Description
ACT6359 Rev0, 13-May-08 www.DataSheet4U.com High-Efficiency, 40V Step-Up WLED Bias Supplies .
The ACT6359 step-up DC/DC converter drives white LEDs with an externally programmable constant current.
Features
* High-Efficiency DC/DC WLED Bias Supply
* Internal 40V, 0.55Ω Power MOSFET
* Up to 10 WLEDs per String
* 500mA Peak Current
* Supports Analog and PWM LED Dimming
* Integrated Over-Voltage Protection (OVP)
* Thermal Shutdown
* Cycle-by-
Applications
* TFT LCD Displays
* Smart Phones
* Portable Media Players
* GPS/Personal Navigation Devices
SIMPLIFIED APPLICATION CIRCUIT
L1 Up to 10 WLEDs VOUT ROV2
D1
VIN
CIN
IN
SW
ACT6359
ON OFF
OV ROV1
EN G
FB RFB COUT
Innovative PowerTM
-1-
www. active-semi. com Cop