Active-Semi ACT4523A
ACT4523A 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 ACT4523A achieves higher efficiency than traditional constant current switching regulators by eliminating its associated power loss on the sensing resistor. ACT4523A provides up to 3.5A output current at 250kHz switching frequency.| Part No. | ACT4523A |
|---|---|
| Datasheet | ACT4523A Download |
| Manufacturer |  Active-Semi |
| Description | Wide-Input Sensorless CC/CV Step-Down DC/DC Converter |
| Buy | Stock & Price |
FEATURES
● 40V Input Voltage Surge● 36V Steady State Operation
● Up to 3.5A Output Current
● Output Voltage up to 12V
● 250kHz Switching Frequency
● 91% Efficiency (Vout = 5V@3.5A at Vin = 12V)
● Patented ActiveCC Sensorless Constant Current Control − Integrated Current Control Improves Efficiency, Lowers Cost, and Reduces Component Count
● Resistor Programmable − Current Limit from 1.5A to 4.0A − Patented Cable Compensation from 0 to 0.25Ω
● ±6.5% 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 CC/CV Supply
GENERAL DESCRIPTION
Active CC is a patented control scheme to achieve highest accuracy with sensorless constant current control.
