{"id":7826,"date":"2026-06-27T04:27:33","date_gmt":"2026-06-27T04:27:33","guid":{"rendered":"https:\/\/materialparts.com\/fan3227tmx\/"},"modified":"2026-06-27T12:32:58","modified_gmt":"2026-06-27T12:32:58","slug":"fan3227tmx","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/fan3227tmx\/","title":{"rendered":"FAN3227TMX"},"content":{"rendered":"

FAN3227TMX \u2014 Dual 2A High-Speed Low-Side Gate Driver<\/h1>\n

1. Component Overview<\/h2>\n

\u0625\u0646 FAN3227TMX<\/strong> is a dual 2A high-speed, low-side gate driver manufactured by \u0623\u0648\u0646\u0633\u0645\u064a<\/strong> (formerly Fairchild Semiconductor). It is designed to drive N-channel enhancement-mode MOSFETs in low-side switching applications by providing high peak current pulses during short switching intervals. The device features TTL input thresholds, dual non-inverting channels with independent enable pins, and incorporates onsemi’s proprietary MillerDrive\u2122<\/strong> architecture for optimal switching performance.<\/p>\n

The FAN3227 provides matched internal propagation delays between channels A and B (within 1 ns), making it ideal for synchronous rectifier applications. Channels can be paralleled to effectively double the drive current. The device is available in an 8-lead SOIC package and is rated for operation from \u201340\u00b0C to +125\u00b0C.<\/p>\n

2. Key Specifications<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nValue<\/th>\n<\/tr>\n
\u0627\u0644\u0634\u0631\u0643\u0629 \u0627\u0644\u0645\u0635\u0646\u0639\u0629<\/td>\n\u0623\u0648\u0646\u0633\u0645\u064a<\/td>\n<\/tr>\n
\u0631\u0642\u0645 \u0627\u0644\u062c\u0632\u0621<\/td>\nFAN3227TMX<\/td>\n<\/tr>\n
Component Type<\/td>\nDual Low-Side Gate Driver<\/td>\n<\/tr>\n
Driver Configuration<\/td>\nLow-Side, Non-Inverting<\/td>\n<\/tr>\n
\u0639\u062f\u062f \u0627\u0644\u0642\u0646\u0648\u0627\u062a<\/td>\n2 (Dual independent + Enable)<\/td>\n<\/tr>\n
Supply Voltage (VDD)<\/td>\n4.5V to 18V<\/td>\n<\/tr>\n
Peak Output Current (Sink\/Source)<\/td>\n3A \/ 3A (at VDD = 12V)<\/td>\n<\/tr>\n
Continuous Output Current<\/td>\n2.4A Sink \/ 1.6A Source (at VOUT = 6V)<\/td>\n<\/tr>\n
Input Threshold<\/td>\nTTL Compatible<\/td>\n<\/tr>\n
Rise Time (typical)<\/td>\n12 ns (at 1 nF load)<\/td>\n<\/tr>\n
Fall Time (typical)<\/td>\n9 ns (at 1 nF load)<\/td>\n<\/tr>\n
Propagation Delay (typical)<\/td>\n19 ns (turn-on) \/ 18 ns (turn-off)<\/td>\n<\/tr>\n
Channel-to-Channel Delay Matching<\/td>\n\u2264 2 ns<\/td>\n<\/tr>\n
Under-Voltage Lockout (UVLO)<\/td>\nYes (integrated)<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\n8-SOIC (3.90 mm width)<\/td>\n<\/tr>\n
\u0646\u0648\u0639 \u0627\u0644\u062a\u0631\u0643\u064a\u0628<\/td>\nSurface Mount (SMT)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n\u201340\u00b0C to +125\u00b0C<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0645\u0646 \u0627\u0644\u062a\u0641\u0631\u064a\u063a \u0627\u0644\u0643\u0647\u0631\u0648\u0645\u063a\u0646\u0627\u0637\u064a\u0633\u064a \u0627\u0644\u062b\u0646\u0627\u0626\u064a (HBM)<\/td>\n\u00b12 kV<\/td>\n<\/tr>\n
\u062a\u0635\u0646\u064a\u0641 MSL<\/td>\nMSL 1 \u2014 Unlimited<\/td>\n<\/tr>\n
Packing<\/td>\nTape & Reel (2,500 units\/reel)<\/td>\n<\/tr>\n
RoHS Compliant<\/td>\nYes<\/td>\n<\/tr>\n<\/table>\n

