LT1186FCS#PBF

Lighting, Ballast Controllers Overview

The LT1186FCS#PBF is a fixed-frequency, current-mode switching regulator designed for cold cathode fluorescent lighting (CCFL) control. It integrates an efficient high-current switch, oscillator, output drive logic, and a micropower 6-bit 100µA full-scale current output DAC. The device supports grounded or floating lamp configurations and features a 2-wire SMBus interface for programmable brightness control via bits-to-lamp-current mapping. It operates from a battery supply range of 4.5V to 30V with a logic supply of 3.3V or 5V. The IC includes open lamp protection and selectable SMBus addresses.

Lighting, Ballast Controllers Feature Summary

• Integrates a micropower 6-bit DAC for precise current programming
• Supports two-way SMBus serial interface for digital control
• Includes open lamp protection circuitry for safety
• Retains digital data internally during shutdown mode

Lighting, Ballast Controllers Applications

• Notebook computer displays
• Palmtop computers
• Portable instruments
• Personal digital assistants

Lighting, Ballast Controllers Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm package type and temperature grade. Ensure the selected variant matches the required pinout and electrical characteristics for the target CCFL application. Cross-reference the manufacturer part number with authorized distributors to confirm availability and authenticity before procurement.

Lighting, Ballast Controllers Selection Notes

Select this component when designing CCFL backlight systems requiring digital brightness adjustment via SMBus. It is suitable for portable devices needing wide input voltage ranges and integrated protection features. Consider the 200kHz switching frequency for magnetic component size optimization. Verify compatibility with the host system's logic voltage levels.

Lighting, Ballast Controllers Part Context

This part belongs to the LT1186 family of CCFL switching regulators from Analog Devices. These devices are engineered for portable electronics where space and power efficiency are critical. The family offers various packages and options to suit different design constraints while maintaining consistent control functionality for fluorescent lamps.

Lighting, Ballast Controllers Replacement Considerations

Consult official Analog Devices substitution guides for verified alternatives. Generic replacements may lack specific SMBus addressability or integrated protection features. Ensure any substitute maintains compatible input voltage ranges and current control precision.