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ACT4515 Datasheet(PDF) 1 Page - Active-Semi, Inc |
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ACT4515 Datasheet(HTML) 1 Page - Active-Semi, Inc |
1 / 16 page Innovative Power TM - 1 - www.active-semi.com Copyright © 2012 Active-Semi, Inc. FEATURES • Up to 40V Input Voltage • Up to 1.5A Constant Output Current • Output Voltage up to 12V • Patent Pending Active CC Constant Current Control − Integrated Current Control Improves Efficiency, Lowers Cost, and Reduces Component Count • Resistor Programmable Outputs − Current Limit from 400mA to 1500mA − Patented cable compensation from 0Ω to 0.5Ω • ±7.5% CC Accuracy − Compensation of Input/ Output Voltage Change − Temperature Compensation − Independent of Inductance and Inductor DCR • 2% Feedback Voltage Accuracy • Up to 93% Efficiency • 210kHz Switching Frequency Eases EMI Design • Advanced Feature Set − Integrated Soft Start − Thermal Shutdown − Secondary Cycle-by-Cycle Current Limit − Protection Against Shorted ISET Pin • SOP-8 Package APPLICATIONS • Car Charger • Rechargeable Portable Devices • General-Purpose CC/CV Supply GENERAL DESCRIPTION ACT4515 is a wide input voltage, high efficiency Active CC step-down DC/DC converter that operates in either CV (Constant Output Voltage) mode or CC (Constant Output Current) mode. ACT4515 provides up to 1.5A output current at 210kHz switching frequency. Active CC is a patent-pending control scheme to achieve highest accuracy sensorless constant current control. Active CC eliminates the expensive, high accuracy current sense resistor, making it ideal for battery charging applications and high- brightness LED drive for architectural lighting. The ACT4515 achieves higher efficiency than traditional constant current switching regulators by eliminating the sense resistor and its associated power loss. Protection features include cycle-by-cycle current limit, thermal shutdown, and frequency foldback at short circuit. The devices are available in a SOP-8 package and require very few external devices for operation. ACT4515 Wide-Input Sensorless CC/CV Step-Down DC/DC Converter Rev 6, 14-Nov-12 CC/CV Curve vs. Load Current 6.0 5.0 4.0 3.0 2.0 1.0 0.0 IOUT Current (mA) 0 250 500 750 1000 1250 1500 V0UT = 5V VIN = 12V VIN = 24V |
Similar Part No. - ACT4515_12 |
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Similar Description - ACT4515_12 |
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