{"id":6266,"date":"2026-06-12T10:29:44","date_gmt":"2026-06-12T10:29:44","guid":{"rendered":"https:\/\/materialparts.com\/mic5205-3-3ym5-tr\/"},"modified":"2026-06-12T10:29:44","modified_gmt":"2026-06-12T10:29:44","slug":"mic5205-3-3ym5-tr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/mic5205-3-3ym5-tr\/","title":{"rendered":"MIC5205-3.3YM5-TR"},"content":{"rendered":"

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

The MIC5205-3.3YM5-TR from Microchip Technology is a 3.3V fixed-output ultra-low-noise LDO regulator with 150mA output capability. It features very low dropout voltage of 165mV at 150mA and ultra-low noise of 30uVrms without external capacitor in SOT-23-5 package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
Output Voltage<\/td>\n3.3V (fixed)<\/td>\n<\/tr>\n
\u8f93\u51fa\u7535\u6d41<\/td>\n150 mA (max)<\/td>\n<\/tr>\n
\u8f93\u5165\u7535\u538b\u8303\u56f4<\/td>\n3.5V to 16V<\/td>\n<\/tr>\n
Dropout Voltage<\/td>\n165 mV at 150mA<\/td>\n<\/tr>\n
Output Noise<\/td>\n30 uVrms (10Hz-100kHz, CNR=0.01uF)<\/td>\n<\/tr>\n
PSRR<\/td>\n75 dB at 1kHz<\/td>\n<\/tr>\n
\u9759\u6001\u7535\u6d41<\/td>\n1.5 mA (ground current)<\/td>\n<\/tr>\n
\u5173\u673a\u7535\u6d41<\/td>\n0.01 uA (typical)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40 to 125 C<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nSOT-23-5<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Ultra-low output noise without bypass capacitor (30uVrms)<\/li>\n
  • Very low 165mV dropout at full 150mA load<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • RF and wireless module power supplies<\/li>\n
    • Audio and video circuit regulation<\/li>\n
    • Battery-powered noise-sensitive devices<\/li>\n
    • PLL and VCO clean power<\/li>\n
    • Portable instrumentation<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The MIC5205-3.3YM5-TR from Microchip Technology is a 3.3V fixed-output ultra-low-noise LDO regulator with 150mA output capability. It features very low dropout voltage of 165mV at 150mA and ultra-low noise of 30uVrms without external capacitor in SOT-23-5 package. Key Specifications Output Voltage 3.3V (fixed) Output Current 150 mA (max) Input Voltage Range 3.5V to […]<\/p>\n","protected":false},"author":2,"featured_media":6388,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,32],"tags":[],"chip_brand":[134],"class_list":["post-6266","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-integrated-circuits-ics","category-low-dropout-regulators-ldo","chip_brand-microchip"],"acf":{"brief_explanation":"3.3V 150mA ultra-low-noise LDO, 165mV dropout, 30uVrms noise, SOT-23-5","date_code":"","package_case":"SOT-23-5 (2.9 x 1.6 x 1.1mm)","in_stock":9858,"datasheet":"https:\/\/ww1.microchip.com\/downloads\/en\/DeviceDoc\/MIC5205-3.3YM5-TR.pdf","price":"$0.54 @ 1ku","product_introduction":"The MIC5205-3.3YM5-TR from Microchip Technology is an ultra-low-noise, low-dropout linear regulator optimized for noise-sensitive applications. Providing a fixed 3.3V output at up to 150mA, it achieves only 30uVrms output noise with a noise reduction bypass capacitor, making it ideal for RF, audio, and precision analog circuits. The 165mV dropout voltage at full load enables efficient operation from 3.5V input. A logic-controlled enable pin allows shutdown to 0.01uA for power management in battery-operated systems.","working_principle":"The MIC5205-3.3YM5-TR operates as a PNP-based LDO linear regulator optimized for low noise. **Pass Element**: A PNP pass transistor enables low dropout operation (165mV at 150mA), significantly lower than NPN-based LDOs. The dropout voltage scales with output current. **Noise Reduction**: A noise reduction (NR) pin connects to an internal voltage reference through a high-value resistor. Adding an external capacitor (0.01uF) from NR to GND filters reference noise, dramatically reducing output noise to 30uVrms. This is the primary noise reduction mechanism unique to the MIC5205 family. **Error Amplifier**: A high-gain error amplifier compares the output voltage against the filtered reference. The amplifier bandwidth and compensation are designed for stability with ceramic output capacitors as small as 1uF. **Enable Control**: The EN pin provides logic-controlled shutdown. When EN is low, the output is disabled and ground current drops to 0.01uA, making it suitable for power gating in battery systems. **Protection**: Current limiting protects against overload. Thermal shutdown disables the output when junction temperature exceeds approximately 160C.","pin_description":"
      Pin<\/th>Name<\/th>Description<\/th><\/tr>
      1<\/td>IN<\/td>Input supply voltage (3.5V to 16V)<\/td><\/tr>
      2<\/td>GND<\/td>Ground<\/td><\/tr>
      3<\/td>EN<\/td>Enable input (high=on, low=shutdown)<\/td><\/tr>
      4<\/td>NR\/BYP<\/td>Noise reduction bypass (connect 0.01uF cap to GND)<\/td><\/tr>
      5<\/td>OUT<\/td>Regulated 3.3V output<\/td><\/tr><\/table>","application_scenarios":"
      • RF Power: Clean 3.3V supply for WiFi\/BLE transceivers and low-noise amplifiers<\/li>
      • Audio Circuits: Ultra-low-noise power for ADCs, DACs, and headphone amplifiers<\/li>
      • PLL\/VCO: Noise-free supply for frequency synthesizers and voltage-controlled oscillators<\/li>
      • Portable Devices: Battery-efficient 3.3V rail with enable control for power sequencing<\/li>
      • Sensor Power: Low-noise supply for precision analog sensors and instrumentation amplifiers<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        MIC5205-5.0YM5-TR<\/td>Microchip<\/td>5.0V fixed output version<\/td><\/tr>
        TLV70033DDCR<\/td>TI<\/td>3.3V, 200mA, 50uA Iq, SOT-23-5<\/td><\/tr>
        AP2112K-3.3<\/td>Diodes Inc<\/td>3.3V, 600mA, 250mV dropout, SOT-23-5<\/td><\/tr>
        LT1761ES5-3.3#TRMPBF<\/td>ADI<\/td>3.3V, 100mA, 20uVrms noise, SOT-23-5<\/td><\/tr>
        TC1185-3.3VCT713<\/td>Microchip<\/td>3.3V, 150mA, SOT-23-5, similar family<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6266","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=6266"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6266\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media\/6388"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=6266"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=6266"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=6266"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=6266"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}