Camera flash LED driver solutions offer ultra-compact benefits
Operating from 2.7 V to 5.5 V and featuring up to 92 percent efficiency, the MIC2873/MIC2874 solutions are ideally suited for Li-Ion battery operated portable applications such as phone cameras, tablet computers, handset video equipment, and digital cameras.
High switching frequencies (2 MHz for the MIC2873 and 4 MHz for the MIC2874) allow for the use of a miniature size chip inductor and small input/output capacitors, thereby reducing the total power footprint to a solution size to less than 10 mm squared. In addition, the devices can operate in either a flash or torch mode with the ability to provide a boost or linear output using a single wire communication interface or through external pins.
Micrel’s new generation of high brightness Flash LED drivers address the growing market of tablets and mobile phones by reducing solution size for LED flash applications with a 40 percent reduction in package size.
The high efficiency and low standby current of the MIC2873/MIC2874 helps to increase battery life especially when operating as video flash or when in torch mode.
These parts are fully protected against overvoltage and overcurrent conditions with a configurable time-out feature. In addition, these ICs provide LED short circuit detection and a true load disconnect feature for best system reliability. The MIC2873/MIC2874 devices are fully specified with an ambient temperature range from -40 to 85 °C.
Availability and Pricing
The MIC2873/MIC2874 are available in volume with 1,000 quantities pricing starting at $0.26/$0.30 respectively.
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