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Current-limit behavior stays constant with temperature, ripple rejection reaches 80 dB, and outputs are protected against short 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output current and voltage range do the LM117 and LM317-N regulators support?","Question",{"text":61,"@type":62},"They supply in excess of 1.5 A and support an adjustable output range of 1.25 V to 37 V.","Answer",{"name":64,"@type":59,"acceptedAnswer":65},"How is the output voltage set?",{"text":66,"@type":62},"The output voltage is set using two external resistors.",{"name":68,"@type":59,"acceptedAnswer":69},"What protection features are included?",{"text":70,"@type":62},"They include current limit, thermal overload protection, and safe area protection, and the overload circuitry remains functional even if the adjustment terminal is 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LM317  \n• Typ. 0. 1% load regulation  \n• Typ. 0.01%/V line regulation  \n• 1.5-A output current  \n• Adjustable output down to 1.25 V  \n• Current limit constant with temperature  \n• 80-dB ripple rejection  \n• Short-circuit protected output  \n• −55°C to 150°C operating temperature range  \n(LM117)  \n2 Applications  \n• Multifunction printers  \n• AC drive power stage modules  \n• Electricity meters  \n• Servo drive control modules  \n• Merchant network and server PSU  \nTypical Application  \nLM317-N  \n*Needed if device is more than 6 inches from filter capacitors.  \n†Optional—improves transient response †† VOUT = 1.25 V èçæ 1 + R2 öR1 ø÷ + IADJ (R2 )  \n3 Description  \nThe LM117 and LM317-N series of adjustable 3-pin positive voltage regulators are capable of supplying in excess of 1.5 A over a 1.25-V to 37-V output range and a wide temperature range. They are exceptionally easy to use and require only two external resistors to set the output voltage. Further, both line and load regulation are better than standard fixed regulators.  \nThe LM117 and LM317-N offer full overload protection such as current limit, thermal overload protection and safe area protection. All overload protection circuitry remains fully functional even if the adjustment terminal is disconnected.  \nTypically, no capacitors are needed unless the device is situated more than 6 inches from the input filter capacitors, in which case an input bypass is needed. An optional output capacitor can be added to improve transient response. The adjustment terminal can be bypassed to achieve very high ripple rejection ratios that are difficult to achieve with standard 3-terminal regulators.  \nBecause the 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. That is, avoid short-circuiting the output. By connecting a fixed resistor between the adjustment pin and output, the LM117 and LM317-N can be also used as a precision current regulator. Supplies with electronic shutdown can be achieved by clamping the adjustment terminal to ground, which programs the output to 1.25 V where most loads draw little current.  \nFor applications requiring greater output current, seethe LM150 series (3 A) and LM138 series (5 A) data sheets. For the negative complement, see the LM137 series data sheet.  \nDevice Information(1)  \n\n| PART NUMBER | PACKAGE | BODY SIZE (NOM) |\n| --- | --- | --- |\n| LM117 | TO-3 (2) | 38.94 mm x 25.40 mm |\n|  | TO (3) | 8.255 mm × 8.255 mm |\n| LM317-N | TO-3 (2) | 38.94 mm x 25.40 mm |\n|  | TO-220 (3) | 14.986 mm × 10.16 mm |\n|  | TO-263 (3) | 10.18 mm × 8.41 mm |\n|  | SOT-223 (4) | 6.50 mm × 3.50 mm |\n|  | TO (3) | 8.255 mm × 8.255 mm |\n|  | TO-252 (3) | 6.58 mm × 6.10 mm |\n\n(1) For all available packages, see the orderable addendum atthe end of the data sheet.  \nAn IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA.  \nLM117, LM317-N  \nSNVS774Q –MAY 2004–REVISED JUNE 2020  \n[www.ti.com](www.ti.com)  \n\n| Table of Contents |  |  |\n| --- | --- | --- |\n| 1 Features .................................................................. 1\u003Cbr>2 Applications ........................................................... 1\u003Cbr>3 Description ............................................................. 1\u003Cbr>4 Revision History..................................................... 2\u003Cbr>5 Device Comparison Table ..................................... 3\u003Cbr>6 Pin Configuration and Functions ......................... 4\u003Cbr>7 Specifications......................................................... 6\u003Cbr>7.1 Absolute Maximum Ratings ...................................... 6\u003Cbr>7.2 ESD Ratin","cbCainkeeqjf4elL","https://ap.wps.com/l/cbCainkeeqjf4elL","pdf",5191349,59,"English","# Features\n# Applications\n# Description\n# Revision History\n# Device Comparison Table\n# Pin Configuration and Functions\n# Specifications\n## Absolute Maximum Ratings\n## ESD Ratings\n## Recommended Operating Conditions\n## Thermal Information, LM117\n## Thermal Information, LM317-N\n## LM117 Electrical Characteristics\n## LM317-N Electrical Characteristics\n## Typical Characteristics\n# Detailed Description\n## Overview\n## Functional Block Diagram\n## Feature Description\n## Device Functional Modes\n# Application and Implementation\n## Application Information\n## Typical Applications\n# Power Supply Recommendations\n# Layout\n## Layout Guidelines\n## Layout Examples\n# Device and Documentation Support\n## Documentation Support\n## Related Links\n## Receiving Notification of Documentation Updates\n## Support Resources\n## Trademarks\n## Electrostatic Discharge Caution\n## Glossary","[{\"question\":\"What output current and voltage range do the LM117 and LM317-N regulators support?\",\"answer\":\"They supply in excess of 1.5 A and support an adjustable output range of 1.25 V to 37 V.\"},{\"question\":\"How is the output voltage set?\",\"answer\":\"The output voltage is set using two external resistors.\"},{\"question\":\"What protection features are included?\",\"answer\":\"They include current limit, thermal overload protection, and safe area protection, and the overload circuitry remains functional even if the adjustment terminal is disconnected.\"}]","LM117, LM317-N Wide Temperature Three-Pin Adjustable Regulator | PDF",149]