SP4533车载充电器IC（异步系列）

SP4533 is a wide input voltage, high efficiency CC step-down DC/DC converter that operates in either CV (Constant Output Voltage) mode or CC(Constant Output Current) mode. SP4533 provides up to 3A output current at 125kHz switching frequency.
Active CC is a patent-pending control scheme to achieve highest accuracy 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 SP4533 achieves higher efficiency than traditional constant current switching regulators by eliminating its associated power loss.
Protection features include cycle-by-cycle current limit, thermal shutdown, and frequency foldback at short circuit. The devices are available in a ESOP-8L package and require very few external devices for operation.

◆ 40V Input Voltage Surge
◆ 38V Steady State Operation
◆ Up to 3A output current
◆ Output Voltage up to 12V
◆ Patent Pending Active CC Sensorless Constant Current Control
◆ Resistor Programmable
◆ ±7.5% CC Accuracy
◆ 2% Feedback Voltage Accuracy
◆ Up to 94% Efficiency
◆ 125kHz Switching Frequency Eases EMI Design
◆ Advanced Feature Set
◆ ESOP-8L Package

◆ Car Charger/ Adaptor
◆ Battery Charger
◆ Rechargeable Portable Devices
◆ USB Power Supplies
◆ General-Purpose CC/CV Supply