General Description
The MIC2870 is a high-current, high-efficiency flash LED driver for
one or two high-brightness camera flash LEDs.
The LED driver current is generated by an integrated inductive
boost converter with 2MHz switching frequency which allows the use
of a very-small inductor and output capacitor. These features make
the MIC2870 an ideal solution for high-resolution camera phone LED
flashlight driver applications.
Features
• Up to 1.5A flash LED driving current
− 2.7V to 5.0V input voltage range
• High-efficiency 2MHz VF adaptive boost driver
• Configurable 1 or 2 channel(s) WLED driver
• LED driving current soft-start
• Control through I2C interface or external pins
• Flash inhibit function for GSM pulse synchronization
• True load disconnect
• Flash time-out protection
• 1µA shutdown current
• Available in 16-pin 2mm × 2mm TQFN package
Applications
• Camera phones/mobile handsets
• Cellular phones/smart phones
• LED light for image capture/auto focus/white balance
• Handset video light (torch light)
• Digital cameras
• Portable applications
