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MAX16824：High-Voltage, Three-Channel Linear High-Brightness LED Drivers

Independently Dimmable, Three-Channel LED Drivers for Compact and Simple Driver Circuits

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. The MAX16824 features three PWM inputs that control the duty cycle of the output current, allowing a wide LED dimming range to be implemented. The PWM inputs also function as on/off control for each corresponding output. The MAX16825 offers a 4-wire serial interface, a 3-bit shift register, and a 3-bit transparent latch. The serial interface allows a microcontroller to configure the output channels using four inputs (DIN, CLK, LE, active-low OE) and a data output (DOUT). DOUT allows multiple drivers to be cascaded and operated together. The MAX16824/MAX16825's on-board pass elements minimize the need for external components, while at the same time, providing ±5% LED current accuracy. Additional features include a +5V (±5%) regulated output with 4mA output current capability and thermal protection. The MAX16824/MAX16825 are available in a thermally enhanced 16-pin TSSOP-EP package and specified over the -40°C to +125°C temperature range.

Key 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 Paddle Package

MAX16824, MAX16825: Typical Operating Circuit Applications/Uses Architectural and Decorative Lighting Automotive Lighting Indoor and Outdoor LED Video Displays Industrial Lighting LCD Display Backlighting Mood Lighting

DataSheet

Parametrics

Design kits & evaluation modules

• MAX16825EVKIT
• MAX16824EVKIT

Quality and Environmental Data

• MAX16824.pdf

Ordering Information