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Home » NEWEST Products » New by Category » Semiconductors » Driver ICs » MIC2870/1 LED Drivers - Micrel
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Micrel MIC2870/1 LED Drivers

Micrel MIC2870/1 LED Drivers

Micrel MIC2870/1 is an ideal solution for high-resolution camera phone LED flashlight driver applications. The LED driver current is generated by an integrated inductive boost converter with 2MHz switching frequency which allows the use of very small inductors and output capacitors. MIC2870 supports two 750mA white-LEDs (WLEDs) or a single 1.5A WLED configuration. When two WLEDs are connected, their currents are matched automatically. The MIC2870 operates in either flash or torch modes that can be controlled through either an I2C interface or external pins. The brightness in the flash and torch mode can be adjusted via two external resistors individually. The high-speed I2C interface provides a simple control at a clock speed up to 3.4MHz to support most camera functions such as auto-focus, white balance, and image capture (flash mode). MIC2871 operates in either flash or torch modes that can be controlled through the single wire serial interface and/or external control pins. Default flash and torch brightness can be adjusted via an external resistor. A single wire serial interface allows the host processor to support typical camera functions such as auto-focus, white balance, and image capture (flash mode).


MIC2870 Features
  • Best-in-class efficiency (up to 94%) extends battery life
  • Integrated power MOSFET, tiny ceramic capacitors, and small inductors save board space and cost
  • Ultra-small (4mm×4mm) BOM area
  • Highly accurate LED current that ensures reliability and longevity of LED
  • Only requires three external components
  • GUI available
  • Video light and flash strobe controal via 3.4MHz I2C interface
  • Pin-controlled enable/disable High

MIC2870 Applications
  • High-end smart phones
  • Tablet PC/eReaders
  • Digital still cameras
  • Video camera lighting
  • LED current source biasing

MIC2871 Features
  • Up to 1.2A flash LED driving current
  • Highly-efficient, synchronous boost driver (up to 94%)
  • ±5% LED current accuracy
  • Control through single-wire serial interface or external control pins
  • Input voltage range: 2.7V to 5.5V
  • True load disconnect
  • Configurable safety time-out protection
  • Output over voltage protection (OVP)
  • LED short detection and protection.
  • 1µA shutdown current
  • Available in 14-pin 3mm×2mm LDFN package

MIC2871 Applications
  • Camera phones and mobile handsets
  • Cell phones and smartphones
  • LED light for image capture, auto focus, and white balance
  • Handset video light (torch light)
  • Digital cameras
  • Portable applications

Micrel MIC2870/1 LED Drivers



  • Micrel