{"id":5474,"date":"2026-06-10T02:35:28","date_gmt":"2026-06-10T02:35:28","guid":{"rendered":"https:\/\/materialparts.com\/tps5420ddar\/"},"modified":"2026-06-10T02:35:28","modified_gmt":"2026-06-10T02:35:28","slug":"tps5420ddar","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/tps5420ddar\/","title":{"rendered":"TPS5420DDAR"},"content":{"rendered":"

Productos<\/h2>\n

The TPS5420DDAR from Texas Instruments is a 2A, 500kHz step-down converter with 5.5-36V input range in an 8-pin SOIC package. With integrated 110mOhm N-channel MOSFET, internal compensation, adjustable output down to 1.22V, and up to 95% efficiency, it provides a simple and compact buck regulator solution.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Topology<\/td>\nStep-down (Buck) converter<\/td>\n<\/tr>\n
Input Voltage Range<\/td>\n5.5V to 36V<\/td>\n<\/tr>\n
Corriente de salida<\/td>\n2A continuous, 3A peak<\/td>\n<\/tr>\n
Output Voltage<\/td>\nAdjustable 1.22V to 31V<\/td>\n<\/tr>\n
Switching Frequency<\/td>\n500 kHz (fixed)<\/td>\n<\/tr>\n
Integrated MOSFET Rds(on)<\/td>\n110 mOhm<\/td>\n<\/tr>\n
Efficiency<\/td>\nUp to 95%<\/td>\n<\/tr>\n
Reference Voltage<\/td>\n1.22V, +\/-1.5% initial accuracy<\/td>\n<\/tr>\n
Corriente de reposo<\/td>\n3 mA typical (operating)<\/td>\n<\/tr>\n
Shutdown Current<\/td>\n18 uA typical (ENA low)<\/td>\n<\/tr>\n
Control Mode<\/td>\nVoltage mode with input feed-forward<\/td>\n<\/tr>\n
Internal Compensation<\/td>\nYes (minimizes external components)<\/td>\n<\/tr>\n
Max Duty Cycle<\/td>\n87%<\/td>\n<\/tr>\n
Slow Start<\/td>\nInternal (limits inrush current)<\/td>\n<\/tr>\n
Protection<\/td>\nOCP, OVP, thermal shutdown, UVLO<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40 to +125 C (junction)<\/td>\n<\/tr>\n
Paquete<\/td>\nSOIC-8 (4.9 x 6.0 mm)<\/td>\n<\/tr>\n
Status<\/td>\nActivo<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • 5.5-36V wide input voltage range<\/li>\n
  • 2A continuous output current<\/li>\n
  • 110mOhm integrated MOSFET for high efficiency<\/li>\n
  • Internal compensation reduces external component count<\/li>\n
  • 500kHz fixed frequency for small filter components<\/li>\n
  • Input voltage feed-forward improves line transient response<\/li>\n
  • Internal slow start limits inrush current<\/li>\n
  • Active-high enable with 18uA shutdown current<\/li>\n
  • OCP, OVP, and thermal shutdown protection<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • 12V\/24V distributed power systems<\/li>\n
    • Industrial and automotive power supplies<\/li>\n
    • Battery-powered equipment<\/li>\n
    • Set-top boxes and networking equipment<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The TPS5420DDAR from Texas Instruments is a 2A, 500kHz step-down converter with 5.5-36V input range in an 8-pin SOIC package. With integrated 110mOhm N-channel MOSFET, internal compensation, adjustable output down to 1.22V, and up to 95% efficiency, it provides a simple and compact buck regulator solution. Key Specifications Topology Step-down (Buck) converter Input […]<\/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-5474","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"2A buck, 5.5-36V in, 500kHz, internal FET, SOIC-8","date_code":"","package_case":"SOIC-8 (4.9 x 6.0 x 1.58 mm)","in_stock":7119,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/tps5420.pdf","price":"$1.80 @ 1ku","product_introduction":"The TPS5420DDAR from Texas Instruments is a 2A step-down (buck) switching regulator with integrated 110mOhm N-channel MOSFET in an 8-pin SOIC package. The DDA denotes the SOIC-8 (thermally enhanced) package, R denotes tape and reel (2500 pcs\/reel). The device accepts a wide 5.5-36V input and produces an adjustable output from 1.22V to 31V at up to 2A continuous (3A peak). The 500kHz fixed switching frequency keeps the external inductor and capacitor values small, reducing solution size. The integrated 110mOhm high-side MOSFET eliminates the need for an external switch, reducing component count and ensuring high efficiency up to 95%. Internal compensation simplifies design by removing the need for external compensation components, though this limits the range of LC output filter values that can be used. Input voltage feed-forward maintains constant loop gain over the input range, improving