SC4625

1.7MHz High Efficiency Monolithic 0.5A Synchronous Buck Converter POWER MANAGEMENT Description SC4625 is a BiCMOS integrated FET, synchronous, 0.5A step-down regulator. It operates at the typical switching frequency of 1.7MHz and enables the user to choose a very small and inexpensive external output inductor and capacitor. www.DataSheet4U.com SC4625 Features Fully integrated MOSFET switches and compensation 1.7MHz fixed frequency operation Input voltage range: 2.5V to 5.5V Adjustable output voltage from 0.5V to VIN Pulse-skipping mode operation at light load 100% duty cycle in low-dropout mode Over-temperature shutdown MLP-10 lead free package. This product is fully WEEE and RoHS compliant ‹ -40°C to +125°C junction temperature range ‹ ‹ ‹ ‹ ‹ ‹ Fully internally compensated current-mode control loop ‹ provides a fast transient response and ensures excellent line and load regulation. The SC4625 operates from 2.5V ‹ to 5.5V, features internal P-MOS and N-MOS power switches and is implemented as a current-mode pulse-widthmodulated (PWM) control scheme. Multiple modes of operation are available to achieve high performance and efficiency and makes the SC4625 ideally suited for electronic devices where size is at premium. These modes are: PWM fixed frequency, synchronous and asynchronous load dependent, pulse-skipping at very light load, and low-dropout 100% duty cycle mode, by continuously turning on the upper P-MOSFET. Applications ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ WLAN and Bluetooth® applica...