SG109中文资料Positive Fixed Linear Voltage Regulators, - Positive 5.0V Fixed, 1A数据手册Microchip规格书

描述 Description

The SG109 is a self-contained 5V regulator designed to provide local regulation at currents up to 1A for digital logic cards. This device is available in the hermetic TO-3 and TO-39 packages. The SG109's design has protective features principally current limiting to control the peak currents and thermal shutdown to protect against excessive power dissipation. These features make the device blowout proof. With the only added component being an optional input bypass capacitor, this regulator becomes extremely easy to apply. Utilizing an improved Bandgap reference design, problems that are normally associated with the Zener diode references, such as, drift in output voltage and large changes in the line and load regulation have been eliminatedMicrochip Ordering Part  Standard Microcircuit Drawing (SMD) SG109T-JANCross Reference M38510/10701BXASG109T-JANCross Reference M38510/10701BXX

特性 Features

Fully Compatible with TTL and DTL
Output Current in Excess of 1A
Internal Thermal Overload Protection
No Additional External Components
Bandgap Reference Voltage
Foldback Current Limiting

简介

SG109属于集成电路（IC）的线性+开关稳压器。由制造生产的SG109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。