L78M05A中文资料0.5 A precision positive voltage regulators数据手册ST规格书

描述 Description

The L78M series of three-terminal positive regulators is available in TO-220, TO-220FP,DPAK and IPAK packages and with several fixed output voltages, making it useful in awide range of applications. These regulators can provide local on-card regulation,eliminating the distribution problems associated with single point regulation. Each typeemploys internal current limiting, thermal shutdown and safe area protection, resultingit essentially indestructible. If adequate heat sinking is provided, they can deliverover 0.5 A output current. Although designed primarily as fixed voltage regulators,these devices can be used with external components to obtain adjustable voltage andcurrents.

特性 Features

• Output current to 0.5 A
• Output voltages of 5; 6; 8; 9; 10; 12; 15; 24 V
• Thermal overload protection
• Short circuit protection
• Output transition SOA protection
• Output voltage tolerance: 2 % (AB and AC versions) or 4 % (C version)
• Guaranteed in extended temperature range

简介

L78M05A属于集成电路（IC）的线性+开关稳压器。由制造生产的L78M05A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。