Onsemi, alldatasheet, datasheet, datasheet search site for. The nominal output voltage is selected by means of a resistive divider. It is exceptionally easy to use and requires only two external resistors to set the output voltage. Lm317 datasheet, lm317 datasheets, lm317 pdf, lm317 circuit. Lm317 lm338 lm350 voltage regulator calculator and. They are exceptionally easy to use and require only two external resistors to set the output voltage. Pak packages intended for use as positive adjustable voltage regulators. It requires two external resistors to adjust the output voltage. The simulation compares two lm317 voltage regulators. Digikey s tools are uniquely paired with access to the worlds largest selection of electronic components to help you meet your design challenges headon. It requires only two external resistors to set the output voltage. This device can also be used to make a programmable output regulator, or by connecting a fixed resistor between the adjustment and output, the lm317 can be used as a precision current regulator. It can also provide float operation for high voltage application. Lm117, lm317n wide temperature threepin adjustable regulator 1 features 3 description the lm117 and lm317n series of adjustable 3pin 1 typ.
Lm317lz datasheet, lm317lz pdf, lm317lz data sheet, lm317lz manual, lm317lz pdf, lm317lz, datenblatt, electronics lm317lz, alldatasheet, free, datasheet, datasheets. Semiconductor components industries, llc, 2006 august, 2006. Lm317t datasheet pdf positive voltage regulator motorola, lm317 datasheet, lm317t pdf, lm317t pinout, equivalent, lm317t data, lm317t circuit. As said earlier the ic has 3 pins, in which the input voltage is supplied to pin3 vin. Com datasheet search site for electronic components and semiconductors and other semiconductors. Lm117, lm317n wide temperature threepin adjustable. Adjustable voltage regulator, lm317t pdf download inchange semiconductor, lm317t datasheet pdf, pinouts, data sheet, equivalent, schematic, cross. Lm317 is a 3terminal regulator ic and it is very simple to use. The lm317 serves a wide variety of applications including local, on card regulation. Voltage regulator semiconductor and integrated circuit. A few useful application circuits using ic lm317, collected from national semiconductors pdf datasheet are meticulously explained in this section with the help of the relevant circuit diagrams. Ics included on the chip are current limit thermal overload. Lm317t fairchild semiconductor, lm317t datasheet page 2.
See general marking information in the device marking section on page 10 of this data sheet. Integrated circuit positive adjustable voltage regulator 5v to 37v 25ma. The lm317 ic helps in current limiting, thermal overload protection and safe operating area protection. The lm317 datasheet specifies that is an adjustable threeterminal positivevoltage regulator capable of supplying more than 1. Compare pricing for stmicroelectronics lm317t across 45 distributors and discover alternative parts, cad models, technical specifications, datasheets, and more on octopart. The nominal output voltage is selected by means of a resistive divider, making the. Lm317t stmicroelectronics datasheet and cad model download.
The lm317 is a popular adjustable positive linear voltage regulator. Lm317 linear integrated circuit 4 application circuit 1 3 2 vo r1 r2 vi c1 0. Its having a typical line and load regulation of 0. Lm117, lm317n wide temperature threepin adjustable regulator. Normally, no capacitors are needed unless the device is situated more than 6 inches from the input filter capacitors in. Lm317 3terminal adjustable regulator datasheet rev. This monolithic integrated circuit is an adjustable 3terminal positive voltage regulator designed to supply more than 1. Lm317ln wide vin 100ma adjustable voltage regulator. This reference voltage is converted to aprogramming current iprog by r1 see figure 17, and this datasheet search, datasheets, datasheet search site for electronic components and semiconductors, integrated circuits, diodes and other semiconductors. Nsc 3terminal adjustable regulator,alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. The configurations can be introduced for different applications for upgrading an existing unit with features that would virtually make it indestructible. The lm317 is an adjustable threeterminal positivevoltage regulator capable of. The lm317 lm338 lm350 family of adjustable 3terminal positive voltage regulators can take a input of 3 to 40 volts dc and provide a regulated voltage over a 1. The output voltage vout is dependent on external resistor values r1 and r2, according to the following equation.
It was designed by robert c dobkin in 1976 while he worked at national semiconductor the lm337 is the negative complement to the lm317, which regulates voltages below a reference. If we disconnect the adjustable terminal still lm317 will helpful in overload protection. It has many application circuits in its datasheet, but this ic is known for being used as a variable voltage regulator. You probably know that lm317 ic is used as an adjustable voltage regulator, but did you know it.
Included on the chip are current limit, thermal overload protection and safe area protection. The ic lm317 promises countless interesting and useful power enhancement circuits, applicable in numerous fields where well dimensioned power supplies become crucially important. Device information1 part number package body size nom lm317ln to92 3 4. The lm217, lm317 are monolithic integrated circuits in to220, to220fp and d. Lm317t stmicroelectronics linear voltage regulators 1. This voltage regulator is exceptionally easy to use and requires only two external resistors to set the output voltage. Vo 40 vdc power dissipation package limitation note 1. It was designed by robert bob pease, who also worked for national semiconductor. Adjustable voltage regulator, lm317k pdf download inchange semiconductor, lm317k datasheet pdf, pinouts, data sheet, equivalent, schematic, cross. Some assorted useful lm317 application circuits from national semiconductor pdf datasheet has been discretely explained in this chapter through the relevant circuit illustrations. It employs internal current limiting, thermal shutdown. View lm217, lm317 datasheet from stmicroelectronics at digikey. Stmicroelectronics, alldatasheet, datasheet, datasheet search site for electronic. The first one is cls lm317 with the default parameters, the second is a lm317 with optimized parameters picked from a real circuit and from tis data sheet the data sheet has min, typical and max values, thats not always easy to decide.
Lm317d lm317, ncv317 voltage regulator adjustable output, positive 1. Lm317 datasheet, pdf old version datasheet electronic manufacturer. The lm317 device is an adjustable threeterminal positivevoltage regulator capable of supplying more than 1. Lm317 is an adjustable voltage regulator which takes an input voltage of 3 40v dc and provides a fixed output voltage of 1. All overload protection circuitry remains fully functional even if the adjustment terminal is disconnected. The h metal can, j ceramic, and k metal can packages from analog devices are now obsolete the lt117a series are 3terminal positive adjustable voltage regulators which offer improved performance over earlier devices. Lm317tg pdf datasheet,adjustable output, positive voltage. Lm117 lm317alm317 3terminal adjustable regulator general description the lm117 series of adjustable 3terminal positive voltage regulators is capable of supplying in excess of 1. Lm317t pin configuration transistor lm317t ic lm317 lm317 lm 317 pcb layout for lm317 adjustable lm317bt diodes in4001 symbol lm317t text.
Lm317tg datasheet pdf download,lm317tg pdf,lm,lm3,lm317tg. The device features a typical line regulation of 0. The lm317 device is an adjustable threeterminal positivevoltage regulator. Pricing and availability on millions of electronic components from digikey.
Lm317t on semiconductor datasheet and cad model download. Ic lm317 datasheet, cross reference, circuit and application notes in pdf format. Reviews 0 the lm317 is an adjustable threeterminal positivevoltage regulator capable of supplying more than 1. Lm317t datasheet positive voltage regulator motorola. So, lets look into how to use this ic as a variable voltage regulator. Where greater output current is required, the lm350 series regulators are.