{"id":7840,"date":"2026-06-28T02:42:10","date_gmt":"2026-06-28T02:42:10","guid":{"rendered":"https:\/\/materialparts.com\/tps77633dr\/"},"modified":"2026-06-28T10:20:23","modified_gmt":"2026-06-28T10:20:23","slug":"tps77633dr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/tps77633dr\/","title":{"rendered":"TPS77633DR"},"content":{"rendered":"

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

The TPS77633DR is a fast-transient-response, 500mA low-dropout linear regulator from Texas Instruments with fixed 3.3V output, 169mV dropout, power-good output, and enable function in an 8-pin SOIC package.<\/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\n\n
\u062c\u0647\u062f \u0627\u0644\u062e\u0631\u062c<\/td>\n3.3V fixed (\u00b12% accuracy)<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u062f \u0627\u0644\u0623\u0642\u0635\u0649 \u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0625\u062e\u0631\u0627\u062c \u0627\u0644\u0623\u0642\u0635\u0649<\/td>\n500 mA<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u062a\u0633\u0631\u0628<\/td>\n169 mV typical at 500mA<\/td>\n<\/tr>\n
\u0646\u0637\u0627\u0642 \u062c\u0647\u062f \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\n2.7V to 10V<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u062a\u0647\u062f\u0626\u0629<\/td>\n85 \u00b5A typical (independent of load)<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0625\u064a\u0642\u0627\u0641 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n1 \u00b5A at 25\u00b0C<\/td>\n<\/tr>\n
PSRRR<\/td>\n60dB at 100Hz<\/td>\n<\/tr>\n
\u0636\u0648\u0636\u0627\u0621 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\n53 \u00b5Vrms<\/td>\n<\/tr>\n
Load Regulation<\/td>\n3 mV typical<\/td>\n<\/tr>\n
Line Regulation<\/td>\n0.01%\/V typical<\/td>\n<\/tr>\n
Control Features<\/td>\nEnable, Power Good<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629 \u0625\u0644\u0649 +125 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSOIC-8 (4.9 x 3.9mm)<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • PMOS pass element for low dropout and low quiescent current<\/li>\n
  • 85\u00b5A quiescent current independent of output load<\/li>\n
  • Fast transient response for demanding digital loads<\/li>\n
  • Active-high power-good output for supply monitoring<\/li>\n
  • Enable pin with TTL-compatible shutdown control<\/li>\n
  • Thermal shutdown and overcurrent protection<\/li>\n
  • Stable with 10\u00b5F low-ESR output capacitor<\/li>\n
  • 2% output voltage tolerance over line, load, and temperature<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • DSP and FPGA core power<\/li>\n
    • \u0623\u062c\u0647\u0632\u0629 \u0645\u062d\u0645\u0648\u0644\u0629 \u062a\u0639\u0645\u0644 \u0628\u0627\u0644\u0628\u0637\u0627\u0631\u064a\u0629<\/li>\n
    • USB-powered peripherals<\/li>\n
    • Post-regulation for switching supplies<\/li>\n
    • Power management for telecom<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The TPS77633DR is a fast-transient-response, 500mA low-dropout linear regulator from Texas Instruments with fixed 3.3V output, 169mV dropout, power-good output, and enable function in an 8-pin SOIC package. Key Specifications Output Voltage 3.3V fixed (\u00b12% accuracy) Maximum Output Current 500 mA Dropout Voltage 169 mV typical at 500mA Input Voltage Range 2.7V 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":[13,32],"tags":[],"chip_brand":[138],"class_list":["post-7840","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-low-dropout-regulators-ldo","chip_brand-ti"],"acf":{"brief_explanation":"500mA LDO, 3.3V fixed, 169mV dropout, PG output, enable, SOIC-8","date_code":"","package_case":"SOIC-8 (4.9 x 3.9 x 1.5mm, 1.27mm pitch)","in_stock":9130,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/tps77633.pdf","price":"$0.71 @ 1ku","product_introduction":"The TPS77633DR is a 500mA low-dropout linear regulator from Texas Instruments with a fixed 3.3V output. Using a PMOS pass element, the device achieves 169mV typical dropout voltage at 500mA while maintaining an ultralow 85\u00b5A quiescent current that is independent of load current. The fast transient response makes it