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MIC3287 - PWM White LED Driver

General Description

The MIC3287 is a 1.2MHz pulse width modulated (PWM) step-up switching regulator that is optimized for constant current white LED driving applications.

Key Features

  • 2.8V to 5.5V Input Voltage 350mA Switch Current 1.2 MHz PWM Operation 250mV Feedback Voltage 24V Output Over-Voltage Protection (OVP) Option.

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Datasheet Details

Part number MIC3287
Manufacturer Micrel Semiconductor
File Size 367.13 KB
Description PWM White LED Driver
Datasheet download datasheet MIC3287 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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www.DataSheet4U.com MIC3287 Micrel, Inc. MIC3287 1.2MHz PWM White LED Driver with OVP in Thin SOT-23 and 2mm x 2mm MFL™ General Description The MIC3287 is a 1.2MHz pulse width modulated (PWM) step-up switching regulator that is optimized for constant current white LED driving applications. With a maximum output voltage of 24V and a switch current of over 350mA, the MIC3287 drives a string of up to 4 white LEDs in series, ensuring uniform brightness and eliminating several ballast resistors. The MIC3287 implements a constant frequency 1.2MHz PWM current-mode control scheme. The high frequency PWM operation saves board space by reducing external component sizes.