General Description

The MAX16824/MAX16825 three-channel LED drivers operate over a 6.5V to 28V input voltage range. These devices provide three open-drain constant-current-sinking outputs that are rated to 36V and deliver up to 150mA of current to each string of high-brightness LEDs (HB LEDs). The current at each output is programmable by means of an external current-sense resistor.

Features

♦ 6.5V to 28V Operating Range

♦ Outputs Connected to 36V Supply for Long LED Strings

♦ Three 36V-Rated Output Channels with Independently Adjustable LED Current

♦ 150mA Output Current Per Channel

♦ ±5 LED Current Accuracy

♦ PWM Dimming

    Three Independent Dimming Control Inputs (MAX16824)

    4-Wire Serial Interface LED Current Chopping (MAX16825)

♦ +5V (±5) Regulated Output with 4mA Source Capability

♦ Fast Transient Dimming Response

♦ 200mV Current-Sense Reference Reduces Power Loss

♦ Thermal Shutdown

♦ -40°C to +125°C Operating Temperature Range

♦ Thermally Enhanced, 16-Pin TSSOP Exposed Pad Package

Applications

    Industrial Lighting

    Architectural and Decorative Lighting

    Mood Lighting

    Indoor and Outdoor LED Video Displays

    Automotive Lighting

    LCD Display Backlighting