[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-562794-105":59,"doc-detail-562794-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","lm431a-lm431b-lm431c-programmable-shunt-regulator-june-2013","LM431A / LM431B / LM431C - Programmable Shunt Regulator - June 2013","","LM431A, LM431B, and LM431C are three-terminal programmable shunt regulators with thermal stability across the full operating temperature range. Output voltage is set between VREF (about 2.5 V) and 36 V using two external resistors, providing a typical dynamic output impedance of 0.2 Ω. The internal active output circuitry enables sharp turn-on behavior, making these parts effective replacements for Zener diodes. The document specifies packages, pinout, ordering options, absolute maximum ratings, recommended operating conditions, and key electrical characteristics including reference voltage, temperature drift, currents, and dynamic impedance.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":30,"@type":76,"position":81},"https://docshare.wps.com/document/technology/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/lm431a-lm431b-lm431c-programmable-shunt-regulator-june-2013/562794/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/lm431a-lm431b-lm431c-programmable-shunt-regulator-june-2013/562794.png","ImageObject",300,407,{"name":92,"@type":93},"hdkawk","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-13","2026-10-12",true,{"@type":102,"interactionType":103,"userInteractionCount":19},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What adjustable output voltage range do LM431A/LM431B/LM431C support?","Question",{"text":112,"@type":113},"They can be programmed to any value between VREF (approximately 2.5 V) and 36 V using two external resistors.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What are the key absolute maximum ratings for these regulators?",{"text":117,"@type":113},"The document lists cathode voltage up to 37 V, cathode current range from -100 mA to +150 mA, reference input current from -0.05 mA to +10 mA, and specified junction/storage temperature limits.",{"name":119,"@type":110,"acceptedAnswer":120},"How is the output voltage programmed in typical applications?",{"text":121,"@type":113},"The output voltage is determined by two external resistors relative to the reference voltage (VREF) using the three-terminal regulator configuration (Ref, Anode, Cathode).","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},562794,1791843685,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":29,"category_name":30,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":19,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":145},3985747859855,"https://ap-avatar.wpscdn.com/davatar_276721f389ce27ea32af1340a28f341c","| \u003Cbr>\u003Cbr>LM431A / LM431B / LM431C Programmable Shunt Regulator |  | \u003Cbr>June 2013 |\n| --- | --- | --- |\n| Features\u003Cbr>• Programmable Output Voltage to 36 V\u003Cbr>• Low Dynamic Output Impedance: 0.2 Ω (Typical)\u003Cbr>• Sink Current Capability: 1.0 to 100 mA\u003Cbr>• Equivalent Full-Range Temperature Coefficient of\u003Cbr>50 ppm/°C (Typical)\u003Cbr>• Temperature Compensated for Operation Over Full Rated Operating Temperature Range\u003Cbr>• Low Output Noise Voltage\u003Cbr>• Fast Turn-on Response | Description\u003Cbr>The LM431A / LM431B / LM431C are three-terminal output adjustable regulators with thermal stability over the full operating temperature range. The output voltage can be set to any value between V REF (approximately 2.5 V) and 36 V with two external resistors. These devices have a typical dynamic output impedance of 0.2 Ω. Active output circuit provides a sharp turn-on characteristic, making these devices excellent replacements for Zener diodes in many applications.