L4925中文资料超低压降稳压器数据手册ST规格书

描述 Description

The L4925 is a monolithic integrated 5V voltage regulator with a very low dropout output and additional functions such as power-on reset and programmable reset delay time.

It is designed for supplying microcomputer controlled systems especially in automotive applications.

特性 Features

• Reset circuit sensing the output voltage
• Very low dropout voltage less than 0.6V
• Thermal shutdown and short circuit protections
• Operating DC supply voltage range 6V to 28V
• Extremely low quiescent current
• Transient supply voltage up to 40V
• Output current capability up to 500mA
• Programmable reset pulse delay with external capacitor
• High precision output voltage

简介

L4925属于集成电路（IC）的线性+开关稳压器。由制造生产的L4925稳压器 - 线性线性稳压器用于提供稳定的输出电压，无论负载电流、输入电压或环境因素如何变化，这些输出电压通常都要保持不变。它们的工作原理要求输入电压维持在高于所需的输出电压，而且要超出某个最小量，并且在工作时会将输入端的任何多余电压转换为热量。对于大多数应用而言，虽然这种稳压器的效率低于开关模式的稳压器，但它们通常更适合对噪声高度敏感的应用。