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RT4533 - Asynchronous Boost Converter

General Description

The RT4533/A is a highly integrated LED driver IC capable of driving 10 WLEDs in series.

It is composed of a current mode Boost converter integrated with a 36.5V/1.2A power switch.

The RT4533/A supports a wide input voltage range from 2.5V to 5.5V and runs at a fixed frequency of 1.1MHz.

Key Features

  • 2.5V to 5.5V Input Voltage Range.
  • 36.5V Open LED Protection for 10 WLEDs.
  • PWM Dimming Brightness Control.
  • 200mV / 300mV Reference Voltage with ±2% Accuracy.
  • 1.1MHz Switching Frequency.
  • Built-In Soft-Start.
  • Over-Temperature Protection.
  • Internal Compensation.
  • Current Limit.
  • RoHS Compliant and Halogen Free Ordering Information RT4533/A Package Type J6 : TSOT-23-6 Lead Plating System G : Green (Halogen Free and Pb Free) Note : Feedback Voltage R.

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Datasheet Details

Part number RT4533
Manufacturer Richtek
File Size 144.21 KB
Description Asynchronous Boost Converter
Datasheet download datasheet RT4533 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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® RT4533/A Asynchronous Boost Converter for 10 WLEDs General Description The RT4533/A is a highly integrated LED driver IC capable of driving 10 WLEDs in series. It is composed of a current mode Boost converter integrated with a 36.5V/1.2A power switch. The RT4533/A supports a wide input voltage range from 2.5V to 5.5V and runs at a fixed frequency of 1.1MHz. The LED current is set via an external resistor and the feedback voltage is regulated to 200mV / 300mV. For brightness dimming, the RT4533/A supports PWM dimming which determines the feedback reference voltage. Applications  Cellular Phones  Digital Cameras  Probable Instruments Marking Information RT4533GJ6 0R=DNN 0R= : Product Code DNN : Date Code RT4533AGJ6 1L=DNN 1L= : Product Code DNN : Date Code Features  2.5V to 5.