3. Pin Configuration & Package<\/h2>\n

\u0627\u0644\u062d\u0632\u0645\u0629:<\/strong> 8-Lead SOIC (3.90 mm width)<\/p>\n\n\n\n\n\n\n\n\n\n\n
\u0631\u0642\u0645 \u0627\u0644\u062f\u0628\u0648\u0633.<\/th>\n\u0627\u0633\u0645 \u0627\u0644\u062f\u0628\u0648\u0633<\/th>\n\u0627\u0644\u0648\u0638\u064a\u0641\u0629<\/th>\n<\/tr>\n
1<\/td>\nENA<\/td>\nEnable Input for Channel A (active HIGH, defaults ON if floating)<\/td>\n<\/tr>\n
2<\/td>\nINA<\/td>\nNon-Inverting Input for Channel A<\/td>\n<\/tr>\n
3<\/td>\nGND<\/td>\nGround Reference<\/td>\n<\/tr>\n
4<\/td>\nENB<\/td>\nEnable Input for Channel B (active HIGH, defaults ON if floating)<\/td>\n<\/tr>\n
5<\/td>\nINB<\/td>\nNon-Inverting Input for Channel B<\/td>\n<\/tr>\n
6<\/td>\nVDD<\/td>\nSupply Voltage (4.5V \u2013 18V)<\/td>\n<\/tr>\n
7<\/td>\nOUTA<\/td>\nGate Drive Output A<\/td>\n<\/tr>\n
8<\/td>\nOUTB<\/td>\nGate Drive Output B<\/td>\n<\/tr>\n<\/table>\n

4. Features & Functional Description<\/h2>\n
    \n
  • MillerDrive\u2122 Technology:<\/strong> Bipolar-MOSFET output stage provides high current during the Miller plateau region of MOSFET switching, minimizing switching losses while delivering rail-to-rail voltage swing and reverse current capability.<\/li>\n
  • Matched Propagation Delays:<\/strong> Channel-to-channel delay matching within 1\u20132 ns ensures precise timing for synchronous rectification and paralleled driver configurations.<\/li>\n
  • Dual Independent Enable:<\/strong> Each channel has its own enable pin with TTL thresholds. Enable pins default to ON when left unconnected, thanks to internal pull-up resistors.<\/li>\n
  • Under-Voltage Lockout (UVLO):<\/strong> Internal circuitry holds the output LOW until VDD rises above the operating threshold, preventing incomplete MOSFET turn-on.<\/li>\n
  • Internal Input Resistors:<\/strong> If inputs are left unconnected, internal 100 k\u03a9 resistors pull inputs LOW, ensuring outputs remain LOW and MOSFETs stay off.<\/li>\n
  • Paralleled Output Capability:<\/strong> Channels A and B can be connected in parallel to double the peak drive current for a single MOSFET.<\/li>\n
  • Wide Supply Range:<\/strong> 4.5V to 18V operation covers most power supply rail voltages.<\/li>\n<\/ul>\n

    5. \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a \u0627\u0644\u0646\u0645\u0648\u0630\u062c\u064a\u0629<\/h2>\n
      \n
    • AC-DC Power Supplies:<\/strong> Server and workstation power supplies requiring fast, efficient MOSFET switching.<\/li>\n
    • Synchronous Rectifiers:<\/strong> Matched channel delays enable precise dead-time control.<\/li>\n
    • DC-DC Converters:<\/strong> Low-side drive for buck, boost, and flyback topologies.<\/li>\n
    • Motor Drive Circuits:<\/strong> Half-bridge and H-bridge low-side switching.<\/li>\n
    • Solenoid & Relay Drivers:<\/strong> High peak current for fast turn-on\/turn-off of inductive loads.<\/li>\n
    • LED Lighting Drivers:<\/strong> PWM-controlled MOSFET switching in LED drivers.<\/li>\n
    • Automotive Electronics:<\/strong> AEC-Q100 qualified versions (F085 suffix) available for automotive applications.<\/li>\n<\/ul>\n

