onsemi Voltage Regulators - DC DC Switching Regulators FAN53555BUC05X

The FAN53555BUC05X is a step-down switching voltage regulator designed to deliver a digitally programmable output voltage from an input range of 2.5 V to 5.5 V. It supports a continuous output current of 5 A and can handle pulse currents up to 6.5 A. The output voltage can be programmed via an I¬=C interface, with options ranging from 0.6 V to 1.23 V in 10 mV steps, and other configurations available for different voltage ranges. Operating at a fixed frequency of 2.4 MHz, the regulator is optimized for efficiency, maintaining over 80% efficiency even at low load currents of 10 mA. It features a programmable slew rate for voltage transitions, a quiescent current of 60 ¬µA in Power-Save Mode, and includes protections such as input under-voltage lockout, thermal shutdown, and overload protection. The device is packaged in a compact 20-bump wafer-level chip scale package (WLCSP), making it suitable for applications in portable devices like tablets, smartphones, and gaming devices.