LM7808屬于集成電路（IC）的線性+開關穩(wěn)壓器。由安森美半導體公司制造生產的LM7808穩(wěn)壓器 - 線性線性穩(wěn)壓器用于提供穩(wěn)定的輸出電壓，無論負載電流、輸入電壓或環(huán)境因素如何變化，這些輸出電壓通常都要保持不變。它們的工作原理要求輸入電壓維持在高于所需的輸出電壓，而且要超出某個最小量，并且在工作時會將輸入端的任何多余電壓轉換為熱量。對于大多數應用而言，雖然這種穩(wěn)壓器的效率低于開關模式的穩(wěn)壓器，但它們通常更適合對噪聲高度敏感的應用。

特性 Features

? Output Current up to 1 A

? Output Voltages: 5, 6, 8, 9, 10, 12, 15, 18, 24 V

? Thermal Overload Protection

? Short-Circuit Protection

? Output Transistor Safe Operating Area Protection

描述 Description

The LM78XX series of three-terminal positive regulators is available in the TO-220 package and with several fixed output voltages, making them useful in a wide range of applications. Each type employs internal current limiting, thermal shut-down, and safe operating area protection. If adequate heat sinking is provided, they can deliver over 1 A output current. Although designed primarily as fixedvoltage regulators, these devices can be used with external components for adjustable voltages and currents.