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ACT4533C

40 V, 3.5 A Sensorless CC/CV Step-Down DC/DC Converter; ? 40 V input voltage surge\n? 36 V steady state operation\n? Up to 3.5 A output current\n? Output voltage up to 18 V\n? 125 kHz switching frequency eases EMI design\n? 91% efficiency (Vout = 5V @ 2.4 A at Vin = 12 V)\n? Stable with low ESR ceramic capacitors to allow low-profile designs\n? Integrated over-voltage protection\n? Excellent EMI performance\n? Patented Active CC sensorless constant current control improves efficiency and lowers cost\n? Resistor programmable\n? 2% feedback voltage accuracy\n? Advanced feature set\n;

Qorvo's ACT4533C 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. ACT4533C provides up to 3.5 A output current at 125 kHz switching frequency.\nActive CC is a patented control scheme to achieve high-accuracy sensorless constant current control. Active CC eliminates the expensive, high accuracy current sense resistor, making it ideal for Cigarette Lighter Adapter (CLA) applications.\nACT4533C integrates adaptive gate drive to achieve excellent EMI performance, passing the EN55022 Class B EMC standard without adding additional EMI components while maintaining high conversion efficiency.\nProtection features include cycle-by-cycle current limit, thermal shutdown and frequency foldback at short circuit.\nACT4533C is available in a SOP-8EP package and requires very few external components for operation.\n

ACT4533C

Wide-Input Sensorless CC/CV Step-Down DC/DC Converter

ACT4533CYH-T

Wide-Input Sensorless CC/CV Step-Down DC/DC Converter

ACT4533YH-T

Wide-InputSensorlessCC/CVStep-DownDC/DCConverter

GENERALDESCRIPTION ACT4533isawideinputvoltage,highefficiencyActiveCCstep-downDC/DCconverterthatoperatesineitherCV(ConstantOutputVoltage)modeorCC(ConstantOutputCurrent)mode.ACT4533providesupto3Aoutputcurrentat125kHzswitchingfrequency. FEATURES ?40VInputV

ADR4533

UltralowNoise,HighAccuracy

ADR4533

UltralowNoise,HighAccuracyVoltageReferences

GENERALDESCRIPTION TheADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ ADR4550devicesarehighprecision,lowpower,lownoise voltagereferencesfeaturing±0.02B,C,andDgrade maximuminitialerror,excellenttemperaturestability,andlow outputnoise. Thisfamilyofvoltagereferencesuses