LP8555YFQR

LED Driver IC Overview

The LP8555YFQR is a high-efficiency LED backlight driver from Texas Instruments, designed for tablet PCs and similar portable devices. It integrates dual DC-DC boost converters with high-precision current sinks. The device operates within a VDD range of 2.7 V to 20 V and supports PWM dimming up to 180 mA. It features adjustable switch frequency and mixed analog/PWM dimming capabilities.

LED Driver IC Feature Summary

• Integrates dual DC-DC boost converters for efficient power management
• Supports mixed analog and PWM dimming control methods
• Includes Content Adaptive Backlight Control (CABC) functionality

LED Driver IC Applications

• Tablet PC backlight systems
• Portable electronic display illumination
• High-efficiency LED lighting drivers

LED Driver IC Procurement Notes

Verify the specific suffix YFQR against the official datasheet to confirm package type and reel specifications. Ensure compatibility with system voltage ranges between 2.7 V and 20 V. Confirm thermal requirements for the DSBGA package in the final design.

LED Driver IC Selection Notes

Select this component when dual boost converter integration is required for space-constrained designs. Consider its support for mixed dimming modes if complex brightness control is needed. Verify that the 180 mA output capability meets the target LED string requirements.

LED Driver IC Part Context

This part belongs to the LP8555 series of LED drivers from Texas Instruments. It is distinct from the LP8557AYFQT, which offers six channels instead of two. Both are designed for high-efficiency backlighting applications but differ in channel count and specific interface features.

LED Driver IC Replacement Considerations

The LP8557AYFQT is a related component in the same family but provides six outputs instead of two. Verify if the additional channels are necessary or if the dual-channel configuration of the LP8555YFQR is sufficient for the application.