Manufacturer Part Number
LP8557IAYFQR
Manufacturer
Texas Instruments
Introduction
The LP8557IAYFQR is an energy-efficient LED driver designed for backlight applications, featuring dynamic backlight control for enhanced display quality.
Product Features and Performance
Boost DC DC Regulator
Integrated internal switch
6 output channels for multiple LEDs
Dimming support through PWM
Smooth backlight dimming transition
Supports 2.7V to 5.5V supply voltage range
Maximum 28V output voltage
Capable of providing up to 25mA per channel
Operates at two selectable frequencies: 500kHz and 1MHz
Built-in protection features such as overvoltage, thermal, and short circuit protection
Product Advantages
Optimized for power-sensitive applications
Provides uniform brightness across displays
High efficiency to improve battery life in portable devices
Small form factor suitable for compact devices
Key Technical Parameters
Number of Outputs: 6
Voltage - Supply (Min): 2.7V
Voltage - Supply (Max): 5.5V
Voltage - Output: 28V
Current - Output / Channel: 25mA
Frequency: 500kHz, 1MHz
Topology: Step-Up (Boost)
Quality and Safety Features
Overvoltage protection
Thermal protection
Short circuit protection for each channel
Compatibility
Suitable for a range of supply voltages
Compatible with multiple LED configurations
Flexible PWM dimming integration
Application Areas
LCD display backlighting for smartphones, tablets, and notebooks
Automotive interior backlighting
Instrument panel backlighting
Product Lifecycle
Active product status
Currently not flagged for discontinuation
Replacement or upgrade options not specified but can be sourced from Texas Instruments' portfolio
Several Key Reasons to Choose This Product
Enhanced visual experience with dynamic backlight control
Low power consumption for extended battery life
Small packaging for integration into space-constrained designs
High reliability and safety features to protect end-use applications
Versatile applications from consumer electronics to automotive
Fully integrated solution reduces external component count
Stable operation through a wide temperature range -30°C to 85°C
