MIC2164-3中文资料PWM Controllers – Buck Products数据手册Microchip规格书

描述 Description

MIC2164/-2/-3/C are constant frequency, synchronous buck controllers featuring adaptive on-time control. The MIC2164/-2/-3/C are the first products in the new Hyper Speed Control™ family of buck controllers.
The MIC2164/-2/-3/C controllers operate over an input supply range of 3V to 28V, and are independent of the IC supply voltage. The devices are capable of supplying 25A output current. While the MIC2164 operates at 300kHz, the MIC2164-2 operates at 600kHz, and the MIC2164-3 operates at 1MHz.
A unique Hyper Speed Control™ architecture allows for ultra-fast transient response while reducing the output capacitance and also makes High VIN/Low VOUT operation possible. The MIC2164/-2/-3/C controllers utilizes an architecture which is adaptive tON ripple controlled. A UVLO feature is provided to ensure proper operation under power-sag conditions to prevent the external power MOSFET from overheating. A soft start feature is provided to reduce the inrush current. Foldback current limit and \"hiccup\" mode short-circuit protection ensure FET and load protection.
The MIC2164/-2/-3/C controllers are available in a 10-pin MSOP (MAX1954A-compatible) package with a junction operating range from -40°C to +125°C.

特性 Features

·Hyper Speed Control™ architecture enables
·High delta V operation (V HSD=28V and V OUT=0.8V)
·Smaller output capacitors than competitors
·3V to 28V input voltage
·Any Capacitor™ stable
·Zero ESR to high ESR
·25A output current capability
·300kHz/600kHz/1MHz switching frequency
·Adaptive on-time mode control
·Adjustable outputfrom 0.8V to 5.5Vwith ±1% (MIC2164/-2/-3) or ±3% (MIC2164C) feedback accuracy
·Up to 95% efficiency
·Foldback current limit and \"hiccup\" mode short-circuit protection
·6ms Internal soft start
·Thermal shutdown
·Safe start-up into pre-biased loads
·-40°C to +125°C junction temperature range
·Available in 10-pin MSOP package

简介

MIC2164-3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MIC2164-3DC-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。