Qorvo's ACT4523A 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. ACT4523A provides up to 3.5 A output current at 250 kHz switching frequency.
Active CC is a patented control scheme to achieve highest accuracy with sensorless constant current control. Active CC eliminates the expensive, high accuracy current sense resistor, making it ideal for battery charging applications and adaptors with accurate current limit.
The product achieves higher efficiency than traditional constant current switching regulators by eliminating its associated power loss on the sensing resistor. ACT4523A provides an OVP pin for output over-voltage protection. Other protection features include cycle-by-cycle current limit, thermal shutdown, and frequency foldback at short circuit.
ACT4523A is available in a SOP-8EP package and requires very few external components for operation.
|Input Voltage(V)||10 to 40|
|Max Output Current(A)||3.5|
|ActiveCharge™ with Qualcomm QC 2.0||No|
|Sensorless CC Control||Yes|