ACT6360

ACT6360 Rev0, 23-May-08 www.DataSheet4U.com High-Efficiency, 40V Step-Up WLED Bias Supplies FEATURES High-Efficiency DC/DC WLED Bias Supply Internal 40V, 0.55Ω Power MOSFET Up to 10 WLEDs per String 1000mA Peak Current Supports Analog and PWM LED Dimming Integrated Over-Voltage Protection (OVP) Thermal Shutdown Cycle-by-Cycle Over Current Protection Tiny SOT23-6 Package GENERAL DESCRIPTION The ACT6360 step-up DC/DC converter drives white LEDs with an externally programmable constant current. This device features an integrated, 40V power MOSFET that is capable of driving up to ten white LEDs in series, providing inherent current matching for uniform brightness. WLED brightness adjustment is easily achieved via simple external circuitry, which accepts either a PWM or an analog dimming control signal. The ACT6360 features a variety of protection circuits, including integrated over voltage protection (OVP), cycle-by-cycle current limiting, and thermal shutdown protection circuitry. The ACT6360 has a 1000mA current limit, and is available in a small 6-pin SOT23-6 package. 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 ACT6360 ON OFF OV ROV1 EN G FB RFB COUT Innovative PowerTM -1- www.active-semi.com Copyright © 2008 Active-Semi, Inc. www.DataSheet4U.com ACT6360 Rev0, 23-May-08 ORDERING INFORMATION PART NUMBER A...