{"id":9012,"date":"2026-07-02T02:51:03","date_gmt":"2026-07-02T02:51:03","guid":{"rendered":"https:\/\/materialparts.com\/lm5017sdx-nopb\/"},"modified":"2026-07-03T08:02:50","modified_gmt":"2026-07-03T08:02:50","slug":"lm5017sdx-nopb","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/lm5017sdx-nopb\/","title":{"rendered":"LM5017SDX\/NOPB"},"content":{"rendered":"

Productos<\/h2>\n

The LM5017SDX\/NOPB is a Texas Instruments 100V, 600mA constant on-time synchronous buck regulator with integrated high-side and low-side MOSFETs, 7.5V-100V input, no loop compensation required, and adjustable switching frequency up to 1MHz. Packaged in WSON-8 (4x4mm), -40C to +125C.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n
Input Voltage<\/td>\n7.5 V to 100 V<\/td>\n<\/tr>\n
Corriente de salida<\/td>\n600 mA<\/td>\n<\/tr>\n
Output Voltage<\/td>\n1.225 V to 90 V (adjustable)<\/td>\n<\/tr>\n
Switching Frequency<\/td>\nAdjustable to 1 MHz<\/td>\n<\/tr>\n
Reference Voltage<\/td>\n1.225 V (2% accuracy)<\/td>\n<\/tr>\n
Control Method<\/td>\nConstant On-Time (COT)<\/td>\n<\/tr>\n
Internal Switches<\/td>\n100V high-side + low-side<\/td>\n<\/tr>\n
Paquete<\/td>\nWSON-8 (4 x 4 mm)<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • 7.5V to 100V wide input range<\/li>\n
  • Integrated 100V high-side and low-side MOSFETs<\/li>\n
  • No Schottky diode required<\/li>\n
  • Constant on-time control, no loop compensation<\/li>\n
  • Ultra-fast transient response<\/li>\n
  • Nearly constant operating frequency<\/li>\n
  • Intelligent peak current limit<\/li>\n
  • Adjustable UVLO with hysteresis<\/li>\n
  • Remote shutdown<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Industrial and telecom distributed power<\/li>\n
    • Automotive 12V\/24V\/48V step-down<\/li>\n
    • Isolated fly-buck auxiliary supply<\/li>\n
    • Battery-powered high-voltage systems<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LM5017SDX\/NOPB is a Texas Instruments 100V, 600mA constant on-time synchronous buck regulator with integrated high-side and low-side MOSFETs, 7.5V-100V input, no loop compensation required, and adjustable switching frequency up to 1MHz. Packaged in WSON-8 (4x4mm), -40C to +125C. Key Specifications Input Voltage 7.5 V to 100 V Output Current 600 mA Output […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[31,13],"tags":[641],"chip_brand":[138],"class_list":["post-9012","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","tag-lm5017sdx-nopb","chip_brand-ti"],"acf":{"brief_explanation":"100V, 600mA sync buck, COT, WSON-8, no compensation","date_code":"","package_case":"8-Pin WSON (4.0 x 4.0 x 0.8 mm)","in_stock":14417,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/lm5017.pdf","price":"$1.80 @ 1ku","product_introduction":"The LM5017SDX\/NOPB is a Texas Instruments 100V, 600mA synchronous step-down regulator in a WSON-8 (4x4mm) package with exposed thermal pad. The device integrates both the 100V N-channel high-side buck switch and the low-side synchronous rectifier MOSFET, eliminating the need for an external Schottky diode. The constant on-time (COT) control scheme requires no loop compensation components, provides excellent transient response, and enables very high step-down ratios. The on-time varies inversely with input voltage, resulting in nearly constant switching frequency across the input range. A high-voltage startup regulator provides bias power for internal operation and gate drivers. The intelligent peak current limit protects against overload conditions, with the off-time automatically adjusted based on the FB voltage and input voltage. The adjustable UVLO allows the input undervoltage threshold and hysteresis to be independently programmed. The device also supports Fly-Buck (isolated buck) topologies for generating isolated auxiliary outputs.","working_principle":"The LM5017 uses a constant on-time (COT) control scheme. The on-time is set by an external RON resistor and is inversely proportional to VIN, yielding nearly constant switching frequency. When the FB pin voltage falls below the 1.225V internal reference, the high-side MOSFET turns on for the programmed on-time, ramping up the inductor current. After the on-time, the high-side MOSFET turns off and the low-side synchronous rectifier turns on, ramping down the inductor current. The low-side MOSFET remains on until the FB voltage again falls below 1.225V (in continuous conduction) or the inductor current reaches zero (in discontinuous conduction). The intelligent current limit terminates the on-time if the peak inductor current exceeds 1.02A, and the off-time is extended based on the FB voltage to limit average output current safely during overload and short-circuit conditions.","pin_description":"
      Pin<\/th>Mnemonic<\/th>Description<\/th><\/tr>
      1<\/td>VIN<\/td>Input supply (7.5-100V)<\/td><\/tr>
      2<\/td>UVLO<\/td>Undervoltage lockout programming<\/td><\/tr>
      3<\/td>RON<\/td>On-time programming resistor<\/td><\/tr>
      4<\/td>FB<\/td>Feedback voltage (1.225V ref)<\/td><\/tr>
      5<\/td>VCC<\/td>Internal 7V regulator output<\/td><\/tr>
      6<\/td>BST<\/td>Bootstrap capacitor<\/td><\/tr>
      7<\/td>SW<\/td>Switch node<\/td><\/tr>
      8<\/td>GND<\/td>Ground (connected to exposed pad)<\/td><\/tr><\/table>","application_scenarios":"
      • 48V telecom to 5V\/600mA POL converter with COT control requiring no compensation components<\/li>
      • Industrial 24V to 3.3V supply with UVLO set at 18V for brownout protection<\/li>
      • Fly-Buck isolated auxiliary supply generating 12V\/100mA from 48V input<\/li>
      • Automotive 12V battery to 5V ECU supply with 100V transient withstand<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        LM5017SD\/NOPB<\/td>TI<\/td>SO PowerPAD-8 package<\/td><\/tr>
        LM5160ADNTJR<\/td>TI<\/td>100V, 1A, PSR fly-buck<\/td><\/tr>
        LM5117MH\/NOPB<\/td>TI<\/td>100V, external FET controller<\/td><\/tr>
        LMR16006PDDAR<\/td>TI<\/td>60V, 600mA, SOT-23-6<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/9012","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/comments?post=9012"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/9012\/revisions"}],"predecessor-version":[{"id":9039,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/9012\/revisions\/9039"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=9012"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=9012"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=9012"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=9012"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}