Step-Down DC/DC Converter
FEATURES
• 40V Input Voltage Surge • Up to 1.5A Constant Output Current • Output Voltage up to 12V • Patent Pending Acti...
Description
FEATURES
40V Input Voltage Surge 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
ACT4515
Wide Input Sensorless CC/CV Step-Down DC/DC Converter
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 hi...
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