Active-Semi ACT4514
ACT4514 is a wide input voltage, high efficiency ActiveCC step-down DC/DC converter that operates in either CV (Constant Output Voltage) mode or CC (Constant Output Current) mode. The ACT4514 achieves higher efficiency than traditional constant current switching regulators by eliminating the sense resistor and its associated power loss. ACT4514 provides up to 1.5A output current at 210kHz switching frequency.| Part No. | ACT4514 |
|---|---|
| Datasheet | ACT4514 Download |
| Manufacturer |  Active-Semi |
| Description | Wide-Input Sensorless CC/CV Step-Down DC/DC Converter |
| Buy | Stock & Price |
FEATURES
● Up to 40V Input Voltage● Up to 1.5A Constant Output Current
● Output Voltage up to 12V
● Patent Pending ActiveCC 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 DC Cable Compensation from 0Ω to 0.5Ω
● 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 Power Supply
GENERAL DESCRIPTION
ActiveCC is a patent-pending control scheme to achieve highest accuracy sensorless constant current control. ActiveCC eliminates the expensive, high accuracy current sense resistor, making it ideal for battery charging applications and highbrightness LED drive for architectural lighting.
