Tiny Package, High Performance, Constant Current Switching Regulator for White LED


Update Alert Share

The RT9284A/B is a compact, high efficient and high integration LED driver. Internal 22V MOSFET can support 2 to 5 White LEDs for backlighting and camera flashing.

Highly integration and internal compensation network minimizes as 5 external component counts. Optimized operation frequency can meet the requirement of small LC filters value and low operation current with high efficiency. Internal soft start function can reduce the inrush current. Tiny package type of TSOT-23-5 and TSOT-23-6 packages provide the best solution for PCB space saving and total BOM cost.


  • Camera Flash White LED
  • Mobile Phone, Smart Phone LED Backlight
  • PDA LED Backlight
  • Digital Still Camera
  • Camcorder
Key Spec.
RT9284A RT9284B
Status Active Active
Vin (min) (V) 2.7 2.7
Vin (max) (V) 5.5 5.5
Vout (min) (V) 3.5 6
Vout (max) (V) 20 20
Output Adj. Method Resistor Resistor
Iq (typ) (mA) 0.3 0.3
SW Current Limit (typ) (A) 0.75 0.75
Freq (typ) (kHz) 1200 1200
Freq (min) (kHz) 900 900
Freq (max) (kHz) 1500 1500
Ron (typ) (Ohm) 0.75 0.75
Features Enable Input;Internal Compensation;OCP;OVP Enable Input;Internal Compensation;OCP;OVP
Package Type TSOT-25;TSOT-26 TSOT-25;TSOT-26
  • VIN Operating Range : 2.7V to 5.5V
  • Maximum Output Voltage up to 20V
  • Dimming with Zero-inrush and Wide Frequency
  • Over Voltage Protection
  • Output Current up to 100mA at VOUT = 12V.
  • Zero Shutdown Supply Current
  • Minimize the External Component
  • Small LC Filter
  • Internal Soft Start
  • RoHS Compliant and 100% Lead (Pb)-Free
TitleLast UpdateShareDownload
Tiny Package, High Performance, Constant Current Switching Regulator for White LED2018/06/28
Part NumberPackage TypePackage Qty.Free SampleBuy From Authorized Distributor
RT9284A-20GJ6ETSOT-263000 Not available Buy from Distributor