MIC2297 - 40V PWM Boost Regulator White LED Driver
Micrel Semiconductor
General Description
The MIC2297 is a 600KHz PWM boost-switching regulator that is optimized for driving 6-10 series white LEDs.
Key Features
2.5V to 10V input voltage range Output voltage up to 40V 1.2A switch current 600KHz PWM operation Trimmed 200mV feedback voltage Output over voltage protection (fixed or adjustable) PWM Brightness Control DAC Brightness Control.
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MIC2297 www.DataSheet4U.com 40V PWM Boost Regulator White LED Driver General Description The MIC2297 is a 600KHz PWM boost-switching regulator that is optimized for drivi...
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is a 600KHz PWM boost-switching regulator that is optimized for driving 6-10 series white LEDs. With its internal 40V switch and a guaranteed switch current of 1.2A, the MIC2297 easily drives a string of 10 white LEDs in series at 20mA, ensuring a high level of brightness and eliminating several ballast resistors. The MIC2297 implements constant frequency 600KHz PWM control. The high frequency PWM operation saves board space by reducing external component sizes. The added benefit of the constant frequency PWM operation is much lower noise and input ripple injected back to the battery source than with variable frequency to
MIC2297 Datasheet
