MAX16821A

NOT RECOMMENDED FOR NEW DESIGNS

High-Power Synchronous HB LED Drivers with Rapid Current Pulsing

1.5MHz, 30A Synchronous LED Driver Ensures High Efficiency and Rapid Current Pulsing

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Part Details

  • Up to 30A Output Current
  • True-Differential Remote Output Sensing
  • Average Current-Mode Control
  • 4.75V to 5.5V or 7V to 28V Input-Voltage Range
  • 0.1V/0.03V LED Current-Sense Options Maximize Efficiency (MAX16821B/MAX16821C)
  • Thermal Shutdown
  • Nonlatching Output Overvoltage Protection
  • Low-Side Buck Mode with or without Synchronous Rectification
  • High-Side Buck and Low-Side Boost Mode with or without Synchronous Rectification
  • 125kHz to 1.5MHz Programmable/Synchronizable Switching Frequency
  • Integrated 4A Gate Drivers
  • Clock Output for 180° Out-of-Phase Operation for Second Driver
  • -40°C to +125°C Operating Temperature Range
MAX16821A
High-Power Synchronous HB LED Drivers with Rapid Current Pulsing
MAX16821, MAX16821A, MAX16821B, MAX16821C: Simplified Diagram
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Documentation

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Hardware Ecosystem

Parts Product Life Cycle Description
Product 1
MAX16818 NOT RECOMMENDED FOR NEW DESIGNS 1.5MHz, 30A High-Efficiency LED Driver with Rapid LED Current Pulsing
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Evaluation Kits

MAX16821BEVKIT

Evaluation Kit for the MAX16821B

Features and Benefits

  • 7V to 24V Input-Voltage Range
  • 660mA Output Current
  • Pulse-Width-Modulated LED Current Dimming
  • Resistor-Adjustable Overvoltage Protection and Switching Frequency
  • Clock Output
  • Fully Assembled and Tested

Product Details

The MAX16821B evaluation kit (EV kit) is a fully assembled and tested surface-mount printed-circuit board (PCB) designed to evaluate the MAX16821B pulse-width-modulation (PWM) LED driver controller in a boost configuration.

The MAX16821B EV kit operates from a DC supply voltage of 7V to 24V. The EV kit's output is configured to deliver 660mA of current into series LED string with a maximum forward voltage of 28V. The LED brightness can be dimmed using a digital PWM signal.

The EV kit provides an option to configure the MAX16821B IC's overvoltage protection, switching frequency, and frequency compensation. The MAX16821B EV kit also features a clock output PCB pad to drive a second LED current regulator out-of-phase.

MAX16821BEVKIT
Evaluation Kit for the MAX16821B

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