MIC3201 High Brightness LED Driver

Micrel provides an ideal solution for many illumination applications

Micrel's MIC3201 High Brightness LED DriverMicrel, Inc.'s MIC3201 is a hysteretic step-down, constant-current, high-brightness LED (HB LED) driver capable of driving up to four 1 A LEDs. It provides an ideal solution for interior/exterior lighting, architectural and ambient lighting, LED bulbs, and other general illumination applications.

The MIC3201 operates with an input voltage range from  6V to 20 V. The hysteretic control gives good supply rejection and fast response during load transients and PWM dimming. The high-side current sensing and on-chip current sense amplifier delivers LED current with ±5% accuracy. An external high-side current sense resistor is used to set the output current.

The MIC3201 offers a dedicated PWM input (DIM), which enables a wide range of pulsed dimming. A high switching frequency operation up to 1 MHz allows the use of smaller external components, minimizing space and cost. The MIC3201 operates over a junction temperature range of -40°C to +125°C and is available in an 8-pin ePAD SOIC package.

Features
  • 6.0 V to 20 V input voltage range
  • High efficiency (> 90%)
  • ± 5% LED current accuracy
  • High-side current sense
  • Dedicated dimming control input
  • Hysteretic control (no compensation)
  • 1 A internal power switch
  • Up to 1 MHz switching frequency
  • Adjustable constant LED current
  • 5 V onboard regulator
  • Over temperature protection
  • –40°C to +125°C junction temperature range
  • Available in an 8-pin ePAD SOIC package
Applications
  • Architectural, industrial, and ambient lighting
  • LED bulbs
  • Street lighting
  • 12 V lighting systems (MR-16 bulbs, under cabinet lighting, garden/pathway lighting
  • Channel letters

MIC3201

ImageManufacturer Part NumberDescriptionAvailable Quantity
MIC3201YME datasheet linkIC LED DRIVER RGLTR DIM 1A 8SOICMIC3201YMEIC LED DRIVER RGLTR DIM 1A 8SOIC0MIC3201YME product page link
Published: 2010-03-23