ACT6311

FEATURES Adjustable Output Voltage Drives OLEDs or White LEDs 30V High Voltage Switch 1MHz Switching Frequency Tiny Inductors and Capacitors Tiny SOT23-5 Package APPLICATIONS OLED Applications Cell Phones Digital Cameras PDAs, Laptops MP3 Players GPS ACT6311 Rev 4, 15-Nov-12 White LED/OLED Step-Up Converter GENERAL DESCRIPTION The ACT6311 step-up DC/DC converter is optimized for driving OLEDs or white LEDs. It can provide an output voltage up to 24V. The device is capable of driving up to seven LEDs in series from a Lithium-Ion battery, with inherent current matching and uniform brightness. The ACT6311 incorporates a 30V high voltage switch. The device operates at 1MHz and allows the use of few external components. The ACT6311 is available in the tiny SOT23-5 package. ACT6311-0001 Efficiency (%) 100 80 60 40 20 0 0 Efficiency vs. Output Current VIN = 3.6V VIN = 3V VIN = 3.6V VIN = 3V 5 10 15 20 25 30 35 Output Current (mA) Figure 1. Typical Application Circuit Innovative PowerTM - 1 - www.active-semi.com Copyright © 2012 Active-Semi, Inc. ACT6311 Rev 4, 15-Nov-12 G Figure 2: Application as White LED Drive ORDERING INFORMATION PART NUMBER TEMPERATURE RANGE ACT6311UC-T -40°C to 85°C PIN CONFIGURATION PACKAGE SOT23-5 PINS 5 TOP MARK PACKING YCXB TAPE & REEL SW 1 5 IN G 2 ACT6311 UC FB 3 4 SHDN SOT23-5 PIN DESCRIPTION PIN NUMBER 1 2 3 4 5 PIN NAME SW G FB SHDN IN PIN DESCRIPTION Switch Output. Connect this pin to the i...