应用与设计

ADI汽车传感器和传感器接口解决方案

为了符合新出台的法规要求,提高燃油经济性和减少排放,汽车必须更加环保。只有通过改进传统内燃机效率,才能满足这些要求,这一目标要通过改进燃烧传感和控制性能付诸实现,因而需要更高的传感器和信号调理精度和集成度……
详情介绍

概览

产品详情

High Efficiency Quad Step-Down Converter

LTC3544 是一款采用恒定频率、电流模式架构的四通道、高效率、单片式同步降压型稳压器。4 个稳压器利用单独的运行引脚独立运作。2.25V 至 5.5V 的输入电压范围使得LTC3544 非常适合于单节锂离子/锂聚合物电池供电型应用。100% 占空比实现了低压差操作,从而延长了便携式系统中的电池运行时间。低纹波突发模式操作提高了轻负载效率,从而进一步延长了电池的使用寿命 (纹波通常仅为20mV)。


Efficiency vs Load Current, 300mA  Channel, All Other Channels Off

工具及仿真模型

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

LTspice