suitable for powering digital ICs with rapidly varying current demands. An active-high power-good (PG) output indicates when the output voltage is within regulation, enabling power sequencing and reset generation. The enable (EN) pin provides shutdown control, reducing quiescent current to 1\u00b5A. The device is stable with a 10\u00b5F low-ESR output capacitor and features thermal shutdown and overcurrent protection.","working_principle":"The TPS77633DR uses a PMOS transistor as the pass element, which behaves as a voltage-driven device. Unlike PNP-based LDOs where the base current is proportional to load current (IB = IC\/\u03b2), the PMOS gate draws negligible DC current, resulting in the 85\u00b5A quiescent current that remains constant across the entire 0-500mA output range. The dropout voltage is determined by the RDS(ON) of the PMOS transistor: VDO = IOUT \u00d7 RDS(ON) = 169mV at 500mA. The error amplifier compares a fraction of the output voltage (via the internal resistor divider for fixed-output versions) with a precision bandgap reference, and drives the PMOS gate to maintain regulation. The fast transient response results from the high bandwidth of the error amplifier and the low gate capacitance of the PMOS. The power-good comparator monitors the output voltage and drives the PG pin (open drain, active high) high when VOUT exceeds approximately 90% of the nominal value. In dropout mode, the PMOS gate is driven fully on (100% duty cycle), and unlike PNP LDOs, the quiescent current does not increase, preventing battery drain when the input voltage drops below the regulation threshold.","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Description<\/th><\/tr>\n
      1<\/td>EN<\/td>Input<\/td>Enable (TTL high = shutdown, low = normal)<\/td><\/tr>\n
      2<\/td>IN<\/td>Power<\/td>Input supply (2.7V-10V)<\/td><\/tr>\n
      3<\/td>IN<\/td>Power<\/td>Input supply (2.7V-10V)<\/td><\/tr>\n
      4<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>\n
      5<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>\n
      6<\/td>OUT<\/td>Power<\/td>3.3V regulated output<\/td><\/tr>\n
      7<\/td>OUT<\/td>Power<\/td>3.3V regulated output<\/td><\/tr>\n
      8<\/td>PG<\/td>Output<\/td>Power good (open drain, active high)<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • DSP\/FPGA Power:<\/strong> Fast transient response maintains regulation during rapid load steps from digital core switching<\/li>\n
      • Battery Devices:<\/strong> 85\u00b5A Iq independent of load extends battery life; 1\u00b5A shutdown current in sleep mode<\/li>\n
      • USB Peripherals:<\/strong> 169mV dropout at 500mA allows 5V USB input to produce stable 3.3V output<\/li>\n
      • Post-Regulation:<\/strong> 60dB PSRR at 100Hz cleans switching supply ripple for noise-sensitive analog circuits<\/li>\n
      • Power Sequencing:<\/strong> PG output enables downstream regulators or provides power-on reset to processors<\/li>\n<\/ul>","alternative_models":"\n
        Model<\/th>Manufacturer<\/th>Key Difference<\/th>Package<\/th>Specs<\/th><\/tr>\n
        TPS77601DR<\/td>TI<\/td>Adjustable version (1.2V-5.5V), same package<\/td>-<\/td>-<\/td><\/tr>\n
        TPS77618DR<\/td>TI<\/td>1.8V fixed output version<\/td>-<\/td>-<\/td><\/tr>\n
        TLV1117LV33DCYR<\/td>TI<\/td>1A LDO, 3.3V, SOT-223, lower cost<\/td>-<\/td>-<\/td><\/tr>\n
        AMS1117-3.3<\/td>Advanced Monolithic<\/td>1A LDO, 3.3V, SOT-223, very low cost<\/td>-<\/td>-<\/td><\/tr>\n
        MIC5219-3.3YM5-TR<\/td>Microchip<\/td>500mA LDO, 3.3V, SOT-23-5, PG output<\/td>-<\/td>-<\/td><\/tr>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7840","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=7840"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7840\/revisions"}],"predecessor-version":[{"id":8295,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7840\/revisions\/8295"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=7840"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=7840"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=7840"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=7840"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}