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The RT9368 is a high efficiency and cost effective charge pump white LED driver. It supports up to 4 white LEDs with regulated constant current for uniform intensity. The RT9368 maintains the highest efficiency by utilizing a x1/x1.5/x2 charge pump and low dropout current regulators.
User can easily configure each LED current from 1.25mA to 20mA by a PWM dimming control. The dimming of white LEDs current can be achieved by applying a PWM signal to the EN pin.
RT9368 is available in a WQFN 3x3-16L package.

Applications

  • Mobile Phone, DSC, MP3
  • White LED Backlighting
  • LCD Display Supply
Key Spec.
RT9368
Status EOL
Recommended Alternative  RT9367C
Vin (min) (V) 2.8
Vin (max) (V) 5
SW Freq (typ) (kHz) 250
Number of LEDs (max) (pcs) 4
Iout (max)/channel (mA) 20
Iq (typ) (mA) 1;2.5
Dimming Control PWM
Topology CP+CS
Features Enable Input;OVP
Package Type WQFN-3x3-16
Features
  • Very High Efficiency Over 80% of Battery Life
  • Support up to 4 White LEDs
  • Support up to 80mA Output Current
  • 1% Typical LED Current Matching
  • Soft Start Function
  • Auto Charge Pump Mode Selection
  • 250kHz Fixed Frequency Oscillator
  • Output Over Voltage Protection
  • PWM Dimming Control
  • Low Input Noise and EMI
  • RoHS Compliant and 100% Lead (Pb)-Free
Please confirm with our distributor or sales representative for actual stock status.
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