\u003Cbr>TO-92\u003Cbr>1\u003Cbr>1. Ref 2. Anode 3. Cathode\u003Cbr>8-SOIC\u003Cbr>\u003Cbr>\u003Cbr>1\u003Cbr>1.Cathode [2.3.6.7](2.3.6.7).Anode 4.5. NC 8. Ref |  |\n| Ordering Information\u003Cbr>Part Number Operating\u003Cbr>Temperature\u003Cbr>Range Output Voltage Tolerance Top Mark Package Packing Method LM431CCZ -25 ~ +85°C 0.5% LM431CCZ TO-92 Bulk LM431CCMX LM431CCM 8-SOIC Tape and Reel LM431BCZX 1% LM431BCZ TO-92 Tape and Reel LM431BCZXA LM431BCZ TO-92 Ammo LM431BCMX LM431BCM 8-SOIC Tape and Reel LM431ACZ 2% LM431ACZ TO-92 Bulk LM431ACZX LM431ACZ TO-92 Tape and Reel LM431ACMX LM431ACM 8-SOIC Tape and Reel LM431CIMX -40 ~ +85°C 0.5% LM431CIM 8-SOIC Tape and Reel LM431BIZX 1% LM431BIZ TO-92 Tape and Reel LM431AIZ 2% LM431AIZ TO-92 Bulk LM431AIMX LM431AIM 8-SOIC Tape and Reel |  |  |\n\n© 2003 Fairchild Semiconductor Corporation [www.fairchildsemi.com](www.fairchildsemi.com)  \n[LM431A / LM431B / LM431C Rev](LM431A / LM431B / LM431C Rev). 1.2.0 1  \nLM431A / LM431B / LM431C—Programmable Shunt Regulator  \n\n| Block Diagram |  |  |  |\n| --- | --- | --- | --- |\n| REFERENCE | \u003Cbr>\u003Cbr>|  | CATHODE |\n| REFERENCE (R) |  | \u003Cbr>\u003Cbr>CATHODE (K)\u003Cbr>\u003Cbr>\u003Cbr>\u003Cbr>ANODE (A) |  |\n| Figure 1. Block Diagram\u003Cbr>Absolute Maximum Ratings\u003Cbr>Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Values are at TA = 25°C unless otherwise noted.\u003Cbr>Symbol Parameter Value Unit VKA Cathode Voltage 37 V IKA Cathode Current Range (Continuous) -100 ~ +150 mA I REF Reference Input Current Range -0.05 ~ +10 mA PD Power Dissipation\u003Cbr>TO-92, 8-SOIC Packages 770 mW RθjA Thermal Resistance, Junction to Ambient\u003Cbr>TO-92, 8-SOIC Packages 160 °C/W TOPR Operating Temperature Range LM431xC -25 ~ +85 °C Operating Temperature Range LM431xI -40 ~ +85 °C TJ Junction Temperature 150 °C TSTG Storage Temperature Range -65 ~ +150 °C\u003Cbr>Recommended Operating Conditions\u003Cbr>The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not recommend exceeding them or designing to Absolute Maximum Ratings.\u003Cbr>Symbol Parameter Min. Max. Unit VKA Cathode Voltage V Ref 36 V IKA Cathode Current 1.0 100 mA |  |  |  |\n\n© 2003 Fairchild Semiconductor Corporation [www.fairchildsemi.com](www.fairchildsemi.com)  \n[LM431A / LM431B / LM431C Rev](LM431A / LM431B / LM431C Rev). 1.2.0 2  \nLM431A / LM431B / LM431C—Programmable Shunt Regulator  \nElectrical Characteristics  \nValues are at TA = 25°C unless otherwise noted.  \n\n| Symbol | Parameter | Conditions |  | LM431A |  |  | LM431B |  |  | LM431C |  |  | Unit |\n| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |\n|  |  |  |  | Min. | Typ. | Max","cbCaii4OJ77q102l","https://ap.wps.com/l/cbCaii4OJ77q102l","pdf",230690,11,"English","# Features\n# Description\n# Ordering Information\n# Absolute Maximum Ratings\n# Recommended Operating Conditions\n# Electrical Characteristics\n# Test Circuits","[{\"question\":\"What adjustable output voltage range do LM431A/LM431B/LM431C support?\",\"answer\":\"They can be programmed to any value between VREF (approximately 2.5 V) and 36 V using two external resistors.\"},{\"question\":\"What are the key absolute maximum ratings for these regulators?\",\"answer\":\"The document lists cathode voltage up to 37 V, cathode current range from -100 mA to +150 mA, reference input current from -0.05 mA to +10 mA, and specified junction/storage temperature limits.\"},{\"question\":\"How is the output voltage programmed in typical applications?\",\"answer\":\"The output voltage is determined by two external resistors relative to the reference voltage (VREF) using the three-terminal regulator configuration (Ref, Anode, Cathode).\"}]","LM431A / LM431B / LM431C - Programmable Shunt Regulator - June 2013 | PDF",1791809736,28]