LP3933SLX

LED Driver IC Overview

The LP3933SLX is a DC-DC regulator and LED driver IC manufactured by Texas Instruments. It features a boost topology with an internal switch, providing 12 outputs. The device operates within a supply voltage range of 2.65V to 2.9V and delivers an output voltage of 5.3V. Output current capabilities are specified at 25mA per channel and 120mA for flash applications. It supports PWM dimming and functions at a frequency of 1MHz. The component is housed in a 32-TLGA (5.5x4.5) package and is designed for surface mount installation.

LED Driver IC Feature Summary

• Integrates a step-up DC-DC converter with an internal switch for efficient power management.
• Provides regulated multi-channel LED driving capability with dedicated flash support.
• Supports precise brightness control through Pulse Width Modulation (PWM) dimming interface.

LED Driver IC Applications

• Mobile device backlighting systems
• Camera module flash illumination
• Portable electronic lighting solutions

LED Driver IC Procurement Notes

Verify component authenticity and datasheet alignment due to the part's discontinued status. Confirm that the specific package variant matches design requirements, as the LP3933 family includes multiple pinout configurations. Ensure compatibility with existing PCB footprints and thermal management strategies before finalizing procurement plans for legacy system maintenance.

LED Driver IC Selection Notes

Select this component when designing systems requiring integrated boost regulation and multi-channel LED control within a compact form factor. Consider the strict input voltage window and the availability of replacement parts given the end-of-life status. Evaluate whether the fixed output voltage and current specifications align with the target LED array requirements without necessitating external compensation components.

LED Driver IC Part Context

This component belongs to the LP3933 series of power management ICs from Texas Instruments. The series focuses on providing integrated solutions for mobile and portable electronics, combining switching regulators with LED drivers. The LP3933SLX specifically represents a version optimized for high-density applications requiring multiple output channels and flash functionality within a small footprint.

LED Driver IC Replacement Considerations

The LP3933SLX is officially listed as discontinued. No direct public substitute part numbers are confirmed in the provided documentation. Designers should consult Texas Instruments for potential obsolescence management options or equivalent newer generation components that meet similar electrical and mechanical specifications.