LM1086中文资料1.5A、29V 线性稳压器数据手册TI规格书

描述 Description

The LM1086 is a regulator with a maximum dropout of 1.5 V at 1.5 A of load current. The device has the same pin-out as TI’s industry standard LM317.

Two resistors are required to set the output voltage of the adjustable output voltage version of the LM1086. Fixed output voltage versions integrate the adjust resistors. Typically, no input capacitor is needed unless the device is situated more than 6 inches from the input filter capacitors. Output capacitor can be replaced with ceramic and appropriate ESR.

The LM1086 circuit includes a zener trimmed bandgap reference, current limiting, and thermal shutdown. Because the LM1086 regulator is floating and detects only the input-to-output differential voltage, supplies of several hundred volts can be regulated as long as the maximum input-to-output differential is not exceeded. Exceeding the maximum input-to-output deferential will result in short-circuiting the output. By connecting a fixed resistor between the adjustment pin and output, the LM1086 can be also used as a precision current regulator.

For applications requiring greater output current, refer to LM1084 (clickable link) for the 5-A version, and the LM1085 (clickable link) for the 3-A version.

特性 Features

• Available in Fixed 1.8-V, 2.5-V, 3.3-V, 5-V
• Available in Adjustable Version
• Current Limiting and Thermal Protection
• 2% Output Accuracy
• Output Current 1.5 A
• Line Regulation 0.015% (Typical)
• Load Regulation 0.1% (Typical)
• Maximum Input Voltage up to 29V
• Minimum Adjustable Output Voltage Down to 1.25V
• Stable with Ceramic Output Capacitor with ESR
• Temperature Range : -40°C to 125°C

简介

LM1086属于集成电路（IC）的线性+开关稳压器。由TI制造生产的LM1086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。