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LP8555 Datasheet High-efficiency Led Backlight Driver

Manufacturer: Texas Instruments

Overview: Product Folder Sample & Buy Technical Documents Tools & Software Support & munity LP8555 SNVS857 – FEBRUARY 2014 LP8555 High-Efficiency LED Backlight Driver for Tablet PCs.

General Description

The LP8555 is a high efficiency LED driver with integrated dual DC-DC boost converters.

It has 12 high-precision current sinks that can be controlled by a PWM input signal, an I2C master, or both.

Dual-boost configuration of LP8555 shares the load to two inductors and allows thinner overall solution size and better efficiency pared to single-boost solutions.

Key Features

  • 1 Dual High-Efficiency DC/DC Boost Converters.
  • 2.7-V to 20-V VDD Range.
  • 12 50-mA High-Precision LED Current Sinks With 12-Bit Brightness Control.
  • Adaptive LED Current Sink Headroom Controls for Maximum System Efficiency.
  • LED String Count Auto-Detection.
  • Phase-Shifted PWM Mode for Reduced Audible Noise.
  • PWM Input Duty-Cycle and/or I2C-Register Brightness Control.
  • Hybrid PWM and Current Dimming for Higher LED Drive Optical Eff.

More Datasheets from Texas Instruments

Part Number Description
LP8550 High-Efficiency LED Backlight Driver
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LP8501 Multi-Purpose 9-Output LED Driver
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LP8545 High-Efficiency LED Backlight Driver

LP8555 Distributor