DatasheetsPDF.com

ACT4533B

Active-Semi
Part Number ACT4533B
Manufacturer Active-Semi
Description Wide-Input Sensorless CC/CV Step-Down DC/DC Converter
Published May 7, 2016
Detailed Description ACT4533A/B Rev 0, 14-Aug-13 Wide-Input Sensorless CC/CV Step-Down DC/DC Converter FEATURES • 40V Input Voltage Surge • ...
Datasheet PDF File ACT4533B PDF File

ACT4533B
ACT4533B


Overview
ACT4533A/B Rev 0, 14-Aug-13 Wide-Input Sensorless CC/CV Step-Down DC/DC Converter FEATURES • 40V Input Voltage Surge • 36V Steady State Operation • Up to 3.
5A output current • Output Voltage up to 12V • 125kHz Switching Frequency Eases EMI Design • 91% Efficiency (Vout=5V@2.
4A at Vin=12V) • Stable with Low-ESR Ceramic Capacitors to Allow Low-Profile Designs • Integrated Over Voltage Protection • Excellent EMI Performance • Patented ActiveCC Sensorless Constant Current Control Improves Efficiency and Lowers Cost.
• Resistor Programmable − Current Limit from 1.
5A to 4.
0A − Patented Cable Compensation from 0 to 0.
25Ω • ±7.
5% CC Accuracy − Compensation of Input /Output Voltage Change − Temperature Compensation − Independent of inductance and Inductor DCR • 2% Feedback Voltage Accuracy • Advanced Feature Set − Integrated Soft Start − Thermal Shutdown − Secondary Cycle-by-Cycle Current Limit − Protection Against Shorted ISET Pin • SOP-8EP Package APPLICATIONS • Car Charger/ Adaptor • Rechargeable Portable Devices • General-Purpose CV/CC Power Supply GENERAL DESCRIPTION ACT4533A/B 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.
ACT4533A/B provides up to 3.
5A output current at 125kHz switching frequency.
ActiveCC is a patented control scheme to achieve high-accuracy sensorless constant current control.
ActiveCC eliminates the expensive, high accuracy current sense resistor, making it ideal for CLA applications.
ACT4533A/B integrates adaptive gate drive to achieve excellent EMI performance passing EN55022 Class B EMC standard without adding additional EMI components while maintaining high conversion efficiency.
Protection features include cycle-by-cycle current limit, thermal shutdown, and frequency foldback at short circuit.
The devices are available in a SOP8EP package and require very few external devices for operation.
The only difference between ...



Similar Datasheet


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site. (Privacy Policy & Contact)