{"id":7211,"date":"2026-06-23T07:27:29","date_gmt":"2026-06-23T07:27:29","guid":{"rendered":"https:\/\/materialparts.com\/tlv75533pdbvr\/"},"modified":"2026-06-23T07:27:29","modified_gmt":"2026-06-23T07:27:29","slug":"tlv75533pdbvr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/tlv75533pdbvr\/","title":{"rendered":"TLV75533PDBVR"},"content":{"rendered":"

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

The TLV75533PDBVR from Texas Instruments is a 500mA low-IQ low-dropout regulator with 3.3V fixed output in a SOT-23-5 package. With 46dB PSRR at 100kHz and 1uF minimum output capacitor, it provides clean power for noise-sensitive circuits.<\/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
\u062c\u0647\u062f \u0627\u0644\u062e\u0631\u062c<\/td>\n3.3 V (fixed)<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\n500 mA (max)<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\n1.45 V to 5.5 V<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u062a\u0633\u0631\u0628<\/td>\n200 mV (typ at 500mA)<\/td>\n<\/tr>\n
PSRRR<\/td>\n46 dB at 100kHz<\/td>\n<\/tr>\n
IQ<\/td>\n35 uA (typical)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40C to +125C<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • 3.3V fixed output at 500mA with 200mV typical dropout<\/li>\n
  • 46dB PSRR at 100kHz for noise-sensitive RF and analog circuits<\/li>\n
  • 35uA low quiescent current for battery-powered applications<\/li>\n
  • 1uF minimum ceramic output capacitor for stable operation<\/li>\n
  • Active discharge feature for controlled output capacitor discharge<\/li>\n
  • Enable pin with 10kHz toggle capability for power sequencing<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Post-regulation for switch-mode power supplies<\/li>\n
    • RF and wireless module power supply<\/li>\n
    • Battery-powered IoT sensor node regulation<\/li>\n
    • Portable electronics and wearable devices<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The TLV75533PDBVR from Texas Instruments is a 500mA low-IQ low-dropout regulator with 3.3V fixed output in a SOT-23-5 package. With 46dB PSRR at 100kHz and 1uF minimum output capacitor, it provides clean power for noise-sensitive circuits. Key Specifications Output Voltage 3.3 V (fixed) Output Current 500 mA (max) Input Voltage 1.45 V to […]<\/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":[13,29],"tags":[],"chip_brand":[138],"class_list":["post-7211","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-power-management-ics-pmic","chip_brand-ti"],"acf":{"brief_explanation":"500mA LDO, 3.3V fixed, 46dB PSRR, 35uA IQ, SOT-23-5, active discharge, 1uF Cmin","date_code":"","package_case":"SOT-23-5 (2.90 x 1.60 x 1.00 mm)","in_stock":10613,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/tlv755p.pdf","price":"$0.35 @ 1ku","product_introduction":"The TLV75533PDBVR from Texas Instruments is a 500mA, low-quiescent-current, low-dropout (LDO) linear regulator with a fixed 3.3V output in a SOT-23-5 package. The device features a 200mV typical dropout voltage at 500mA load, enabling efficient regulation from a 3.6V lithium cell or 3.3V rail with minimal headroom. The 46dB PSRR at 100kHz effectively rejects switching power supply ripple, making it ideal for post-regulation of DC-DC converters feeding noise-sensitive RF and analog circuits. The 35uA typical quiescent current minimizes battery drain in always-on applications. The LDO requires only a 1uF ceramic output capacitor for stability, simplifying PCB layout and reducing BOM cost. An active output discharge feature ensures controlled discharge of the output capacitor when the regulator is disabled, preventing residual voltage that could cause malfunction during power cycling. The enable pin supports toggling up to 10kHz for power sequencing or load switching applications. The device operates over the -40C to +125C junction temperature range and includes thermal shutdown and overcurrent protection.","working_principle":"The TLV75533PDBVR uses a PMOS pass transistor to regulate the output voltage. (1) Regulation: A voltage divider at the output (internal for fixed-voltage versions) provides feedback to the error amplifier. The error amplifier compares the feedback voltage to an internal 0.6V reference and drives the PMOS gate to maintain the output at 3.3V. When the output drops below 3.3V, the error amplifier increases the gate drive, reducing the PMOS on-resistance and increasing output current. (2) Dropout: The PMOS pass element requires only a small VGS to maintain regulation, resulting in the 200mV typical dropout voltage. Below the minimum input voltage (VOUT + VDO), the PMOS is fully enhanced and the output follows the input minus the IR drop. (3) PSRR: The high open-loop gain of the error amplifier provides 46dB of power supply rejection at 100kHz, attenuating input ripple before it reaches the output. At higher frequencies, the PSRR decreases as the loop gain rolls off. (4) Active Discharge: When the enable pin is driven low, an internal pull-down resistor (approximately 250 ohm) is connected across the output, discharging the output capacitor in a controlled manner. This prevents the output from floating at an indeterminate voltage.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>OUT<\/td>Output<\/td>Regulated 3.3V output<\/td><\/tr>
      2<\/td>GND<\/td>Ground<\/td>Ground<\/td><\/tr>
      3<\/td>EN<\/td>Input<\/td>Enable (active high)<\/td><\/tr>
      4<\/td>NC<\/td>-<\/td>Not connected<\/td><\/tr>
      5<\/td>IN<\/td>Power<\/td>Input supply (1.45-5.5V)<\/td><\/tr><\/table>","application_scenarios":"
      • Post-regulation for switch-mode power supplies with 46dB PSRR<\/li>
      • RF and wireless module 3.3V power supply at 500mA<\/li>
      • Battery-powered IoT sensor node regulation with 35uA IQ<\/li>
      • Portable electronics and wearable devices with 1uF capacitor<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>TLV74333PDBVR<\/td>SOT-23-5<\/td>Higher PSRR, 1A<\/td><\/tr>
        TI<\/td>TLV75518PDBVR<\/td>SOT-23-5<\/td>1.8V output version<\/td><\/tr>
        Microchip<\/td>MIC5219-3.3YM5-TR<\/td>SOT-23-5<\/td>500mA, 3.3V, similar<\/td><\/tr>
        Diodes Inc<\/td>AP2112K-3.3TRG1<\/td>SOT-23-5<\/td>600mA, 3.3V, low IQ<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7211","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=7211"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7211\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=7211"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=7211"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=7211"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=7211"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}