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MIC3203 - High-Brightness LED Driver Controller

General Description

The MIC3203 is a hysteretic, step-down, constant-current, High-Brightness LED (HB LED) driver.

It provides an ideal solution for interior/exterior lighting, architectural and ambient lighting, LED bulbs, and other general illumination applications.

Key Features

  • 4.5V to 42V input voltage range High efficiency (>90%) ±5% LED current accuracy MIC3203: Dither enabled for low EMI MIC3203-1: Dither disabled High-side current sense Dedicated dimming control input Hysteretic control (no compensation!) Up to 1.5MHz switching frequency Adjustable constant LED current Over-temperature protection.
  • 40°C to +125°C junction temperature range.

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Datasheet Details

Part number MIC3203
Manufacturer Micrel Semiconductor
File Size 934.94 KB
Description High-Brightness LED Driver Controller
Datasheet download datasheet MIC3203 Datasheet

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Other Datasheets by Micrel Semiconductor

Part Number Description
MIC3203-1 High-Brightness LED Driver Controller
MIC3201 High Brightness LED Driver
MIC3202 High-Brightness LED Driver
MIC3202-1 High-Brightness LED Driver
MIC3223 High Power Boost LED Driver

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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MIC3203/MIC3203-1 www.DataSheet4U.com High-Brightness LED Driver Controller with High-Side Current Sense General Description The MIC3203 is a hysteretic, step-down, constant-current, High-Brightness LED (HB LED) driver. It provides an ideal solution for interior/exterior lighting, architectural and ambient lighting, LED bulbs, and other general illumination applications. The MIC3203 is well suited for lighting applications requiring a wide-input voltage range. The hysteretic control gives good supply rejection and fast response during load transients and PWM dimming. The high-side current sensing and on-chip current-sense amplifier delivers LED current with ±5% accuracy. An external high-side currentsense resistor is used to set the output current.