MIC2873 Datasheet, PDF (1/24 Pages) Micrel Semiconductor – 1.2A High-Brightness Flash LED Driver with Single-Wire Serial Interface

MIC2873
1.2A High-Brightness Flash LED Driver with
Single-Wire Serial Interface
General Description
The MIC2873 is a high-current, high-efficiency flash LED
driver. The LED driver current is generated by an
integrated inductive boost converter with a 2MHz switching
frequency which allows for the use of very small inductor
and output capacitor. These features make the MIC2873
an ideal solution for high-resolution camera phone LED
flash light driver applications.
MIC2873 operates in either flash or torch modes that can
be controlled through the single-wire serial interface and/or
external control pin. A robust single-wire serial interface
allows the host processor to control the LED current and
brightness. The MIC2873 is available in a 9-bump 1.30mm
× 1.30mm WLCSP package.
Datasheets and support documentation are available on
Micrel’s web site at: www.micrel.com.
Features
• Up to 1.2A flash LED driving current
• Highly-efficient synchronous boost driver
• Control through single-wire serial interface or external
control pin
• Input voltage range: 2.7V to 5.5V
• True load disconnect
• Configurable safety time-out protection
• Output overvoltage protection (OVP)
• LED short-circuitdetection and protection
• 1µA shutdown current
• Available in 9-bump 1.30mm × 1.30mm WLCSP
package
Applications
• Camera phones/mobile handsets
• Cell phones/smartphones
• LED light for image capture/auto focus/white balance
• Handset video light (torch light)
• Digital cameras
• Portable applications
Typical Application
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
July 17 2014
Revision 1.0