HT7463B Datasheet | Holtek Semiconductor

HT7463A/HT7463B 52V/600m A, 1.25MHz/550k Hz Asynchronous Step Down Converter Features - Wide Input Voltage Range 4.5V to 52V - 52V / 0.9Ω Internal Power MOSFET - 600m A Peak Output Current - Up to 90% Efficiency - 1.25MHz (HT7463A) and 550k Hz (HT7463B) Fixed Operating Frequency - Ultra Low Shutdown Current < 1µA - Output Short Circuit Protection - Thermal Shutdown Protection - Package Type: SOT23-6 Applications - Power Meters - Distribution Power Systems - Battery Chargers - Pre-Regulator for Linear Regulators General Description The HT7463A/B is a current mode buck converter. With a wide input range from 4.5V to 52V, the HT7463A/B 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...