MCP16311

The MCP16311 is a high-efficiency, synchronous buck converter designed by Microchip Technology for applications requiring compact, reliable power management. It operates with an input voltage range of 2.5 V to 5.5 V, making it suitable for battery-powered and low-voltage systems. The device delivers up to 1.5 A of continuous output current and features integrated high-side and low-side MOSFETs, which reduce external component count and board space while improving efficiency. This converter employs a fixed-frequency PWM control architecture with a typical switching frequency of 1.2 MHz, allowing the use of small inductors and ceramic capacitors for compact designs. Its advanced control loop ensures fast transient response and stable operation under varying load conditions. The MCP16311 also includes built-in protection features such as over-current protection (OCP), over-temperature shutdown (OTSD), and undervoltage lockout (UVLO), enhancing system reliability and safety. Designed for ease of use, the MCP16311 supports adjustable output voltage via an external resistor divider, enabling flexibility across different application needs. It offers a low quiescent current of just 80 µA in normal operation and drops to less than 1 µA in shutdown mode, making it ideal for energy-sensitive devices like portable electronics, IoT sensors, and wearable technology. The device also provides programmable soft-start to limit inrush current during startup, reducing stress on the power supply and connected components. Applications include consumer electronics, industrial sensors, medical devices, and automotive accessories where space, efficiency, and thermal performance are critical. Its small 8-pin DFN package (2 mm × 2 mm) facilitates high-density PCB layouts, while the internal compensation network simplifies design without requiring external feedback components. Additionally, the MCP16311 supports both forced PWM and PFM modes, optimizing efficiency across light and heavy loads—ensuring minimal power loss even at low output currents. With its robust feature set, including high integration, excellent thermal performance, and flexible configuration options, the MCP16311 is well-suited for modern power solutions demanding high efficiency, small form factor, and long battery life.