The HT7463C/D is a current mode buck converter. With a wide input range from 4.5V to 60V, the HT7463C/D is suitable for a wide range of applications such as power conditioning from unregulated sources. Having a low internal switch typical RDSON value of 0.9Ω, the device has a good operating typical efficiency value of 85% and the added advantage of reduced junction temperature. The operating frequency is fixed at 1250/550kHz for the HT7463C/HT7463D respectively. The HT7463C allows the use of small external components while still being able to have low output voltage ripple. A soft-start function can be implemented using the enable pin and by connecting an external RC circuit allowing the user to tailor the soft-start time to a specific application.

* Wide Input Voltage Range 4.5V to 60V

* 60V / 0.9Ω Internal Power MOSFET

* 600mA Peak Output Current

* Up to 90% Efficiency

* 1.25MHz (HT7463C) and 550kHz (HT7463D) Fixed Operating Frequency

* Ultra Low Shutdown Current < 1μA

* Output Short Circuit Protection

* Thermal Shutdown Protection

* Package Type: 6-pin SOT23

Datasheet