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RT4533 Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT4533 Datasheet(HTML) 1 Page - Richtek Technology Corporation |
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1 / 11 page  RT4533/A ® DS4533/A-02 September 2015 www.richtek.com 1 © Copyright 2015 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. Marking Information Ordering Information Note : Richtek products are : RoHS compliant and compatible with the current require- ments of IPC/JEDEC J-STD-020. Suitable for use in SnPb or Pb-free soldering processes. Simplified Application Circuit Applications Cellular Phones Digital Cameras Probable Instruments 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. 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 0R=DNN 0R= : Product Code DNN : Date Code LX FB GND RT4533/A VIN EN L VIN VOUT VOUT Enable D RT4533GJ6 RT4533AGJ6 1L=DNN 1L= : Product Code DNN : Date Code RT4533/A Package Type J6 : TSOT-23-6 Lead Plating System G : Green (Halogen Free and Pb Free) Feedback Voltage RT4533 : 200mV RT4533A : 300mV |
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