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

The MIC2182-3.3BM is a synchronous buck switching regulator controller designed for high efficiency and high output current applications. It operates with an input voltage range of 4.5V to 32V and provides a fixed output voltage of 3.3V with a maximum output current capability of 20A. The device features a PWM and skip-mode control scheme that allows for efficiencies exceeding 95%, making it suitable for battery-powered devices and high-current power distribution systems. The controller includes a shutdown mode that reduces quiescent current to 0.1¬µA, and it can automatically switch between PWM and skip mode to maintain efficiency at varying load conditions. The MIC2182-3.3BM is housed in a 16-pin SOP package and operates over a temperature range of -40¬8C to +85¬8C. It also incorporates features such as cycle-by-cycle current limiting, built-in undervoltage protection, and a precision reference output of 1.245V. This product is ideal for applications including notebook computers, PDAs, and wireless modems.