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MIC2289C - White LED Driver Internal Schottky Diode/OVP

Description

The MIC2289C is a PWM (pulse width modulated), boostswitching regulator that is optimized for constant-current white LED driver applications.

Features

  • an internal Schottky diode and three levels of output overvoltage protection providing a small size and efficient DC/DC solution that requires only four external components. To optimize efficiency, the feedback voltage is set to only 95mV. This reduces power dissipation in the current set resistor and allows the lowest total output voltage, hence minimal current draw from the battery. The MIC2289C implements a constant frequency 1.2MHz PWM control scheme. The high frequency, PWM operation saves.

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Datasheet Details

Part number MIC2289C
Manufacturer MICREL
File Size 242.64 KB
Description White LED Driver Internal Schottky Diode/OVP
Datasheet download datasheet MIC2289C Datasheet

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Full PDF Text Transcription

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MIC2289C White LED Driver Internal Schottky Diode and OVP General Description The MIC2289C is a PWM (pulse width modulated), boostswitching regulator that is optimized for constant-current white LED driver applications. The MIC2289C features an internal Schottky diode and three levels of output overvoltage protection providing a small size and efficient DC/DC solution that requires only four external components. To optimize efficiency, the feedback voltage is set to only 95mV. This reduces power dissipation in the current set resistor and allows the lowest total output voltage, hence minimal current draw from the battery. The MIC2289C implements a constant frequency 1.2MHz PWM control scheme. The high frequency, PWM operation saves board space by reducing external component sizes.
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