lamp protection to prevent component damage
• Provides control logic for CCFL backlight regulation

Special Purpose Regulators Applications

• Notebook computer displays
• Palmtop computers
• Portable instruments
• Automotive display systems
• Retail terminal screens

Special Purpose Regulators Procurement Notes

Verify the specific suffix #PBF indicates lead-free packaging compliant with RoHS standards before procurement. Confirm that the IS package variant matches the required thermal and footprint constraints for the target PCB design. Ensure supply availability aligns with project timelines as distribution status may vary.

Special Purpose Regulators Selection Notes

Select this component when a dedicated CCFL driver with integrated power switching is required. It is suitable for designs needing a wide input voltage range and support for floating lamp topologies. Consider the 200kHz switching frequency regarding EMI filtering requirements and inductor selection for the specific application environment.

Special Purpose Regulators Part Context

This part belongs to the LT1182/LT1183/LT1184 family of dual current mode switching regulators. While the LT1182 and LT1183 include LCD contrast control capabilities, the LT1184F isolates the CCFL function. This simplification makes it ideal for applications requiring only backlight illumination without complex contrast modulation circuits.

Special Purpose Regulators Replacement Considerations

The LT1182IS#PBF and LT1183IS#PBF are related parts within the same family but include additional LCD contrast control pins and functionality. If contrast control is not needed, these may serve as functional substitutes, though pin compatibility and unused pin handling must be verified against the schematic.