MAX16800

PRODUCTION

High-Voltage, 350mA, Adjustable Linear High-Brightness LED (HB LED) Driver

Data Sheet (Rev. 1) Product Selection Table
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Overview

  • +6.5V to +40V Operating Range
  • Adjustable Level (35mA to 350mA)
  • ±3.5% Output Current Accuracy
  • Integrated Pass Element with Low-Dropout Voltage (0.5V typ)
  • Output Short-Circuit Protection
  • +5V Regulated Output with 4mA Source Capability
  • Thermal Shutdown
  • Differential LED Current Sense
  • High-Voltage Enable Pin for Dimming Interface
  • Low Shutdown Supply Current (12&µA typ)
  • Low 204mV Current-Sense Reference Reduces Power Losses
  • Wave-Shaped Soft Edges Reduce Radiated EMI During PWM Dimming
  • Available in Small, Thermally Enhanced, 5mm x 5mm, 16-Pin TQFN Package
  • -40°C to +125°C Operating Temperature Range

The MAX16800 current regulator operates from a 6.5V to 40V input voltage range and delivers up to a total of 350mA to one or more strings of high-brightness LEDs. The output current of the MAX16800 is adjusted by using an external current-sense resistor in series with the LEDs. An enable input allows wide-range "pulsed" dimming. Wave-shaping circuitry reduces EMI. The differential current-sense input increases noise immunity. The MAX16800 is well suited for applications requiring high-voltage input and is able to withstand automotive load-dump events up to 40V. An on-board pass element minimizes external components while providing ±3.5% output current accuracy. Additional features include a 5V regulated output and short-circuit and thermal protection.

The MAX16800 is available in a thermally enhanced, 5mm x 5mm, 16-pin TQFN package and is specified over the automotive -40°C to +125°C temperature range.

The MAX16835 is a newer and more cost effective product that provides the same performance and is pin-to-pin compatible with the MAX16800.

Applications

  • Automotive Exterior: Tail Lights and CHMSL
  • Automotive Interior: Map, Courtesy, and Cluster Lighting
  • General Illumination
  • Navigation and Marine Indicators
  • Signage, Gasoline Canopies, Beacons
  • Warning Lights for Emergency Vehicles
MAX16800
High-Voltage, 350mA, Adjustable Linear High-Brightness LED (HB LED) Driver
MAX16800: Simplified Diagram
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Documentation

Data Sheet 1

Reliability Data 1

Application Note 1

Design Note 1

Technical Articles 2

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