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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 250mV. Tiny package type TSOT-23-6, XDFN-8L 2x2 and WDFN-8L 2x2 packages provide the best solution for PCB space saving and total BOM cost.

Applications

  • Cellular Phones
  • Digital Cameras
  • PDAs and Smart Phones
  • Porbable Instruments
  • MP3 Player
  • OLED Power
Key Spec.
RT9285C
Status Active
Vin (min) (V) 2.7
Vin (max) (V) 5.5
Vout (max) (V) 22
Output Adj. Method Resistor
Iq (typ) (mA) 0.3
SW Current Limit (typ) (A) 0.4
Freq (typ) (kHz) 1000
Ron (typ) (Ohm) 0.75
Features Enable Input;Internal Compensation;OCP;OVP;Power Good;Stable with Ceramic Capacitor
Package Type TSOT-26;WDFN2x2-8;XDFN2x2-8
Features
  • 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
Part NumberPackage TypePackage Qty.Free SampleDistributorStockBuy From Authorized Distributor
RT9285CGQWWDFN2x2-82,500 Request Digikey 37 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
Please confirm with our distributor or sales representative for actual stock status.
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