{"id":7503,"date":"2026-06-25T07:38:23","date_gmt":"2026-06-25T07:38:23","guid":{"rendered":"https:\/\/materialparts.com\/lt1764eqtrpbf\/"},"modified":"2026-06-25T07:38:23","modified_gmt":"2026-06-25T07:38:23","slug":"lt1764eqtrpbf","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/lt1764eqtrpbf\/","title":{"rendered":"LT1764EQ#TRPBF"},"content":{"rendered":"

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

The LT1764EQ#TRPBF from Analog Devices is a 3A low-dropout (LDO) regulator with fast transient response and low noise in TSSOP-16 package. With 340mV max dropout at 3A and 20uV RMS output noise, it provides clean power for noise-sensitive applications.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
\u8f93\u51fa\u7535\u6d41<\/td>\n3 A<\/td>\n<\/tr>\n
Dropout Voltage<\/td>\n340 mV max @ 3A<\/td>\n<\/tr>\n
Output Noise<\/td>\n20 uV RMS (10Hz-100kHz)<\/td>\n<\/tr>\n
\u8f93\u5165\u7535\u538b\u8303\u56f4<\/td>\n2.7 V to 20 V<\/td>\n<\/tr>\n
Output Voltage<\/td>\nAdjustable (1.21V reference)<\/td>\n<\/tr>\n
Line Regulation<\/td>\n0.3 mV typical<\/td>\n<\/tr>\n
Load Regulation<\/td>\n5 mV typical<\/td>\n<\/tr>\n
Transient Response<\/td>\n< 10us for 3A step<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nTSSOP-16 (E suffix)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40 to +125 C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • 3A output current with only 340mV dropout for efficient regulation<\/li>\n
  • 20uV RMS output noise ideal for RF and precision analog circuits<\/li>\n
  • Fast transient response under 10us for dynamic loads<\/li>\n
  • Adjustable output from 1.21V using external resistor divider<\/li>\n
  • Thermal shutdown and current limit protection<\/li>\n
  • SHDN pin for logic-controlled power sequencing<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • RF power amplifier power supply<\/li>\n
    • High-speed ADC\/DAC reference supply<\/li>\n
    • FPGA and DSP core power<\/li>\n
    • Post-regulation for switching supplies<\/li>\n
    • Medical imaging low-noise power<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LT1764EQ#TRPBF from Analog Devices is a 3A low-dropout (LDO) regulator with fast transient response and low noise in TSSOP-16 package. With 340mV max dropout at 3A and 20uV RMS output noise, it provides clean power for noise-sensitive applications. Key Specifications Output Current 3 A Dropout Voltage 340 mV max @ 3A Output […]<\/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":[13,32],"tags":[],"chip_brand":[165],"class_list":["post-7503","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-low-dropout-regulators-ldo","chip_brand-adi"],"acf":{"brief_explanation":"3A LDO, 340mV dropout, 20uV RMS noise, adjustable, TSSOP-16","date_code":"","package_case":"TSSOP-16 (5 x 4.4 x 1.0 mm)","in_stock":4567,"datasheet":"https:\/\/www.analog.com\/en\/products\/lt1764.html","price":"$5.50 @ 1ku","product_introduction":"The LT1764EQ#TRPBF from Analog Devices is a 3A low-dropout (LDO) regulator optimized for fast transient response and ultra-low output noise. With only 340mV maximum dropout voltage at 3A output current and 20uV RMS output noise over the 10Hz to 100kHz bandwidth, it provides exceptionally clean power for noise-sensitive RF and precision analog circuits. The output voltage is adjustable from 1.21V using an external resistor divider, and the input voltage range extends up to 20V. The device features fast transient response under 10us for a 3A load step, thermal shutdown and current limit protection, and a shutdown pin for logic-controlled power sequencing. The E suffix denotes TSSOP-16 package and TRPBF indicates tape and reel with lead-free finish.","working_principle":"The LT1764EQ#TRPBF operates as a low-dropout linear regulator using a PNP pass transistor. (1) The error amplifier compares a fraction of the output voltage (from the external resistor divider) against the internal 1.21V reference, and drives the PNP pass transistor to maintain regulation. The PNP architecture allows the very low dropout voltage since the pass transistor saturation voltage can be as low as 340mV at 3A. (2) The ultra-low 20uV RMS output noise is achieved by an optimized internal reference design and by placing a noise reduction capacitor (CNR) from the REF\/BYP pin to ground, which filters the reference noise bandwidth. (3) The fast transient response is achieved through a high-bandwidth error amplifier and a low-ESR output capacitor network. When the load current steps from 0 to 3A, the error amplifier rapidly adjusts the pass transistor gate drive, and the output capacitor supplies the transient current until the loop settles within 10us.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>OUT<\/td>Regulator output<\/td><\/tr>
      2<\/td>SENSE<\/td>Remote sense (adjustable version)<\/td><\/tr>
      3-4<\/td>OUT<\/td>Regulator output (multiple pins)<\/td><\/tr>
      5<\/td>ADJ<\/td>Adjust feedback input<\/td><\/tr>
      6<\/td>GND<\/td>Ground<\/td><\/tr>
      7<\/td>SHDN<\/td>Shutdown (active low)<\/td><\/tr>
      8<\/td>REF\/BYP<\/td>Reference bypass (noise reduction)<\/td><\/tr>
      9-12<\/td>IN<\/td>Input supply (multiple pins)<\/td><\/tr>
      13<\/td>IN<\/td>Input supply<\/td><\/tr>
      14-16<\/td>GND\/OUT<\/td>Ground\/Output tabs<\/td><\/tr><\/table>","application_scenarios":"
      • RF power amplifier power supply requiring ultra-low noise and fast transient response<\/li>
      • High-speed ADC\/DAC reference supply with 20uV RMS noise floor<\/li>
      • FPGA and DSP core power with 3A dynamic current demand<\/li>
      • Post-regulation after switching converter for noise-sensitive loads<\/li>
      • Medical imaging system low-noise power supply<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        LT1764EQ-3.3#TRPBF<\/td>Analog Devices<\/td>Fixed 3.3V output version<\/td><\/tr>
        LT1764EQ-5#TRPBF<\/td>Analog Devices<\/td>Fixed 5V output version<\/td><\/tr>
        LT1963AEQ#TRPBF<\/td>Analog Devices<\/td>1.5A, lower noise, same family<\/td><\/tr>
        TPS7A7001RGW<\/td>TI<\/td>3A LDO, 6V input, QFN<\/td><\/tr>
        LT3045EMSE<\/td>Analog Devices<\/td>0.5A, 0.8uV RMS noise, ultralow<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/7503","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=7503"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/7503\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=7503"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=7503"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=7503"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=7503"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}