{"id":9167,"date":"2026-07-02T12:01:46","date_gmt":"2026-07-02T12:01:46","guid":{"rendered":"https:\/\/materialparts.com\/mpq2483ads-aec1-lf-z\/"},"modified":"2026-07-03T08:04:47","modified_gmt":"2026-07-03T08:04:47","slug":"mpq2483ads-aec1-lf-z","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/mpq2483ads-aec1-lf-z\/","title":{"rendered":"MPQ2483ADS-AEC1-LF-Z"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

The MPQ2483ADS-AEC1-LF-Z is a Monolithic Power Systems (MPS) AEC-Q100 qualified 55V, 2.5A LED driver suitable for buck or buck-boost topologies. It features both analog and PWM dimming on a single control pin, a 0.28\u03a9 internal power MOSFET switch, and comprehensive protection including open-string, short-circuit, and thermal shutdown.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n
\u8f93\u5165\u7535\u538b\u8303\u56f4<\/td>\n4.5V to 55V<\/td>\n<\/tr>\n
LED Current<\/td>\n2.5A peak<\/td>\n<\/tr>\n
Internal MOSFET RDS(ON)<\/td>\n0.28\u03a9<\/td>\n<\/tr>\n
Reference Voltage<\/td>\n0.198V<\/td>\n<\/tr>\n
Dimming<\/td>\nAnalog + PWM (single EN\/DIM pin)<\/td>\n<\/tr>\n
\u5173\u673a\u7535\u6d41<\/td>\n5\u03bcA<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40\u00b0C to +125\u00b0C<\/td>\n<\/tr>\n
\u8d44\u683c<\/td>\nAEC-Q100<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • AEC-Q100 qualified for automotive LED applications<\/li>\n
  • Buck or buck-boost topology support<\/li>\n
  • Wide 4.5V to 55V input range<\/li>\n
  • Integrated 0.28\u03a9 power MOSFET switch<\/li>\n
  • Combined analog and PWM dimming on single pin<\/li>\n
  • Separate input reference ground for positive-to-negative conversion<\/li>\n
  • Low 0.198V reference voltage for high efficiency<\/li>\n
  • Cycle-by-cycle over-current protection<\/li>\n
  • Output over-voltage, open-string, and short-circuit protection<\/li>\n
  • 5\u03bcA shutdown current<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Automotive LED headlight drivers<\/li>\n
    • Daytime running lights (DRL)<\/li>\n
    • Fog light LED drivers<\/li>\n
    • Automotive interior LED lighting<\/li>\n
    • Industrial LED illumination<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The MPQ2483ADS-AEC1-LF-Z is a Monolithic Power Systems (MPS) AEC-Q100 qualified 55V, 2.5A LED driver suitable for buck or buck-boost topologies. It features both analog and PWM dimming on a single control pin, a 0.28\u03a9 internal power MOSFET switch, and comprehensive protection including open-string, short-circuit, and thermal shutdown. Key Specifications Input Voltage Range 4.5V […]<\/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":[13,33],"tags":[712],"chip_brand":[172],"class_list":["post-9167","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-led-driver-ics","tag-mpq2483ads-aec1-lf-z","chip_brand-mps"],"acf":{"brief_explanation":"AEC-Q100 55V 2.5A LED driver, buck\/buck-boost, analog+PWM dimming, 0.28\u03a9 FET, QFN-10","date_code":"","package_case":"QFN-10 (3mm x 3mm)","in_stock":6608,"datasheet":"https:\/\/www.monolithicpower.com\/en\/mpq2483a-aec1.html","price":"$2.10 @ 1ku","product_introduction":"The MPQ2483ADS-AEC1-LF-Z is an MPS AEC-Q100 qualified 55V, 2.5A LED driver supporting both buck and buck-boost topologies. It integrates a 0.28\u03a9 power MOSFET switch and features combined analog and PWM dimming on a single EN\/DIM pin. The separate input reference ground enables direct control for positive-to-negative power conversion in buck-boost configurations. With 0.198V low reference voltage, 5\u03bcA shutdown current, and comprehensive protection (OCP, OVP, SCP, open-string, thermal shutdown), it is ideal for automotive headlight, DRL, and fog light LED applications.","working_principle":"The MPQ2483ADS-AEC1-LF-Z operates as a current-mode LED driver. The error amplifier compares the LED current sense voltage (across an external sense resistor) against the 0.198V internal reference. The error amplifier output controls the peak inductor current through the PWM comparator and RS flip-flop, which drives the internal 0.28\u03a9 MOSFET switch. The external Schottky diode conducts the inductor current during the off-time. The EN\/DIM pin serves dual purpose: a DC voltage above the enable threshold turns on the device, and voltage variations around the threshold provide analog dimming. A PWM signal on the same pin chops the LED current on and off for PWM dimming. In buck-boost mode, the separate input reference ground (VSS) allows the LED cathode to be connected below ground, enabling positive-to-negative conversion. OVP monitors the output voltage through a resistor divider, and open-string protection activates when the OVP threshold is reached.","pin_description":"
      Pin<\/th>Mnemonic<\/th>Description<\/th><\/tr>
      1<\/td>SW<\/td>Switch node (internal MOSFET drain)<\/td><\/tr>
      2<\/td>GND<\/td>Ground (signal reference)<\/td><\/tr>
      3<\/td>VSS<\/td>Input reference ground for buck-boost<\/td><\/tr>
      4<\/td>EN\/DIM<\/td>Enable and dimming control pin<\/td><\/tr>
      5<\/td>FB<\/td>Current sense feedback input<\/td><\/tr>
      6<\/td>COMP<\/td>Error amplifier compensation<\/td><\/tr>
      7<\/td>OVP<\/td>Output over-voltage protection pin<\/td><\/tr>
      8<\/td>VDD<\/td>Internal LDO output \/ bias<\/td><\/tr>
      9<\/td>BST<\/td>Bootstrap capacitor<\/td><\/tr>
      10<\/td>INGND<\/td>Input ground (power reference)<\/td><\/tr><\/table>","application_scenarios":"
      • Automotive LED headlight driver in buck-boost mode from 9-16V battery<\/li>\n
      • DRL and position light with PWM dimming from body controller<\/li>\n
      • Fog light LED constant current driver with OVP and open-string protection<\/li>\n
      • Automotive interior ambient LED lighting with analog brightness control<\/li>\n
      • Industrial 12V\/24V LED illumination with 55V input tolerance<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        MPQ24833-B<\/td>MPS<\/td>3A, 60V, non-automotive version<\/td><\/tr>
        AL8860SP-13<\/td>Diodes Inc<\/td>60V, 1A buck LED driver<\/td><\/tr>
        LT3956<\/td>ADI<\/td>80V, 3.3A LED driver<\/td><\/tr>
        TPS92515<\/td>TI<\/td>45V, 2A buck LED driver<\/td><\/tr>
        MPQ28163GD-AEC1<\/td>MPS<\/td>Buck-boost, 1.5A, automotive<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9167","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=9167"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9167\/revisions"}],"predecessor-version":[{"id":9512,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9167\/revisions\/9512"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=9167"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=9167"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=9167"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=9167"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}