LMR14020参考设计电路|降压调节器应用电路

LMR14020降压调节器是40V2A降压调节器，集成了一个高端MOSFET。此篇主要介绍了LMR14020特性、应用范围、参考设计电路以及电路分析，帮助大家缩短设计时间。

LMR14020特性：4V到40V的输入范围；超低40µA静态工作电流；电流模式控制；支持高占空比工作

LMR14020典型应用范围：汽车用电池调节；工业电源；电信和数据通信系统；电池供电系统

LMR14020参考设计应用电路：

图1LMR14020内部结构图

TheThe LMR14020 SIMPLE SWITCHER® regulator is an easy to use step-down DC-DC converter that operates from 4.0 V to 40 V supply voltage. It integrates a 90 mΩ (typical) high-side MOSFET, and is capable of delivering up to 2 A DC load current with exceptional efficiency and thermal performance in a very small solution size.

图2LMR14020参考设计图

The LMR14020 implements constant frequency peak current mode control with Sleep-mode at light load to achieve high efficiency. The device is internally compensated, which reduces design time, and requires fewer external components. The switching frequency is programmable from 200 kHz to 2.5 MHz by an external resistor RT.

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