MIC2124数据手册集成电路（IC）的PMIC-稳压器-DCDC开关式控制器规格书PDF

描述 Description

The MIC2124 is a member of the Hyper Speed Control™ family of DC-DC controllers. It uses an adaptive on-time current mode control scheme and operates at a constant frequency.

The MIC2124 operates over a supply range of +3V to +18V, and is independent of the IC supply voltage VIN. It operates at a fixed 300kHz switching frequency and can be used to provide up to 25A of output current. The output voltage is adjustable down to +0.8V.

The MIC2124 includes an EN/COMP pin that can be pulled low to shut down the converter. The MIC2124 optimizes performance and ensures stability with external compensation.

The UVLO is provided to ensure proper operation under power-sag conditions and to make sure that the external power MOSFET has enough voltage to work with. An internal digital soft-start ensures reduced inrush current. Cycle-by-cycle current limiting ensures FET protection.

The MIC2124 is available in a 10-pin MSOP package with a junction temperature operating range from -40°C to +125°C.

特性 Features

• +3V to +18V input voltage
• 25A output current capability
• Any Capacitor™ stable
• Zero ESR to high ESR
• Output down to 0.8V with ±1% FB accuracy
• Up to 94% efficiency
• 300kHz switching frequency
• All N-Channel MOSFET design
• Shutdown feature with EN/COMP
• No current-sense resistor needed
• Internal 4ms digital soft-start
• Thermal shutdown
• Pre-bias output safe
• Cycle-by-Cycle foldback current-limit protection
• 10-pin MSOP package
• -40°C to +125°C junction temperature range

简介

MIC2124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MIC2124DC-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。