L7908C中文资料1.5A negative voltage regulators数据手册ST规格书

描述 Description

The L79 series of three-terminal negative regulators is available in TO-220, TO-220FP and D²PAK packages and several fixed output voltages, making it useful in a wide range of applications.
These regulators can provide local on-card regulation, eliminating the distribution problems associated with single point regulation; furthermore, having the same voltage option as the L78 positive standard series, they are particularly suited for split power supplies. If adequate heat sinking is provided, they can deliver over 1.5 A output current.
Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltages and currents.

特性 Features

• Output current up to 1.5 A
• Output voltages: -5, -8, -12, and -5 V
• Thermal overload protection
• Short-circuit protection
• Output SOA protection
• Output tolerance 2% (AC version) or 4% (C version) at 25 °C

简介

L7908C属于集成电路（IC）的线性+开关稳压器。由ST制造生产的L7908C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。