{"id":8608,"date":"2026-06-29T06:56:38","date_gmt":"2026-06-29T06:56:38","guid":{"rendered":"https:\/\/materialparts.com\/ltm4644eypbf\/"},"modified":"2026-06-29T06:56:38","modified_gmt":"2026-06-29T06:56:38","slug":"ltm4644eypbf","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/ltm4644eypbf\/","title":{"rendered":"LTM4644EY#PBF"},"content":{"rendered":"

Productos<\/h2>\n

The Analog Devices LTM4644EY#PBF is a quad DC\/DC step-down uModule (micromodule) regulator with 4 A per output, configurable up to 16 A when paralleled. Packaged in a 77-lead BGA (9 x 15 x 5.01 mm), it integrates switching controllers, power FETs, inductors, and support components, requiring only external input and output capacitors for a complete quad-output power supply solution.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n
Input Voltage Range<\/td>\n4 V to 14 V (2.375 V with external bias)<\/td>\n<\/tr>\n
Output Voltage Range<\/td>\n0.6 V to 5.5 V<\/td>\n<\/tr>\n
Corriente de salida<\/td>\n4 A DC per channel (5 A peak)<\/td>\n<\/tr>\n
Total Regulation Accuracy<\/td>\n\u00b11.5%<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40\u00b0C to +125\u00b0C<\/td>\n<\/tr>\n
Paquete<\/td>\n77-Lead BGA (9 x 15 x 5.01 mm)<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • Quad output step-down with 4 A per channel<\/li>\n
  • Outputs paralleable for up to 16 A capability<\/li>\n
  • Current mode control for fast transient response<\/li>\n
  • Output voltage tracking and soft-start<\/li>\n
  • Internal temperature sensing diode<\/li>\n
  • External frequency synchronization<\/li>\n
  • Overvoltage, overcurrent, and overtemperature protection<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Multi-rail FPGA\/DSP\/ASIC point-of-load regulation<\/li>\n
    • Telecom and networking equipment<\/li>\n
    • Server and data center power supplies<\/li>\n
    • Test and measurement instruments<\/li>\n
    • Medical imaging systems<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The Analog Devices LTM4644EY#PBF is a quad DC\/DC step-down uModule (micromodule) regulator with 4 A per output, configurable up to 16 A when paralleled. Packaged in a 77-lead BGA (9 x 15 x 5.01 mm), it integrates switching controllers, power FETs, inductors, and support components, requiring only external input and output capacitors for […]<\/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":[],"chip_brand":[165],"class_list":["post-8608","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","chip_brand-adi"],"acf":{"brief_explanation":"Quad 4A DC\/DC uModule regulator, 4-14V in, 0.6-5.5V out, paralleable to 16A, BGA-77","date_code":"","package_case":"77-Lead BGA (9 x 15 x 5.01 mm, 1.9g)","in_stock":2684,"datasheet":"https:\/\/www.analog.com\/media\/en\/technical-documentation\/data-sheets\/ltm4644-4644-1.pdf","price":"$18.50 @ 1ku","product_introduction":"The LTM4644EY#PBF from Analog Devices is a quad output step-down DC\/DC uModule regulator providing 4 A per channel with the ability to parallel outputs for up to 16 A total. The module integrates the switching controllers, power MOSFETs, inductors, and all support components in a compact 9 x 15 x 5.01 mm BGA package\u2014only bulk input and output capacitors are needed to complete the design. Operating over an input range of 4 V to 14 V (down to 2.375 V with external bias), the device supports output voltages from 0.6 V to 5.5 V with \u00b11.5% total regulation accuracy. Current mode control ensures fast transient response and easy loop compensation.","working_principle":"Each of the four channels in the LTM4644EY operates as an independent current-mode buck converter. The internal controller generates PWM signals to drive the integrated high-side and low-side MOSFETs, stepping down the input voltage to the desired output level. The output voltage is set by an external resistor divider from VOUT to the FB pin (the LTM4644-1 variant integrates the top feedback resistor). Current mode control uses the inductor current as the inner loop variable, providing cycle-by-cycle current limiting and inherent input voltage feedforward for improved line regulation. The RUN pin controls each channel independently, while the TRACK\/SS pin enables output voltage tracking and programmable soft-start. The CLKIN\/CLKOUT pins allow multiple modules to synchronize their switching frequencies, preventing beat-frequency interference in noise-sensitive systems.","pin_description":"\n
      Pin Group<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>\n
      A1-A5<\/td>VOUT1<\/td>Power Output<\/td>Channel 1 output voltage<\/td><\/tr>\n
      B5<\/td>SVIN1<\/td>Power<\/td>Channel 1 signal VIN<\/td><\/tr>\n
      B6<\/td>MODE1<\/td>Config<\/td>Channel 1 mode setting (CCM\/BCM)<\/td><\/tr>\n
      C5<\/td>RUN1<\/td>Input<\/td>Channel 1 run control<\/td><\/tr>\n
      D6<\/td>COMP1<\/td>Analog<\/td>Channel 1 compensation<\/td><\/tr>\n
      E5<\/td>INTVCC1<\/td>Power<\/td>Channel 1 internal supply<\/td><\/tr>\n
      G5-G7<\/td>FB1-FB4<\/td>Analog Input<\/td>Feedback pins for channels 1-4<\/td><\/tr>\n
      H5<\/td>SGND<\/td>Ground<\/td>Signal ground<\/td><\/tr>\n
      K5<\/td>TEMP<\/td>Analog Output<\/td>Internal temperature diode output<\/td><\/tr>\n
      L5<\/td>CLKIN<\/td>Input<\/td>External clock synchronization input<\/td><\/tr>\n
      L7<\/td>VIN1-VIN4<\/td>Power Input<\/td>Channel input voltage (4-14V)<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • Quad-rail FPGA core, I\/O, and memory power (0.9V\/1.0V\/1.2V\/1.5V)<\/li>\n
      • Multi-rail DSP and ASIC point-of-load regulation<\/li>\n
      • Telecom blade server distributed power architecture<\/li>\n
      • Medical imaging system multi-voltage power supply<\/li>\n
      • High-current (16A) single-rail supply using parallel configuration<\/li>\n<\/ul>","alternative_models":"\n
        Manufacturer<\/th>Part Number<\/th>Outputs<\/th>Current<\/th>Notes<\/th><\/tr>\n
        ADI<\/td>LTM4644IY#PBF<\/td>4<\/td>4 A\/ch<\/td>Industrial grade version<\/td><\/tr>\n
        ADI<\/td>LTM4650<\/td>2<\/td>25 A\/ch<\/td>Higher current, dual channel<\/td><\/tr>\n
        TI<\/td>TPS546D24A<\/td>1<\/td>40 A<\/td>Single channel, higher current<\/td><\/tr>\n
        ADI<\/td>LTM4620<\/td>2<\/td>13 A\/ch<\/td>Dual higher-current uModule<\/td><\/tr>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/8608","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=8608"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/8608\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=8608"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=8608"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=8608"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=8608"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}