Mic2299 3.5a Minimum, 2mhz High Brightness Led Driver

  The MIC2299 is a high power boost-switching Regulator that is optimized for constant-current control. The MIC2299 is capable of driving up to 2 series 1A white LED for Photoflash and other applications. The feedback voltage is only 200mV, minimizing power dissipation in constantcurrent control applications, and hence extends Battery life. The MIC2299 has a brightness pin that allows for a programmable torch mode as well as full Flash with a single pin when driving high current LEDs The MIC2299 implements a constant frequency 2MHz PWM control scheme to make the smallest possible design. The MIC2299 s 2MHz operation avoids signal interference in the AM band. The 2.5V to 10V input voltage range of MIC2299 allows direct operation from 1- and 2-cell Li-Ion as well as 3- to 4cell NiCad/ NiMH/ Alkaline or lithium batteries. Maximum Battery life is assured with a low 1uA shutdown current. The MIC2299 is available in a low profile 12-pin 3mm x 3mm MLF? package. Data sheets and support documentation can be found on Micrel?s web site at: www.micrel.com. Features
Item: MIC2299
File Size : 68 KB
Pages : 14 Pages

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Micrel Semiconductor
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