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MIC2291

Part Number	MIC2291
Manufacturer	Micrel Semiconductor
Description	1.2A PWM Boost Regulator Photo Flash LED Driver
Published	Mar 26, 2005
Detailed Description	MIC2291 Micrel MIC2291 1.2A PWM Boost Regulator Photo Flash LED Driver General Description The MIC2291 is a 1.2MHz Pu...
Datasheet	MIC2291 PDF File

Overview

MIC2291 Micrel MIC2291 1.
2A PWM Boost Regulator Photo Flash LED Driver General Description The MIC2291 is a 1.
2MHz Pulse Width Modulation (PWM), boost-switching regulator that is optimized for high-current, white LED photo flash applications.
With a guaranteed switch current of 1.
2A, the MIC2291 easily drives a string of 3 white LEDs in series at 100mA, ensuring a high level of brightness and eliminating several ballast resistors.
The MIC2291 implements a constant frequency, 1.
2MHz PWM control scheme.
The high frequency PWM operation saves board space by reducing external component sizes.
The added benefit of the constant frequency PWM scheme, in contrast to variable frequency topologies,...

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