Microchip Technology, Inc. DC DC Switching Controllers MIC2182-3.3BSM

The MIC2182-3.3BSM is a synchronous buck switching regulator controller designed for high efficiency and high output current applications. It supports an input voltage range of 4.5V to 32V and can deliver up to 20A output current. The device features a PWM and skip-mode control scheme that allows efficiency to exceed 95%, making it suitable for battery-powered devices and high-current distributed power supplies. This regulator operates with a maximum duty cycle of 86% and includes a shutdown mode that reduces quiescent current to 0.1¬µA. It automatically switches between PWM and skip mode to maintain high efficiency at varying load conditions, with a typical quiescent current of 600¬µA in skip mode. The MIC2182-3.3BSM is housed in a 16-pin SSOP package and operates over a temperature range of -40¬8C to +85¬8C. Key features include cycle-by-cycle current limiting, built-in undervoltage protection, and a precision 1.245V reference output with 0.6% total regulation. The device is suitable for applications such as DC power distribution systems, notebook computers, and battery-operated equipment.