LX1691IPW

Lighting, Ballast Controllers Overview

The LX1691IPW is an enhanced multi-mode cold cathode fluorescent lamp (CCFL) controller manufactured by Microsemi, a Microchip Technology company. It operates within a wide input voltage range of 2.8 V to 5.5 V, allowing direct connection to single-cell lithium-ion batteries. The device utilizes pulse width modulation for control and features a 16-pin TSSOP package. Key electrical characteristics include a maximum operating temperature of 85 °C and compliance with RoHS standards.

Lighting, Ballast Controllers Feature Summary

• Supports multiple dimming modes including amplitude and duty cycle control with digital or analog inputs.
• Integrates a full-wave rectifier and stable oscillator to minimize external component requirements.
• Includes fault protection mechanisms such as open-lamp voltage regulation and overvoltage/overcurrent shutdown.

Lighting, Ballast Controllers Applications

• Laptop computer displays
• Portable monitors
• Handheld devices

Lighting, Ballast Controllers Procurement Notes

Verify the manufacturer designation carefully, as the LX1691 series was originally developed by Microsemi before its acquisition by Microchip Technology. Ensure the specific suffix matches the required package type and environmental compliance status. Confirm that the source documentation explicitly identifies the part as an enhanced multi-mode CCFL controller suitable for low-voltage battery applications.

Lighting, Ballast Controllers Selection Notes

Select this component for designs requiring efficient backlighting control in portable electronics powered by single-cell lithium-ion sources. The wide input voltage capability simplifies power supply design. Consider the integrated fault protection and flexible dimming options when evaluating system reliability and user interface requirements for display brightness adjustment.

Lighting, Ballast Controllers Part Context

This controller belongs to the LX1691 family of CCFL drivers designed for portable computing and display applications. It represents an evolution of earlier architectures, offering improved transient response through feedforward input voltage sensing. The device is intended for use in systems where space constraints and power efficiency are critical design parameters.

Lighting, Ballast Controllers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult official Microchip or Microsemi resources for cross-reference information regarding compatible legacy or alternative components.