MAX16822A

PRODUCTION

2MHz, High-Brightness LED Drivers with Integrated MOSFET and High-Side Current Sense

High-Voltage, High-Efficiency LED Drivers with Integrated MOSFET Save Space and Cost

Data Sheet (Rev. 4) Product Selection Table
Part Models
4
1ku List Price
Starting From $1.51
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Part Details

  • Cost-Effective Solution for Wide Range of LED Lighting Applications
    • 6.5V to 65V Input Voltage Range
    • Output Current Up to 500mA
    • ±3% LED Current Accuracy
    • Selectable Dimming Options: Linear or PWM
  • Minimal Component Count Saves Cost and Space
    • On-Board 65V, 0.85Ω Power MOSFET
    • Resistor-Programmable Constant LED Current
    • Integrated High-Side Current Sense with 200mV Current-Sense Reference
    • Hysteretic Control: Up to 2MHz Switching Frequency
  • Protection Features and Wide Operating Temperature Range Improves Reliability
    • Thermal-Foldback Protection Dims LEDs to Minimize Overheating
    • Thermal-Shutdown Protection
    • Available in an 8-Pin SO Package
    • Operation Over -40°C to +125°C Temperature Range
MAX16822A
2MHz, High-Brightness LED Drivers with Integrated MOSFET and High-Side Current Sense
MAX16822A, MAX16822B: Typical Application Circuit
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Documentation

Data Sheet 1

Reliability Data 1

Design Note 1

Technical Articles 2

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Evaluation Kits

MAX16822BEVKIT

Evaluation Kit for the MAX16822B

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Features and Benefits

  • 6V to 65V Wide Supply Voltage Range
  • 333mA LED Current
  • Digital PWM Dimming Control
  • Analog Dimming Control
  • Thermal Foldback and Temperature Simulation Circuit
  • Evaluates MAX16822A (IC Replacement Required)
  • Fully Assembled and Tested

Product Details

The MAX16822B evaluation kit (EV kit) demonstrates the MAX16822B hysteretic current-mode high-brightness LED (HB LED) driver IC. The MAX16822B EV kit is configured as a step-down topology with a constant-current HB LED driver circuit for external HB LEDs. The MAX16822B EV kit operates from a DC supply voltage of 6V to 65V and is configured to deliver up to 350mA of current to user-supplied HB LEDs. The output voltage for the HB LED string can go up to 64V and depends upon the EV kit's input voltage.

The MAX16822B EV kit can be configured for digital pulse-width modulation (PWM) dimming operation using a digital PWM input signal to control the HB LEDs' brightness. The MAX16822B has an undervoltage lockout (UVLO) feature that disables the EV kit at low input voltage. The EV kit circuit also features a thermal foldback and temperature simulation circuit feature. The MAX16822B EV kit is a fully assembled and tested surface-mount board. The MAX16822B EV kit can also evaluate the MAX16822A, or for higher currents, a MAX16832 IC.

Warning: Voltages exceeding 42V may exist on the LED+ and LED- output pads.

Applications

  • Architectural, Industrial, and Ambient Lighting
  • Automotive RCL, DRL, and Fog Lights
  • Heads-Up Displays
  • Indicator and Emergency Lighting
MAX16822BEVKIT
Evaluation Kit for the MAX16822B

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