{"id":9602,"date":"2026-07-04T10:33:12","date_gmt":"2026-07-04T10:33:12","guid":{"rendered":"https:\/\/materialparts.com\/tps76701qdr\/"},"modified":"2026-07-04T10:33:12","modified_gmt":"2026-07-04T10:33:12","slug":"tps76701qdr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/tps76701qdr\/","title":{"rendered":"TPS76701QDR"},"content":{"rendered":"

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

The TPS76701QDR is a fast-transient-response 1-A low-dropout (LDO) linear regulator from Texas Instruments, available in an adjustable output version programmable from 1.5 V to 5.5 V via an external resistor divider. Housed in an 8-pin SOIC package, it features an ultra-low quiescent current of 85 \u00b5A typical and an open-drain RESET output with a 200-ms delay for power-on reset supervision, making it ideal for battery-powered and DSP\/FPGA core supply applications.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
\u8f93\u51fa\u7c7b\u578b<\/td>\nAdjustable (1.5 V to 5.5 V)<\/td>\n<\/tr>\n
Maximum Output Current<\/td>\n1 A<\/td>\n<\/tr>\n
\u8f93\u5165\u7535\u538b\u8303\u56f4<\/td>\n2.7 V to 10 V<\/td>\n<\/tr>\n
Dropout Voltage<\/td>\n230 mV typical @ 1 A<\/td>\n<\/tr>\n
\u9759\u6001\u7535\u6d41<\/td>\n85 \u00b5A typical<\/td>\n<\/tr>\n
Accuracy<\/td>\n\u00b12% over line, load, and temperature<\/td>\n<\/tr>\n
PSRR<\/td>\n60 dB @ 1 kHz<\/td>\n<\/tr>\n
Output Noise<\/td>\n55 \u00b5Vrms<\/td>\n<\/tr>\n
RESET Delay<\/td>\n200 ms typical<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40\u00b0C to 125\u00b0C<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\n8-SOIC<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Ultra-low 85 \u00b5A typical quiescent current independent of output load<\/li>\n
  • Fast transient response with 10 \u00b5F low-ESR output capacitor stability<\/li>\n
  • Open-drain power-on reset (RESET) output with 200-ms delay for microprocessor supervision<\/li>\n
  • Sleep mode: TTL high on EN pin reduces quiescent current to 1 \u00b5A<\/li>\n
  • Thermal shutdown protection and over-current limiting<\/li>\n
  • PMOS pass element enables very low dropout and ground-current independence from load<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Battery-powered DSP and microcontroller core supply rails<\/li>\n
    • Portable instrumentation and handheld devices requiring long battery life<\/li>\n
    • FPGA and CPLD I\/O and core voltage regulation<\/li>\n
    • Post-regulation for switch-mode power supplies<\/li>\n
    • Automotive and industrial systems needing RESET supervision<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The TPS76701QDR is a fast-transient-response 1-A low-dropout (LDO) linear regulator from Texas Instruments, available in an adjustable output version programmable from 1.5 V to 5.5 V via an external resistor divider. Housed in an 8-pin SOIC package, it features an ultra-low quiescent current of 85 \u00b5A typical and an open-drain RESET output with […]<\/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":[850],"chip_brand":[138],"class_list":["post-9602","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-low-dropout-regulators-ldo","tag-tps76701qdr","chip_brand-ti"],"acf":{"brief_explanation":"1A adjustable LDO with 230mV dropout, 85\u00b5A Iq, and 200-ms RESET delay in 8-SOIC","date_code":"","package_case":"8-SOIC (5.0 x 3.98 x 1.5 mm)","in_stock":11502,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/slvs208j\/slvs208j.pdf","price":"$3.27 @ 2500+","product_introduction":"The TPS76701QDR from Texas Instruments is a member of the TPS767xxQ family of fast-transient-response 1-A low-dropout linear regulators. The adjustable version allows the output voltage to be set from 1.5 V to 5.5 V using an external resistor divider, with a reference voltage of 1.1834 V typical. The device is built with a PMOS pass transistor that provides very low dropout voltage (230 mV typical at 1 A for the 5-V version) and maintains quiescent current at just 85 \u00b5A across the entire output current range, significantly extending battery life in portable applications. An integrated undervoltage comparator drives an open-drain RESET output with a 200-ms delay, enabling reliable microprocessor power-on reset supervision.","working_principle":"The TPS76701QDR operates through three functional blocks: (1) PMOS Pass Element \u2014 a P-channel MOSFET configured as a voltage-controlled resistor regulates the output, with dropout voltage directly proportional to output current since the PMOS behaves as a low-value resistor; (2) Error Amplifier and Feedback \u2014 the adjustable version uses an external resistor divider to set the output voltage, with the error amplifier comparing the divided output against an internal 1.1834 V bandgap reference and driving the PMOS gate to maintain regulation; (3) Supervisory Circuit \u2014 an internal comparator monitors the output voltage and asserts the open-drain RESET output low when the output drops below the threshold, releasing it after a 200-ms timeout once the output returns above the valid level. The enable (EN) pin can place the device into sleep mode, reducing quiescent current to 1 \u00b5A.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>GND<\/td>Ground reference<\/td><\/tr>
      2<\/td>EN<\/td>Enable input (active high; TTL high = sleep mode shutdown)<\/td><\/tr>
      3<\/td>IN<\/td>Input voltage supply<\/td><\/tr>
      4<\/td>IN<\/td>Input voltage supply<\/td><\/tr>
      5<\/td>OUT<\/td>Regulated output voltage<\/td><\/tr>
      6<\/td>OUT<\/td>Regulated output voltage<\/td><\/tr>
      7<\/td>FB<\/td>Feedback input for adjustable version (connect resistor divider)<\/td><\/tr>
      8<\/td>RESET<\/td>Open-drain power-on reset output (active low, 200-ms delay)<\/td><\/tr><\/table>","application_scenarios":"
      • Battery-powered DSP core supply providing 1.8 V at 1 A from a 3.3 V rail with RESET supervision<\/li>
      • Portable medical instrument requiring ultra-low quiescent current for extended battery life<\/li>
      • FPGA development board with adjustable core voltage (1.2 V to 3.3 V) and power-on reset<\/li>
      • Post-regulation of a 5 V switching converter to a clean 3.3 V rail with 60 dB PSRR<\/li>
      • Industrial control system with thermal shutdown protection and microprocessor watchdog reset<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        TPS76701QD<\/td>TI<\/td>Same device, cut-tape packaging<\/td><\/tr>
        TPS76801QDR<\/td>TI<\/td>Same family with Power-Good (PG) instead of RESET<\/td><\/tr>
        TPS76733QDR<\/td>TI<\/td>Fixed 3.3 V output version<\/td><\/tr>
        TLV1117-ADJ<\/td>TI<\/td>Lower cost 800 mA LDO, no RESET<\/td><\/tr>
        AMS1117-ADJ<\/td>Advanced Monolithic Systems<\/td>Budget alternative 1 A LDO without supervisor<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9602","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=9602"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9602\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=9602"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=9602"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=9602"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=9602"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}