{"id":3954,"date":"2026-06-09T01:51:31","date_gmt":"2026-06-09T01:51:31","guid":{"rendered":"https:\/\/materialparts.com\/lm5017mr-nopb\/"},"modified":"2026-06-09T01:51:31","modified_gmt":"2026-06-09T01:51:31","slug":"lm5017mr-nopb","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/lm5017mr-nopb\/","title":{"rendered":"LM5017MR\/NOPB"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The LM5017MR\/NOPB from Texas Instruments is a 100V, 600mA constant on-time synchronous buck\/fly-buck regulator in an 8-pin HSOIC package. With 7.5V to 100V input range and integrated high-side and low-side MOSFETs, it requires minimal external components.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n\n\n
\u0646\u0637\u0627\u0642 \u062c\u0647\u062f \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\n7.5V to 100V<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\n600mA<\/td>\n<\/tr>\n
\u0627\u0644\u0637\u0648\u0628\u0648\u0644\u0648\u062c\u064a\u0627<\/td>\nBuck \/ Fly-Buck<\/td>\n<\/tr>\n
\u062a\u0631\u062f\u062f \u0627\u0644\u062a\u062d\u0648\u064a\u0644<\/td>\nUp to 1MHz<\/td>\n<\/tr>\n
High-Side RDS(on)<\/td>\n1.2 Ohm typical<\/td>\n<\/tr>\n
Low-Side RDS(on)<\/td>\n0.8 Ohm typical<\/td>\n<\/tr>\n
Iq<\/td>\n275uA typical<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nHSOIC-8 (DDA, thermally enhanced)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40 to +125C<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • Integrated 100V N-channel MOSFETs<\/li>\n
  • Constant on-time control, no loop compensation<\/li>\n
  • Fly-Buck isolated output capability<\/li>\n
  • Adjustable output voltage from 2.5V<\/li>\n
  • Built-in thermal shutdown and current limit<\/li>\n
  • Programmable UVLO and soft-start<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Industrial 24V\/48V power supplies<\/li>\n
    • Isolated bias supplies (Fly-Buck)<\/li>\n
    • Telecom and datacom power<\/li>\n
    • LED driver bias supplies<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LM5017MR\/NOPB from Texas Instruments is a 100V, 600mA constant on-time synchronous buck\/fly-buck regulator in an 8-pin HSOIC package. With 7.5V to 100V input range and integrated high-side and low-side MOSFETs, it requires minimal external components. Key Specifications Input Voltage Range 7.5V to 100V Output Current 600mA Topology Buck \/ Fly-Buck Switching Frequency […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[31,13],"tags":[],"chip_brand":[138],"class_list":["post-3954","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"100V, 600mA sync buck\/Fly-Buck regulator, 7.5-100Vin, HSOIC-8","date_code":"","package_case":"HSOIC-8 (4.9 x 3.9 mm, DDA thermally enhanced)","in_stock":3247,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/lm5017.pdf","price":"$1.37 @ 1ku","product_introduction":"The LM5017MR\/NOPB is a 100V, 600mA synchronous step-down regulator with integrated high-side and low-side MOSFETs from Texas Instruments. Using constant on-time (COT) control, it eliminates the need for loop compensation while providing excellent transient response. The wide 7.5V to 100V input range suits industrial 24V\/48V systems and telecom rectified buses. The unique Fly-Buck topology enables isolated output generation without optocouplers. The HSOIC-8 (DDA) package features an exposed thermal pad for efficient heat dissipation.","working_principle":"The LM5017 uses constant on-time control. (1) On-Time: When FB falls below the internal reference (1.225V), the high-side MOSFET turns on for a fixed on-time proportional to VOUT\/VIN. (2) Off-Time: After on-time expires, the high-side turns off and the low-side MOSFET turns on until the next cycle. (3) Fly-Buck Mode: A coupled inductor on the output generates an isolated secondary output without optocoupler feedback. (4) Protection: Cycle-by-cycle current limit, thermal shutdown at 165C, and programmable UVLO with hysteresis protect the device.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>VIN<\/td>Input supply (7.5-100V)<\/td><\/tr>
      2<\/td>SW<\/td>Switch node (inductor connection)<\/td><\/tr>
      3<\/td>VCC<\/td>Internal 7V regulator output (bypass cap)<\/td><\/tr>
      4<\/td>FB<\/td>Output voltage feedback<\/td><\/tr>
      5<\/td>RON<\/td>On-time programming resistor<\/td><\/tr>
      6<\/td>VIN<\/td>Input supply (7.5-100V)<\/td><\/tr>
      7<\/td>RTN<\/td>Power ground<\/td><\/tr>
      8<\/td>EP<\/td>Exposed thermal pad (GND)<\/td><\/tr><\/table>","application_scenarios":"
      • Industrial 24V\/48V buck: Efficiently steps down 24V or 48V bus to 5V\/3.3V for MCU and sensor power in factory automation<\/li>
      • Fly-Buck isolated bias: Generates isolated gate driver bias supplies for IGBT\/SiC drivers without optocouplers<\/li>
      • Telecom power: Converts -48V bus to 12V\/5V intermediate rails in data center and telecom equipment<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>LM5164DDAR<\/td>HSOIC-8<\/td>100V, 300mA, lower current<\/td><\/tr>
        TI<\/td>LM5017MAX\/NOPB<\/td>SOIC-8<\/td>Standard SOIC-8 package<\/td><\/tr>
        TI<\/td>LM5161DDAR<\/td>HSOIC-8<\/td>100V, 1A, higher current<\/td><\/tr>
        Monolithic Power<\/td>MP8759GD<\/td>SOIC-8<\/td>60V, 500mA alternative<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/3954","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=3954"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/3954\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=3954"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=3954"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=3954"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=3954"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}