MCP16363中文资料48V IN, 2.2MHz, PWM Dithering, Buck Regulator数据手册Microchip规格书

描述 Description

The MCP16361/2/3 family of devices are highly integrated, high-efficiency, fixed-frequency, step-down DC-DC converters in a compact 8-lead 3x3 mm VDFN wettable flank package that operates from input voltage sources up to 48V. Integrated features include a high-side switch, fixed-frequency Peak Current Mode Control, Internal Compensation, Power Good, Peak Current Limit and Overtemperature Protection. The MCP16361/2/3 provides all the active functions for local DC-DC conversion, with fast transient response and accurate regulation.High efficiency conversion is achieved by integrating the current-limited, low-resistance, high-speed N-Channel MOSFET and associated drive circuitry. High switching frequency minimizes the size of external filtering components resulting in a small size solution.The MCP16361/2/3 can supply 3A of continuous current while regulating the output voltage from 2.0V to 24V. An integrated, high-performance peak current mode architecture keeps the output voltage tightly regulated, even during input voltage steps and output current transient conditions that are common in power systems.The MCP16363 is designed for EMI constrained applications where reduced peak emissions are required. This is achieved by sweeping the switching frequency over a 10% range above the 2.2 MHz nominal value.Output voltage is set with an external resistor divider. The Power Good output pin will go from logic low to logic high (through an external pull-up resistor) once the output voltage is within 92% of the nominal set point. The EN input is used to turn the device on and off. While off, only a few micro-amps of current are consumed from the input.The MCP16361/2/3 is offered in a space-saving 8-lead 3x3 mm VDFN wettable flanks surface mount package

特性 Features

Input Voltage Range: 4.0V to 48V
Adjustable Output Voltage Range: 2.0V to 24V
Integrated N-Channel Buck Switch: 100 mOhm
3A Output Current
2.2 MHz Switching Frequency
Shutdown Current: 5 µA typical
PWM only Mode of Operation with Switching Frequency Dithering for EMI constrained applications
Power Good Output
Undervoltage Lockout (UVLO)
Peak Current Mode Control
Internal Compensation
Internal Soft-Start
Internal Bootstrap Diode
Cycle-by-Cycle Peak Current Limit
Overtemperature Protection
Package: 8-lead 3x3 mm wettable flanks VDFN

简介

MCP16363属于集成电路（IC）的PMIC-稳压器-DCDC开关式控制器。由制造生产的MCP16363DC-DC 开关控制器PMIC（电源管理集成电路）DC 到 DC 开关式控制器是用于高效率电路的稳压 IC，其配置为生成高于（突升或步升）或低于（突降或步降）输入电源的输出电源电压。其他拓扑结构可能包括：降压-升压、反激、正激、Cuk、SEPIC、全桥、半桥和推挽式。这些器件不同于需要最小电压并“烧尽”多余电压的线性稳压器。