{"id":10658,"date":"2026-07-20T09:17:30","date_gmt":"2026-07-20T09:17:30","guid":{"rendered":"https:\/\/ic-vendor.com\/lm22670mrx-adj-nopb\/"},"modified":"2026-07-20T09:17:30","modified_gmt":"2026-07-20T09:17:30","slug":"lm22670mrx-adj-nopb","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/es\/lm22670mrx-adj-nopb\/","title":{"rendered":"LM22670MRX-ADJ\/NOPB"},"content":{"rendered":"

Productos<\/h2>\n

The LM22670MRX-ADJ\/NOPB is a 1A step-down switching regulator from Texas Instruments with an input range of 4.5V to 42V. It features a 500kHz switching frequency, integrated 250m\u03a9 N-channel MOSFET, and current-mode control. The ADJ variant provides adjustable output voltage from 1.285V to 40V. Packaged in an 8-pin HSOP (MRX) with exposed thermal pad for efficient heat dissipation.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n
Funci\u00f3n<\/td>\n1A Step-Down Switching Regulator<\/td>\n<\/tr>\n
Input Voltage<\/td>\n4.5V to 42V<\/td>\n<\/tr>\n
Output Voltage<\/td>\n1.285V to 40V (adjustable)<\/td>\n<\/tr>\n
Corriente de salida<\/td>\n1A<\/td>\n<\/tr>\n
Switching Frequency<\/td>\n500kHz<\/td>\n<\/tr>\n
MOSFET RDS(on)<\/td>\n250m\u03a9 (integrated N-ch)<\/td>\n<\/tr>\n
Control Mode<\/td>\nCurrent-Mode PWM<\/td>\n<\/tr>\n
Paquete<\/td>\n8-pin HSOP with exposed pad (5.0 \u00d7 4.0 mm)<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40\u00b0C to +125\u00b0C (TJ)<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • Wide 4.5V to 42V input voltage range<\/li>\n
  • Integrated 250m\u03a9 N-channel MOSFET for 1A output<\/li>\n
  • 500kHz fixed switching frequency<\/li>\n
  • Current-mode control for improved transient response<\/li>\n
  • Internal soft start and thermal shutdown<\/li>\n
  • Exposed thermal pad for low thermal resistance<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Automotive battery-powered step-down converters<\/li>\n
    • Industrial 24V bus point-of-load conversion<\/li>\n
    • Telecom power supply regulation<\/li>\n
    • Battery charger and power management<\/li>\n
    • Distributed power architectures<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LM22670MRX-ADJ\/NOPB is a 1A step-down switching regulator from Texas Instruments with an input range of 4.5V to 42V. It features a 500kHz switching frequency, integrated 250m\u03a9 N-channel MOSFET, and current-mode control. The ADJ variant provides adjustable output voltage from 1.285V to 40V. Packaged in an 8-pin HSOP (MRX) with exposed thermal pad […]<\/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":[1999],"chip_brand":[138],"class_list":["post-10658","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","tag-lm22670mrx-adj-nopb","chip_brand-ti"],"acf":{"brief_explanation":"1A buck regulator, 4.5-42V in, adj out, 500kHz, integrated FET, HSOP-8","date_code":"","package_case":"HSOP-8 with exposed pad (5.0 \u00d7 4.0 \u00d7 1.6 mm)","in_stock":4890,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/lm22670.pdf","price":"$1.85 @ 1ku","product_introduction":"The LM22670 is a SIMPLE SWITCHER step-down voltage regulator with an integrated 250m\u03a9 N-channel MOSFET, capable of delivering 1A from a wide 4.5V to 42V input. The adjustable version allows output voltage setting from 1.285V to 40V via an external resistor divider. Current-mode control architecture provides excellent line and load transient response with simplified compensation. The 500kHz switching frequency keeps external inductor and capacitor sizes small, and the exposed-pad HSOP package ensures efficient thermal performance. The device includes internal soft start, thermal shutdown, and current limit protection for robust operation in harsh environments.","working_principle":"The LM22670 uses a fixed-frequency current-mode PWM control architecture. The internal oscillator generates a 500kHz clock that sets the switching frequency. On each clock cycle, the integrated N-channel MOSFET turns on and current through the external inductor ramps up. The inductor current is sensed and compared to the error amplifier output; when the current reaches the threshold, the MOSFET turns off and the external Schottky diode conducts during the off-time. The error amplifier compares the FB pin voltage (from the output resistor divider) with the 1.285V internal reference and adjusts the current threshold to regulate the output voltage. The current-mode architecture inherently provides cycle-by-cycle current limiting and simplifies loop compensation compared to voltage-mode control.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>VIN<\/td>Power<\/td>Input supply voltage (4.5-42V)<\/td><\/tr>
      2<\/td>SW<\/td>Output<\/td>Switch node \u2014 connect to inductor and diode<\/td><\/tr>
      3<\/td>BOOT<\/td>I\/O<\/td>Bootstrap capacitor \u2014 connect to SW through cap<\/td><\/tr>
      4<\/td>NC<\/td>\u2014<\/td>No connect<\/td><\/tr>
      5<\/td>FB<\/td>Input<\/td>Feedback \u2014 connect resistor divider from output<\/td><\/tr>
      6<\/td>EN<\/td>Input<\/td>Enable \u2014 high enables operation<\/td><\/tr>
      7<\/td>COMP<\/td>Output<\/td>Compensation \u2014 connect RC network to GND<\/td><\/tr>
      8<\/td>GND<\/td>Power<\/td>Ground and thermal pad<\/td><\/tr><\/table>","application_scenarios":"
      • 12V\/24V automotive battery to 5V\/3.3V step-down conversion<\/li>
      • Industrial 24V bus to 12V intermediate rail<\/li>
      • Telecom -48V (via pre-regulator) to logic supply<\/li>
      • 42V industrial supply to sensor and controller rails<\/li>
      • Battery-powered equipment high-voltage step-down<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>LM22671MRX-ADJ\/NOPB<\/td>HSOP-8<\/td>500mA version, same family<\/td><\/tr>
        TI<\/td>LMR14050<\/td>VQFN-16<\/td>5A, 40V input buck<\/td><\/tr>
        Monolithic Power<\/td>MP8759<\/td>QFN-16<\/td>5A buck, 36V input<\/td><\/tr>
        Richtek<\/td>RT6200<\/td>SOT-23-6<\/td>1A buck, 36V input<\/td><\/tr>
        Infineon<\/td>TLE6389<\/td>PG-DSO-8<\/td>Automotive buck, 40V<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/posts\/10658","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/comments?post=10658"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/posts\/10658\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/media?parent=10658"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/categories?post=10658"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/tags?post=10658"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/chip_brand?post=10658"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}