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RT9285C - Diode Embedded White LED Driver

Description

The RT9285C is a high frequency asynchronous boost converter with internal diode, which can support 2 to 5 White LEDs for backlighting and OLED power supply.

The Internal soft start function can reduce the inrush current.

Features

  • l l l l l l l l l l l VIN Operating Range : 2.7V to 5.5V Up to 85% Efficiency 22V Internal Power NMOS 1MHz Switching Frequency Built-in Diode Digital Dimming with Zero-Inrush Input UVLO Protection Output Over Voltage Protection Internal Soft Start and Compensation TSOT-23-6, 8-Lead XDFN and WDFN Package RoHS Compliant and 100% Lead (Pb)-Free.

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Datasheet Details

Part number RT9285C
Manufacturer Richtek Technology
File Size 216.21 KB
Description Diode Embedded White LED Driver
Datasheet download datasheet RT9285C Datasheet

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Full PDF Text Transcription

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Preliminary RT9285C Tiny Package, High Performance, Diode Embedded White LED Driver General Description The RT9285C is a high frequency asynchronous boost converter with internal diode, which can support 2 to 5 White LEDs for backlighting and OLED power supply. The Internal soft start function can reduce the inrush current. The device operates with 1MHz fixed switching frequency to allow small external components and to simplify possible EMI problems. The device comes with 20V over voltage protection to allow inexpensive and small-output capacitors with lower voltage rating. The LED current is initially set with the external sense resistor RSET , and the feedback voltage is 250 mV.
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