      6. Equivalent & Alternative Parts<\/h2>\n\n\n\n\n\n\n\n\n\n
      \u0631\u0642\u0645 \u0627\u0644\u062c\u0632\u0621<\/th>\n\u0627\u0644\u0634\u0631\u0643\u0629 \u0627\u0644\u0645\u0635\u0646\u0639\u0629<\/th>\n\u0627\u0644\u0648\u0635\u0641<\/th>\nKey Differences<\/th>\n<\/tr>\n
      FAN3226TMX<\/td>\n\u0623\u0648\u0646\u0633\u0645\u064a<\/td>\nDual inverting + Enable version<\/td>\nInverting logic; otherwise identical specs<\/td>\n<\/tr>\n
      FAN3228TMX<\/td>\n\u0623\u0648\u0646\u0633\u0645\u064a<\/td>\nDual inputs, FAN3225x-compatible pinout<\/td>\nDual input per channel (inverting + non-inverting)<\/td>\n<\/tr>\n
      FAN3229TMX<\/td>\n\u0623\u0648\u0646\u0633\u0645\u064a<\/td>\nDual inputs, TPS2814D-compatible pinout<\/td>\nAlternative pinout for TPS2814D drop-in<\/td>\n<\/tr>\n
      TC1427<\/td>\n\u0627\u0644\u0631\u0642\u0627\u0642\u0629 \u0627\u0644\u062f\u0642\u064a\u0642\u0629<\/td>\nDual 1.5A low-side gate driver<\/td>\nLower peak current (1.5A), wider voltage range<\/td>\n<\/tr>\n
      UCC27424<\/td>\n\u062a\u0643\u0633\u0627\u0633 \u0625\u0646\u0633\u062a\u0631\u0648\u0645\u0646\u062a\u0633<\/td>\nDual 4A high-speed low-side driver<\/td>\nHigher peak current (4A), similar package<\/td>\n<\/tr>\n
      IR4427<\/td>\n\u0625\u0646\u0641\u064a\u0646\u064a\u0648\u0646<\/td>\nDual 1.8A low-side gate driver<\/td>\nSlightly lower current, different pinout<\/td>\n<\/tr>\n
      MCP1407<\/td>\n\u0627\u0644\u0631\u0642\u0627\u0642\u0629 \u0627\u0644\u062f\u0642\u064a\u0642\u0629<\/td>\nDual 3A high-speed low-side driver<\/td>\nComparable current, similar application range<\/td>\n<\/tr>\n<\/table>\n

      7. Design Recommendations<\/h2>\n
        \n
      • Place a 0.1 \u00b5F ceramic bypass capacitor as close as possible to the VDD\u2013GND pins for high-frequency noise decoupling.<\/li>\n
      • Use short, wide PCB traces between the driver outputs and MOSFET gates to minimize parasitic inductance and ringing.<\/li>\n
      • For paralleled channel operation, add small gate resistors (1\u201310 \u03a9) in series with each output to balance current sharing.<\/li>\n
      • When driving MOSFETs with high gate charge, verify that the driver can deliver sufficient average current at the target switching frequency.<\/li>\n
      • If the application requires automotive-grade reliability, specify the F085-suffixed variant (FAN3227TMX-F085), which is AEC-Q100 qualified.<\/li>\n
      • Enable pins can be left unconnected for always-on operation; connect to a logic signal for power-saving shutdown control.<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

