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ACT4065ASH-T Datasheet(PDF) 1 Page - Active-Semi, Inc |
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ACT4065ASH-T Datasheet(HTML) 1 Page - Active-Semi, Inc |
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1 / 10 page  Innovative Power TM - 1 - www.active-semi.com Copyright © 2012 Active-Semi, Inc. ACT4065A High Input 2A Step Down Converter FEATURES • 2A Output Current • Up to 95% Efficiency • 6.0V to 30V Input Range • 210kHz Switching Frequency • Adjustable Output Voltage • Cycle-by-Cycle Current Limit Protection • Thermal Shutdown Protection • Frequency Foldback at Short Circuit • Stability with Wide Range of Capacitors, Including Low ESR Ceramic Capacitors • SOP-8 Package APPLICATIONS • TFT LCD Monitors • Portable DVDs • Car-Powered or Battery-Powered Equip- ments • Set-Top Boxes • Telecom Power Supplies • DSL and Cable Modems and Routers • Termination Supplies GENERAL DESCRIPTION The ACT4065A is a current-mode step-down DC/DC converter that generates up to 2A output current at 210kHz switching frequency. The ACT4065A is highly efficient with peak effi- ciency at 95% when in operation. Protection fea- tures include cycle-by-cycle current limit, thermal shutdown, and frequency foldback at short circuit. The ACT4065A is available in SOP-8 package and requires very few external devices for operation. Note: ACT4065A is the drop-in replacement for ACT4065 with feedback resistance value change. Rev 0, 23-Apr-12 ® Load Current (mA) 10 100 1000 10000 95 90 85 80 75 70 Efficiency vs. Load current VIN = 12V VIN = 24V VOUT = 5V |
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