The KF8439 is a synchronous step down regu-lator from a high voltage input supply. Operating with an input voltage range from 8V to 35V, the KF8439 achieves 2 8A continuous output cur-rent with excellent load and line regulation. The switching frequency is programmable from 130kHz to 500 kHz and the synchronous architec-ture provides for highly efficient designs. Current mode operation provides fast transient response and eases loop stabilization.
The KF8439 requires a minimum number 0f readily available standard external components. Other features include cable compensation, pro-grammable current limit and thermal shutdown.
The KF8439 converters are available in the industry standard SOP-8L packages.
Features
Wide Input Voltage Range: 8V to 35V
Up to 93% Efficiency
Programmable Switching Frequency up to up to 500kHz
No Loop Compensation Required
Programmable current limit
Thermal Shutdown
Available in SOP-8L Package
Application
Car Charger / Adaptor
Pre-Regulator for Linear Regulators
Distributed Power Systems
Battery Charger