型号：LM317T LM317T LM317T LM317T
品牌：NS/国半
描述：Adjustable Voltage Regulator 
类别：集成电路 (IC)
家庭：PMIC - 稳压器 - 线性
系列：-
稳压器拓扑结构：正，可调式
输出电压：1.2 V ~ 37 V
输入电压： 40 V
电压 - 压降（标准）：-
稳压器数量：1
电流 - 输出：500mA
电流 - 限制（）：1.5A
工作温度：0°C ~ 125°C
安装类型：通孔
封装/外壳：TO-220-3
供应商设备封装：TO-220AB
包装：管件
标准包装：50
封装：DIP14

Features

• Output voltage range: 1.2 to 37 V

• Output current in excess of 1.5 A

• 0.1% line and load regulation

• Floating operation for high voltages

• Complete series of protections: current limiting, thermal shutdown and SOA

control

Description

The LM217, LM317 are monolithic integrated circuits in TO-220, TO-220FP and

D2PAK packages intended for use as positive adjustable voltage regulators.

They are designed to supply more than 1.5 A of load current with an output voltage

adjustable over a 1.2 to 37 V range.

The nominal output voltage is selected by means of a resistive divider, making the

device exceptionally easy to use and eliminating the stocking of many fixed

regulators.

The LM217, LM317 provides an internal reference voltage of 1.25 V between the output and adjustments

terminals. This is used to set a constant current flow across an external resistor divider (see Figure 6. Basic

adjustable regulator), giving an output voltage VO of:

VO = VREF (1 + R2/R1) + IADJ R2

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