MC7809A数据手册集成电路（IC）的线性+开关稳压器规格书PDF

描述 Description

These linear voltage regulators are monolithic integrated circuits designed as fixed-voltage regulators for a wide variety of applications including local, on-card regulation. These regulators employ internal current limiting, thermal shutdown, and safe-area compensation. With adequate heatsinking they can deliver output currents in excess of 1.0 A. Although designed primarily as a fixed voltage regulator, these devices can be used with external components to obtain adjustable voltages and currents.

特性 Features

Output Current in Excess of 1.0 A
No External Components Required
Internal Thermal Overload Protection
Internal Short Circuit Current Limiting
Output Transistor Safe-Area Compensation
Output Voltage Offered in 1.5%, 2% and 4% Tolerance
Pb-Free Packages are Available

应用 Application

Available in Surface Mount D 2 PAK and Standard 3-Lead Transistor Packages

简介

MC7809A属于集成电路（IC）的线性+开关稳压器。由制造生产的MC7809A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。