        FAN3227TMX \u2014 Dual 2A High-Speed Low-Side Gate Driver 1. Component Overview The FAN3227TMX is a dual 2A high-speed, low-side gate driver manufactured by onsemi (formerly Fairchild Semiconductor). It is designed to drive N-channel enhancement-mode MOSFETs in low-side switching applications by providing high peak current pulses during short switching intervals. The device features TTL input thresholds, […]<\/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":[36,13],"tags":[],"chip_brand":[],"class_list":["post-7826","post","type-post","status-publish","format-standard","hentry","category-gate-driver-ics","category-integrated-circuits-ics"],"acf":{"brief_explanation":"Dual 2A high-speed low-side gate driver with MillerDrive technology, 4.5V-18V, 8-SOIC, matched propagation delay <=2ns","date_code":"","package_case":"8-SOIC (3.90 mm width)","in_stock":8532,"datasheet":"https:\/\/www.onsemi.com\/download\/data-sheet\/pdf\/fan3227tm-d.pdf","price":"$0.85 @ 1ku","product_introduction":"The FAN3227TMX is a dual 2A high-speed low-side gate driver from onsemi (formerly Fairchild Semiconductor). It features the proprietary MillerDrive architecture for optimal MOSFET switching performance with rail-to-rail output swing and reverse current capability. The device provides dual non-inverting channels with independent enable pins, matched channel-to-channel propagation delay within 2ns, and TTL-compatible input thresholds.\n\nKey features include integrated under-voltage lockout (UVLO), internal 100k input pull-down resistors, and the ability to parallel channels for doubled drive current. The 8-lead SOIC package and -40C to +125C operating range make it suitable for AC-DC power supplies, synchronous rectifiers, DC-DC converters, motor drives, and LED lighting applications.","working_principle":"The FAN3227TMX operates as a low-side gate driver that provides high peak current pulses to drive N-channel MOSFETs. Its MillerDrive output stage uses a bipolar-MOSFET combination to deliver enhanced current during the Miller plateau region of MOSFET switching, minimizing switching losses.\n\nSignal Path: TTL-compatible input signals pass through level-shifting circuitry to drive the push-pull output stage. Each channel has an independent enable pin with internal pull-up (defaults ON when floating).\n\nProtection: Integrated UVLO holds the output LOW until VDD exceeds the operating threshold. Internal 100k pull-down resistors on inputs ensure outputs remain LOW when inputs are unconnected.\n\nCurrent Delivery: The output stage sources up to 1.6A and sinks up to 2.4A continuously (at VOUT=6V), with peak currents of 3A at VDD=12V. Rise time is 12ns and fall time is 9ns (at 1nF load). Channels can be paralleled with small gate resistors (1-10 ohm) for current sharing.","pin_description":"
        Pin<\/th>Name<\/th>Function<\/th><\/tr>
        1<\/td>ENA<\/td>Enable Input Channel A (active HIGH, defaults ON if floating)<\/td><\/tr>
        2<\/td>INA<\/td>Non-Inverting Input Channel A<\/td><\/tr>
        3<\/td>GND<\/td>Ground Reference<\/td><\/tr>
        4<\/td>ENB<\/td>Enable Input Channel B (active HIGH, defaults ON if floating)<\/td><\/tr>
        5<\/td>INB<\/td>Non-Inverting Input Channel B<\/td><\/tr>
        6<\/td>VDD<\/td>Supply Voltage (4.5V to 18V)<\/td><\/tr>
        7<\/td>OUTA<\/td>Gate Drive Output A<\/td><\/tr>
        8<\/td>OUTB<\/td>Gate Drive Output B<\/td><\/tr><\/table>","application_scenarios":"
        • AC-DC Power Supplies:<\/strong> Server and workstation power supplies requiring fast, efficient MOSFET switching for synchronous rectification.<\/li>
        • DC-DC Converters:<\/strong> Low-side drive for buck, boost, and flyback topologies with 4.5V-18V supply range.<\/li>
        • Synchronous Rectifiers:<\/strong> Matched channel delays (<=2ns) enable precise dead-time control.<\/li>
        • Motor Drive Circuits:<\/strong> Half-bridge and H-bridge low-side switching with high peak current for fast turn-on\/turn-off.<\/li>
        • LED Lighting:<\/strong> PWM-controlled MOSFET switching in LED drivers with paralleled channel capability.<\/li><\/ul>","alternative_models":"
          Part Number<\/th>Manufacturer<\/th>Description<\/th>Key Differences<\/th><\/tr>
          FAN3226TMX<\/td>onsemi<\/td>Dual inverting + Enable<\/td>Inverting logic; otherwise identical<\/td><\/tr>
          UCC27424<\/td>Texas Instruments<\/td>Dual 4A high-speed driver<\/td>Higher peak current (4A)<\/td><\/tr>
          MCP1407<\/td>Microchip<\/td>Dual 3A low-side driver<\/td>Comparable current, similar application<\/td><\/tr>
          IR4427<\/td>Infineon<\/td>Dual 1.8A low-side driver<\/td>Slightly lower current, different pinout<\/td><\/tr>
          TC1427<\/td>Microchip<\/td>Dual 1.5A low-side driver<\/td>Lower peak current, wider voltage range<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7826","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=7826"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7826\/revisions"}],"predecessor-version":[{"id":7829,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7826\/revisions\/7829"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=7826"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=7826"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=7826"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=7826"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}