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相关产品
产品信息
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