{"id":6750,"date":"2026-06-21T10:21:18","date_gmt":"2026-06-21T10:21:18","guid":{"rendered":"https:\/\/materialparts.com\/tps72012drvr\/"},"modified":"2026-06-21T10:21:18","modified_gmt":"2026-06-21T10:21:18","slug":"tps72012drvr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/tps72012drvr\/","title":{"rendered":"TPS72012DRVR"},"content":{"rendered":"

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

The TPS72012DRVR from Texas Instruments is a 350 mA ultra-low VIN RF low-dropout linear regulator with a bias pin. It features 1.2 V fixed output, 38 \u00b5A quiescent current, 80 dB PSRR, and 110 mV dropout at full load in a tiny 6-pin WSON package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u7c7b\u578b<\/td>\nLow-Dropout Linear Regulator (LDO)<\/td>\n<\/tr>\n
Output Voltage<\/td>\n1.2 V (Fixed)<\/td>\n<\/tr>\n
\u8f93\u51fa\u7535\u6d41<\/td>\n350 mA<\/td>\n<\/tr>\n
Input Voltage (VIN)<\/td>\n1.1 V to 4.5 V<\/td>\n<\/tr>\n
Bias Voltage (VBIAS)<\/td>\n1.4 V above VOUT min<\/td>\n<\/tr>\n
Dropout Voltage<\/td>\n110 mV @ 350 mA<\/td>\n<\/tr>\n
\u9759\u6001\u7535\u6d41<\/td>\n38 \u00b5A<\/td>\n<\/tr>\n
PSRR (VIN)<\/td>\n80 dB (10 Hz to 10 kHz)<\/td>\n<\/tr>\n
Output Noise<\/td>\n48 \u00b5VRMS (10 Hz to 100 kHz)<\/td>\n<\/tr>\n
Soft Start<\/td>\nBuilt-in, 140 \u00b5s start-up<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nWSON-6 (2 x 2 mm)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40\u00b0C to 125\u00b0C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • 350 mA output current with ultra-low VIN (1.1 V min)<\/li>\n
  • Dual-rail architecture: VIN for power path, VBIAS for control<\/li>\n
  • 38 \u00b5A low quiescent current<\/li>\n
  • 80 dB PSRR for noise-sensitive RF applications<\/li>\n
  • Built-in soft start with monotonic VOUT rise<\/li>\n
  • Regulates under light loads when IN pin is floating<\/li>\n
  • Overcurrent and thermal protection<\/li>\n
  • Stable with 2.2 \u00b5F ceramic output capacitor<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • RF and wireless connectivity power supplies<\/li>\n
    • Post-regulation from DC-DC converters<\/li>\n
    • Portable and battery-powered devices<\/li>\n
    • Digital cameras and camera phones<\/li>\n
    • Handheld instruments<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The TPS72012DRVR from Texas Instruments is a 350 mA ultra-low VIN RF low-dropout linear regulator with a bias pin. It features 1.2 V fixed output, 38 \u00b5A quiescent current, 80 dB PSRR, and 110 mV dropout at full load in a tiny 6-pin WSON package. Key Specifications Type Low-Dropout Linear Regulator (LDO) 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":[138],"class_list":["post-6750","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-low-dropout-regulators-ldo","chip_brand-ti"],"acf":{"brief_explanation":"350mA LDO, 1.2V Fixed, 110mV VDO, 80dB PSRR, 38uA IQ, WSON-6","date_code":"","package_case":"WSON-6 (2 x 2 x 0.75 mm, exposed pad)","in_stock":11234,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/tps720.pdf","price":"$0.52 @ 1ku","product_introduction":"The TPS72012DRVR from Texas Instruments is a 350 mA dual-rail low-dropout linear regulator with a fixed 1.2 V output. The dual-rail architecture separates the power input (VIN) from the bias supply (VBIAS), allowing VIN to operate as low as VOUT + VDO (1.1 V minimum) while VBIAS powers the control circuitry. This configuration maximizes efficiency in systems where VIN comes from a high-efficiency DC-DC converter. The device delivers 80 dB PSRR and 48 \u00b5VRMS output noise, making it ideal for RF and noise-sensitive applications. Built-in soft start ensures monotonic output rise with inrush current limited to 100 mA plus load current. The unique light-load regulation feature maintains output even when the IN pin is floating, sourcing current from VBIAS.","working_principle":"The TPS72012DRVR uses a dual-rail LDO architecture where VIN carries the main load current and VBIAS powers the internal control circuitry (error amplifier, bandgap reference, protection circuits). The error amplifier compares the feedback voltage from the internal resistor divider against the bandgap reference (0.5 V) and drives the pass transistor to regulate the output at 1.2 V. The P-channel MOSFET pass element allows low dropout operation. The bias rail enables the control circuit to function even when VIN is very close to VOUT. The integrated soft-start circuit limits inrush current during power-up. Overcurrent protection limits the pass transistor gate drive when output current exceeds the safe threshold. Thermal shutdown disables the output when junction temperature exceeds 160\u00b0C. The enable pin allows the device to be shut down, reducing current to less than 1 \u00b5A.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>IN<\/td>Power<\/td>Input supply voltage (1.1-4.5V)<\/td><\/tr>
      2<\/td>GND<\/td>Ground<\/td>Ground<\/td><\/tr>
      3<\/td>EN<\/td>Input<\/td>Enable (active high)<\/td><\/tr>
      4<\/td>BIAS<\/td>Power<\/td>Bias supply voltage<\/td><\/tr>
      5<\/td>OUT<\/td>Output<\/td>Regulated 1.2V output<\/td><\/tr>
      6<\/td>PG<\/td>Output<\/td>Power good (open drain)<\/td><\/tr>
      Pad<\/td>GND<\/td>Ground<\/td>Exposed thermal pad<\/td><\/tr><\/table>","application_scenarios":"
      • RF power amplifier and transceiver supply regulation<\/li>
      • Post-DC-DC LDO for noise-sensitive analog\/RF circuits<\/li>
      • Portable devices requiring ultra-low standby current<\/li>
      • Camera module and image sensor power supplies<\/li>
      • Bluetooth\/Wi-Fi module clean power rails<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Texas Instruments<\/td>TPS72018DRVR<\/td>WSON-6<\/td>1.8V output variant<\/td><\/tr>
        Texas Instruments<\/td>TPS73633DBVR<\/td>SOT-23-5<\/td>3.3V, 400mA, low noise<\/td><\/tr>
        Analog Devices<\/td>LT3008ETS8-1.2#TRPBF<\/td>TSOT-23-8<\/td>1.2V, 300mA, 3\u00b5A IQ<\/td><\/tr>
        Microchip<\/td>MCP1824T-1202E\/OT<\/td>SOT-23-5<\/td>1.2V, 300mA LDO<\/td><\/tr>
        onsemi<\/td>NCP511SN120T1G<\/td>TSOP-5<\/td>1.2V, 150mA, low noise<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6750","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=6750"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6750\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=6750"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=6750"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=6750"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=6750"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}