{"id":3570,"date":"2026-06-06T10:40:53","date_gmt":"2026-06-06T10:40:53","guid":{"rendered":"https:\/\/materialparts.com\/tps73701drbt\/"},"modified":"2026-06-06T10:40:53","modified_gmt":"2026-06-06T10:40:53","slug":"tps73701drbt","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/tps73701drbt\/","title":{"rendered":"TPS73701DRBT"},"content":{"rendered":"

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

The TPS73701DRBT from Texas Instruments is a 1A low-dropout (LDO) linear regulator with reverse current protection and adjustable output (1.2V to 5.5V). Using an NMOS pass element, it achieves 130 mV typical dropout at 1A and is stable with only 1 uF ceramic output capacitor. The DRBT suffix denotes the 8-pin VSON (3x3mm) package in tape-and-reel.<\/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\n
\u0627\u0644\u0646\u0648\u0639<\/td>\n1A LDO Linear Regulator (Adjustable)<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\n1 A<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\n2.2V – 5.5V<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u062e\u0631\u062c<\/td>\n1.2V – 5.5V (adjustable via FB)<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u062a\u0633\u0631\u0628<\/td>\n130 mV (typical at 1A)<\/td>\n<\/tr>\n
Accuracy<\/td>\n1% initial, 3% over line\/load\/temp<\/td>\n<\/tr>\n
PSRRR<\/td>\n33 dB @ 100 kHz<\/td>\n<\/tr>\n
\u0636\u0648\u0636\u0627\u0621 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\n48 uVrms (10 Hz – 100 kHz)<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u062a\u0647\u062f\u0626\u0629<\/td>\n400 uA (typical)<\/td>\n<\/tr>\n
Shutdown IQ<\/td>\n< 20 nA (typical)<\/td>\n<\/tr>\n
Stability<\/td>\n1 uF ceramic output capacitor<\/td>\n<\/tr>\n
Protection<\/td>\nReverse current, thermal shutdown, foldback current limit<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nVSON-8 (DRB, 3 x 3 mm)<\/td>\n<\/tr>\n
Operating Temp<\/td>\n-40 to 125 C<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • NMOS topology for low reverse leakage current<\/li>\n
  • Ultra-low 130 mV dropout at 1A<\/li>\n
  • Stable with only 1 uF ceramic output capacitor<\/li>\n
  • Adjustable output from 1.2V to 5.5V via FB resistor divider<\/li>\n
  • Reverse current protection prevents back-driving<\/li>\n
  • < 20 nA shutdown current for battery-powered applications<\/li>\n
  • 1% initial output voltage accuracy<\/li>\n
  • Thermal shutdown and foldback current limit protection<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Portable electronics: Ultra-low IQ shutdown for battery life<\/li>\n
    • Post-regulation for switching supplies: 33 dB PSRR<\/li>\n
    • FPGA and DSP core power: Adjustable 1.2V-1.8V<\/li>\n
    • USB-powered devices: 5V to 3.3V regulation<\/li>\n
    • Industrial sensors: Wide -40 to 125 C operation<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The TPS73701DRBT from Texas Instruments is a 1A low-dropout (LDO) linear regulator with reverse current protection and adjustable output (1.2V to 5.5V). Using an NMOS pass element, it achieves 130 mV typical dropout at 1A and is stable with only 1 uF ceramic output capacitor. The DRBT suffix denotes the 8-pin VSON (3x3mm) […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,29],"tags":[],"chip_brand":[138],"class_list":["post-3570","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-power-management-ics-pmic","chip_brand-ti"],"acf":{"brief_explanation":"1A LDO regulator, adj 1.2-5.5V, 130mV dropout, rev current prot, VSON-8 3x3mm","date_code":"","package_case":"VSON-8 \/ DRB (3.00 x 3.00 x 0.88 mm)","in_stock":8533,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/tps73701.pdf","price":"$0.83 @ 1ku","product_introduction":"The TPS73701DRBT from Texas Instruments is a 1A low-dropout linear regulator with an NMOS pass element that provides reverse current protection and ultra-low dropout voltage. The adjustable output version supports 1.2V to 5.5V via an external resistor divider on the FB pin. The NMOS voltage-follower topology achieves 130 mV typical dropout at 1A and is inherently stable with just 1 uF ceramic output capacitor, independent of ESR. Reverse current protection prevents current flow from output to input when the input voltage drops below the output, eliminating the need for external blocking diodes. The device features 1% initial accuracy, < 20 nA shutdown current, and thermal shutdown with foldback current limiting.","working_principle":"The TPS73701DRBT uses an NMOS pass transistor in a voltage-follower (common-drain) configuration. Unlike PMOS LDOs, the NMOS topology does not require a gate drive voltage above VOUT, resulting in naturally low reverse leakage and excellent load transient response. The internal error amplifier compares the FB pin voltage to a 1.216V bandgap reference and drives the NMOS gate to maintain regulation. Reverse current protection uses a comparator that monitors the input-to-output differential; when VOUT exceeds VIN, the NMOS gate is driven off to block reverse current. The foldback current limit reduces the current limit during a fault, reducing power dissipation under short-circuit conditions. The EN pin controls an internal switch that disconnects the bias circuitry, achieving < 20 nA shutdown current.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>OUT<\/td>Power<\/td>Regulated output (connect to load)<\/td><\/tr>
      2<\/td>OUT<\/td>Power<\/td>Regulated output (connect to load)<\/td><\/tr>
      3<\/td>FB<\/td>Input<\/td>Feedback input (connect resistor divider)<\/td><\/tr>
      4<\/td>GND<\/td>Ground<\/td>Ground<\/td><\/tr>
      5<\/td>NC<\/td>-<\/td>No connect<\/td><\/tr>
      6<\/td>EN<\/td>Input<\/td>Enable (HIGH = on, LOW = shutdown)<\/td><\/tr>
      7<\/td>IN<\/td>Power<\/td>Unregulated input supply<\/td><\/tr>
      8<\/td>IN<\/td>Power<\/td>Unregulated input supply<\/td><\/tr><\/table>","application_scenarios":"
      • Battery devices: < 20 nA shutdown current maximizes battery life in always-on systems<\/li>
      • FPGA\/DSP core: Adjustable 1.2V\/1.5V\/1.8V from 3.3V rail with low dropout<\/li>
      • Post-regulation: 33 dB PSRR cleans switching supply ripple for sensitive analog<\/li>
      • USB peripherals: 5V to 3.3V\/1.8V regulation with reverse current protection<\/li>
      • Industrial sensors: -40 to 125 C operation with thermal and current protection<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>TPS73733DRBT<\/td>VSON-8<\/td>Fixed 3.3V version, same topology<\/td><\/tr>
        TI<\/td>TPS7A3701DRBR<\/td>VSON-8<\/td>1% total accuracy, improved performance<\/td><\/tr>
        ADI<\/td>LT1764AEQ-1.8<\/td>DD-Pak-5<\/td>3A LDO, adjustable, low noise<\/td><\/tr>
        TI<\/td>TLV75501PDBVR<\/td>SOT-23-5<\/td>500mA LDO, adjustable, ultra-small<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/3570","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=3570"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/3570\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=3570"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=3570"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=3570"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=3570"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}