line regulation and transient response compared to conventional voltage-mode control. An internal slow-start circuit limits inrush current during startup. The active-high ENA pin reduces quiescent current to 18uA in shutdown. Protection features include pulse-by-pulse overcurrent limiting, output overvoltage protection, undervoltage lockout (UVLO at 5.5V), and thermal shutdown.","working_principle":"The TPS5420DDAR operates through five subsystems: (1) Power Stage: The integrated N-channel MOSFET connects VIN to the output through an external inductor. When the MOSFET is ON, current flows from VIN through the MOSFET and inductor to the output capacitor and load, storing energy in the inductor. When the MOSFET turns OFF, the external Schottky catch diode provides a path for inductor current to continue flowing to the output. (2) Voltage Mode Control with Feed-Forward: An internal error amplifier compares the FB pin voltage (from an external resistor divider on VOUT) with the 1.22V reference. The error amplifier output controls the PWM duty cycle. An input voltage feed-forward circuit adjusts the PWM ramp amplitude proportionally to VIN, maintaining constant loop gain and improving line transient response without requiring a change in compensation. (3) Internal Compensation: The error amplifier includes internal Type-II compensation (a zero and a pole), which is optimized for a specific range of output LC filter values. This simplifies design but requires the designer to choose inductor and capacitor values that work with the internal compensation. (4) Slow Start: An internal ramp gradually increases the duty cycle from zero to the regulation point over approximately 2ms, limiting inrush current in the output capacitor and preventing output overshoot. (5) Protection: Cycle-by-cycle current limiting (by monitoring the MOSFET current), output overvoltage protection (by comparing FB with an OVP threshold), UVLO (prevents operation below 5.5V), and thermal shutdown (disables output above approximately 165C junction temperature).","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Description<\/th><\/tr>
      1<\/td>BOOT<\/td>Power<\/td>Bootstrap capacitor (connect to PH pin)<\/td><\/tr>
      2<\/td>VIN<\/td>Power<\/td>Input voltage (5.5-36V)<\/td><\/tr>
      3<\/td>PH<\/td>Output<\/td>Phase node (inductor connection)<\/td><\/tr>
      4<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>
      5<\/td>VSENSE<\/td>Input<\/td>Feedback (connect to output divider)<\/td><\/tr>
      6<\/td>ENA<\/td>Input<\/td>Enable (high=on, low=shutdown)<\/td><\/tr>
      7<\/td>COMP<\/td>I\/O<\/td>Error amplifier output \/ compensation<\/td><\/tr>
      8<\/td>SS\/SDA<\/td>I\/O<\/td>Soft-start \/ sync (internal slow start)<\/td><\/tr><\/table>","application_scenarios":"
      • 12V to 3.3V\/2A point-of-load supply with 10uH inductor, 100uF output capacitor, 1N5822 Schottky diode, and 500kHz switching for compact solution size<\/li>
      • 24V industrial bus to 5V\/2A with 95% peak efficiency using internal MOSFET, internal compensation, and feed-forward for excellent line regulation<\/li>
      • Battery-powered 4-cell Li-ion (10-16.8V) to 5V\/1.5A with 18uA shutdown current and ENA pin for power gating<\/li>
      • Set-top box 12V to 1.8V\/2A core supply with internal slow start preventing output overshoot and OVP protecting downstream ICs<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Iout<\/th>Vin<\/th>Notes<\/th><\/tr>
        TPS5430DDAR<\/td>TI<\/td>3A<\/td>5.5-36V<\/td>Higher current version<\/td><\/tr>
        LM2596S-ADJ<\/td>TI<\/td>3A<\/td>4.5-40V<\/td>Lower freq (150kHz)<\/td><\/tr>
        TPS54202DDCR<\/td>TI<\/td>2A<\/td>4.5-28V<\/td>Smaller package (SOT-23)<\/td><\/tr>
        XL1509-5.0E1<\/td>XLSEMI<\/td>2A<\/td>4.5-40V<\/td>Lower cost alternative<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/5474","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=5474"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/5474\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=5474"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=5474"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=5474"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=5474"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}