MIC2298 LED driver circuit diagram


Posted on Mar 28, 2007

Merry Company (Micrellnc) introduced the industry's smallest and most powerful of the most used in portable electronic devices each LED driver MIC2298.


MIC2298 LED driver circuit diagram
Click here to download the full size of the above Circuit.

The device is a 7W efficient boost DC / DC converter, and in the form of a small 3mm 3mm MLF package. MlC2298 for mobile telephones, the digital assistant (PDA) and digital camera flash and application design of the torch lighting. MIC2298 can ensure 3.5A switching current. Its white LED brightness can be applied to the brightness setting pin voltage or pulse width modulation (PWM) signal dynamic control. When this IC work at 1MHz fixed switching frequency of imprison, efficiency above 86%. This high efficiency makes the battery life longer, coupled with its ultra-small size, makes Micrel's MIC2298 become used to drive the advanced mobile phones and PDA provided in each high-brightness white LED the best solution. MIC2298 solution requires only a small 2.2 H inductor and small ceramic capacitors, making it possible to minimize the volume and cost of the solution is also minimized. Its operating input voltage range of 2.5 ~ 10V. MlC2298 LED drive circuit is shown.




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