{"id":7038,"date":"2026-06-23T02:21:22","date_gmt":"2026-06-23T02:21:22","guid":{"rendered":"https:\/\/materialparts.com\/lt1761es5-sdtrpbf\/"},"modified":"2026-06-23T02:21:22","modified_gmt":"2026-06-23T02:21:22","slug":"lt1761es5-sdtrpbf","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/lt1761es5-sdtrpbf\/","title":{"rendered":"LT1761ES5-SD#TRPBF"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The LT1761ES5-SD#TRPBF from Analog Devices (Linear Technology) is a 100mA low-noise LDO linear regulator with shutdown in a SOT-23-5 package. The SD suffix denotes the adjustable output version, featuring 20uVRms output noise, 300mV dropout at 100mA, and 20uA quiescent current, making it ideal for noise-sensitive battery-powered applications.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
\u062c\u0647\u062f \u0627\u0644\u062e\u0631\u062c<\/td>\nAdjustable (SD version)<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\n100 \u0645\u0644\u0644\u064a \u0623\u0645\u0628\u064a\u0631<\/td>\n<\/tr>\n
\u0646\u0637\u0627\u0642 \u062c\u0647\u062f \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\n1.8V ~ 20V<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u062a\u0633\u0631\u0628<\/td>\n300mV (Typical) @ 100mA<\/td>\n<\/tr>\n
\u0636\u0648\u0636\u0627\u0621 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\n20uVRms (Typical, 0.1Hz-100kHz)<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u062a\u0647\u062f\u0626\u0629<\/td>\n20uA (Typical)<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0625\u064a\u0642\u0627\u0641 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n<1uA<\/td>\n<\/tr>\n
Shutdown Function<\/td>\nYes (SD pin)<\/td>\n<\/tr>\n
Minimum Output Capacitor<\/td>\n1uF (Ceramic)<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSOT-23-5 (2.90 x 1.60mm)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40\u00b0C ~ +125\u00b0C<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • Ultra-low 20uVRms output noise for sensitive analog circuits<\/li>\n
  • Very low 300mV dropout voltage at full 100mA load<\/li>\n
  • 20uA quiescent current extends battery life<\/li>\n
  • Shutdown mode draws less than 1uA<\/li>\n
  • Stable with only 1uF ceramic output capacitor<\/li>\n
  • Wide 1.8V to 20V input voltage range<\/li>\n
  • Adjustable output via external resistor divider (SD version)<\/li>\n
  • Lead-free TRPBF packaging<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • RF and wireless receiver power supplies<\/li>\n
    • Low-noise ADC\/DAC reference supplies<\/li>\n
    • Battery-powered instrumentation<\/li>\n
    • Portable medical devices<\/li>\n
    • Cell phone and PDA power management<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LT1761ES5-SD#TRPBF from Analog Devices (Linear Technology) is a 100mA low-noise LDO linear regulator with shutdown in a SOT-23-5 package. The SD suffix denotes the adjustable output version, featuring 20uVRms output noise, 300mV dropout at 100mA, and 20uA quiescent current, making it ideal for noise-sensitive battery-powered applications. Key Specifications Output Voltage Adjustable (SD […]<\/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-7038","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-low-dropout-regulators-ldo","chip_brand-adi"],"acf":{"brief_explanation":"100mA low-noise LDO, adjustable output, 20uVRms noise, 300mV dropout, 20uA Iq, shutdown in SOT-23-5","date_code":"","package_case":"SOT-23-5 (2.90 x 1.60 x 1.10 mm)","in_stock":10710,"datasheet":"https:\/\/www.analog.com\/media\/en\/technical-documentation\/data-sheets\/1761sff.pdf","price":"$1.80 @ 1ku","product_introduction":"The LT1761ES5-SD#TRPBF from Analog Devices (formerly Linear Technology) is a micropower, low-noise LDO linear regulator in a 5-pin SOT-23 package. The SD (adjustable) version allows the output voltage to be set from 1.22V to 20V using an external resistor divider. The device achieves an exceptionally low output noise of 20uVRms over the 0.1Hz to 100kHz bandwidth, making it suitable for powering noise-sensitive RF receivers, high-resolution ADCs, and precision analog circuits. The 300mV dropout voltage at 100mA load enables operation from batteries with minimal voltage headroom. The 20uA quiescent current is among the lowest for any LDO in this performance class, and the shutdown pin reduces supply current to less than 1uA for power-saving modes. The device is stable with just a 1uF ceramic output capacitor, simplifying PCB layout.","working_principle":"The LT1761ES5-SD uses a PNP pass transistor in a series-pass linear regulator topology. The error amplifier compares the feedback voltage (FB pin) with an internal 1.22V bandgap reference and drives the base of the PNP pass transistor to maintain regulation. The low 300mV dropout is achieved because the PNP transistor operates in saturation, requiring only VCE(sat) of headroom rather than the VGS+VDS of MOSFET-based LDOs. The ultra-low output noise is achieved through an internal RC filter on the bandgap reference that attenuates reference noise before it reaches the error amplifier. The shutdown (SD) pin controls the pass transistor bias; when SD is pulled low, the bias circuitry is disabled and the pass transistor is turned off, reducing supply current to less than 1uA. The output capacitor provides frequency compensation and must be at least 1uF with ESR less than 2 ohms for stability.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>OUT<\/td>Regulated output voltage<\/td><\/tr>
      2<\/td>GND<\/td>Ground<\/td><\/tr>
      3<\/td>SD<\/td>Shutdown control - pull low to disable, high or float to enable<\/td><\/tr>
      4<\/td>FB<\/td>Feedback input - connect resistor divider from output<\/td><\/tr>
      5<\/td>IN<\/td>Input supply voltage (1.8V-20V)<\/td><\/tr><\/table>","application_scenarios":"
      • RF Receiver LNA Power<\/b>: 20uVRms output noise preserves receiver sensitivity; 1uF ceramic capacitor enables compact RF module layout<\/li>
      • High-Resolution ADC Reference<\/b>: Ultra-low noise prevents degradation of 16-24 bit ADC effective resolution; adjustable output matches ADC VREF requirements<\/li>
      • Portable Medical Instrument<\/b>: 20uA Iq and sub-1uA shutdown current extend battery life in handheld diagnostic devices<\/li>
      • Wireless Sensor Node<\/b>: Wide 1.8-20V input accommodates single-cell Li-ion to 12V industrial supply; shutdown mode for duty-cycled operation<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        LT1761ES5-3.3#TRPBF<\/td>ADI<\/td>Fixed 3.3V output version<\/td><\/tr>
        LT1761ES5-5#TRPBF<\/td>ADI<\/td>Fixed 5V output version<\/td><\/tr>
        LT1761ES5-2.5#TRPBF<\/td>ADI<\/td>Fixed 2.5V output version<\/td><\/tr>
        TPS7A4700RGWR<\/td>TI<\/td>150mA, 3.8uVRms noise, VQFN<\/td><\/tr>
        ADM7150ARDZ<\/td>ADI<\/td>800mA, 1uVRms noise, SOIC-8<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7038","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=7038"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7038\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=7038"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=7038"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=7038"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=7038"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}