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.

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