ACT4527

FEATURES USB-PD Support Passes USB-IF Certification: Test ID 1010060 40V Input Voltage Surge 4.5V-36V Operational Input Voltage 5.1V/9.1V/12.1V Output with +/-1% Accuracy Up to 3.0A Output current Constant Current Regulation Limit Hiccup Mode Protection at Output Short >90% Efficiency at Full Load 0.5mA Low Standby Input Current 5.1V/9.1V/12.1V Output Over-Voltage Protection Cord Voltage Compensation Meet EN55022 Class B Radiated EMI Standard SOP-8EP Package APPLICATIONS Car Charger Cigarette Lighter Adaptor (CLA) Rechargeable Portable Device CV/CC regulation DC/DC converter TYPICAL APPLICATION CIRCUIT 4.5V to 40V C1 C2 47μF 10μF C3 CSN HSB 22nF IN SW ACT4527 CSP GND PDC D1 SK54L L1 40μH C4 22μF Rcs 20mΩ C5 C6 220μF 2.2μF I/O CC1 CC2 USB-PD Controller ACT4527 40V/3.0A CV/CC Buck Converter Featuring USB-PD GENERAL DESCRIPTION ACT4527 is a wide input voltage, high efficiency stepdown DC/DC converter that operates in either CV (Constant Output Voltage) mode or CC (Constant Output Current) mode. ACT4527 has an interface for USB-PD control via a tri-state digital pin. Vout is 5.1V if this pin is floating, Vout is 9.1V when this pin voltage is less than 0.8V and Vout is 12.1V while this pin voltage is more than 2.0V. ACT4527 has accurate output current limits under constant current regulation. It provides up to 3.0A output current at 125kHz switching frequency. ACT4527 utilizes adaptive drive technique to achieve good EMI pe...