{"id":6448,"date":"2026-06-16T03:48:40","date_gmt":"2026-06-16T03:48:40","guid":{"rendered":"https:\/\/materialparts.com\/tps62177rgtr\/"},"modified":"2026-06-16T03:48:40","modified_gmt":"2026-06-16T03:48:40","slug":"tps62177rgtr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/tps62177rgtr\/","title":{"rendered":"TPS62177RGTR"},"content":{"rendered":"

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

The TPS62177RGTR is a 28V, 0.5A synchronous step-down DC\/DC converter from Texas Instruments featuring DCS-Control topology and a unique Sleep mode with 4.8\u00b5A quiescent current. With a 4.75V to 28V input range, 3.3V fixed output, and 1MHz switching frequency, it is ideal for 12V and 24V bus-powered systems requiring ultra-low standby power. The 2x3mm 10-pin WSON package minimizes board area.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u62d3\u6251\u7ed3\u6784<\/td>\nSynchronous Buck (DCS-Control)<\/td>\n<\/tr>\n
\u8f93\u5165\u7535\u538b<\/td>\n4.75V to 28V<\/td>\n<\/tr>\n
Output Voltage<\/td>\n3.3V fixed<\/td>\n<\/tr>\n
\u8f93\u51fa\u7535\u6d41<\/td>\n500mA<\/td>\n<\/tr>\n
\u5f00\u5173\u9891\u7387<\/td>\n1MHz (typical)<\/td>\n<\/tr>\n
Quiescent Current (Normal)<\/td>\n22\u00b5A<\/td>\n<\/tr>\n
Quiescent Current (Sleep)<\/td>\n4.8\u00b5A<\/td>\n<\/tr>\n
\u5173\u673a\u7535\u6d41<\/td>\n<2\u00b5A<\/td>\n<\/tr>\n
Efficiency<\/td>\nUp to 95%<\/td>\n<\/tr>\n
Output Voltage Accuracy<\/td>\n\u00b11.6% to \u00b12.9%<\/td>\n<\/tr>\n
Duty Cycle<\/td>\nUp to 100%<\/td>\n<\/tr>\n
Power Good Output<\/td>\nYes<\/td>\n<\/tr>\n
Active Output Discharge<\/td>\nYes<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\n10-pin WSON (2 x 3mm)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40\u00b0C to +85\u00b0C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • DCS-Control topology for seamless PWM\/power-save transitions<\/li>\n
  • 4.75V to 28V wide input voltage range<\/li>\n
  • Ultra-low 4.8\u00b5A Sleep mode quiescent current<\/li>\n
  • 100% duty cycle mode for lowest dropout<\/li>\n
  • Active output discharge for clean shutdown<\/li>\n
  • Power Good output for power sequencing<\/li>\n
  • Seamless power save mode transition<\/li>\n
  • Adjustable UVLO with hysteresis<\/li>\n
  • Short circuit and overtemperature protection<\/li>\n
  • 2mm x 3mm 10-pin WSON package<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • 12V\/24V point-of-load power supplies<\/li>\n
    • Ultra-mobile PC and embedded systems<\/li>\n
    • Low-power microcontroller power rails<\/li>\n
    • Industrial sensor and meter power<\/li>\n
    • Battery-powered always-on systems<\/li>\n
    • Efficient LDO replacement<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The TPS62177RGTR is a 28V, 0.5A synchronous step-down DC\/DC converter from Texas Instruments featuring DCS-Control topology and a unique Sleep mode with 4.8\u00b5A quiescent current. With a 4.75V to 28V input range, 3.3V fixed output, and 1MHz switching frequency, it is ideal for 12V and 24V bus-powered systems requiring ultra-low standby power. The […]<\/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":[31,13],"tags":[],"chip_brand":[138],"class_list":["post-6448","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"28V 0.5A sync buck, 3.3V fixed, DCS-Control, 4.8\u00b5A Sleep IQ, 1MHz, 100% duty, 2x3mm WSON-10","date_code":"","package_case":"10-pin WSON (2.0 x 3.0 x 0.8mm)","in_stock":8900,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/tps62177.pdf","price":"$0.72 @ 1ku","product_introduction":"The TPS62177RGTR is a high-efficiency synchronous step-down DC\/DC converter from Texas Instruments, featuring TI's proprietary DCS-Control topology for fast transient response and seamless mode transitions. The device accepts 4.75V to 28V input and provides a fixed 3.3V output at up to 500mA. Its standout feature is the Sleep mode, which reduces quiescent current to just 4.8\u00b5A \u2014 up to 20% efficiency improvement at very light loads compared to normal mode. The 100% duty cycle capability allows operation with minimal input-to-output voltage difference. The power good output enables power sequencing, while active output discharge ensures a clean shutdown. Housed in a tiny 2x3mm WSON-10 package, it is ideal for space-constrained, always-on industrial and portable applications.","working_principle":"The TPS62177 uses DCS-Control (Direct Control with Seamless transition), a proprietary control topology combining voltage-mode and current-mode regulation. In PWM mode, the device operates at a fixed ~1MHz frequency with synchronous rectification for high efficiency. When the load drops below the power-save threshold, the device seamlessly transitions to PFM (pulse-frequency modulation) mode, skipping pulses to maintain regulation with minimal switching losses. In Sleep mode, the device further reduces quiescent current to 4.8\u00b5A by partially disabling internal circuitry while maintaining output regulation. The SNOOZE pin selects between normal and sleep modes. The 100% duty cycle mode keeps the high-side MOSFET on continuously when the input voltage approaches the output voltage, functioning like a low-dropout switch. The power good comparator monitors the FB voltage and de-asserts PG when output drops below 95% of the target.","pin_description":"
      Pin<\/th>Name<\/th>Description<\/th><\/tr>
      1<\/td>EN<\/td>Enable input (active high, internal pull-up)<\/td><\/tr>
      2<\/td>VIN<\/td>Input supply (4.75V to 28V)<\/td><\/tr>
      3<\/td>VIN<\/td>Input supply (connect to pin 2)<\/td><\/tr>
      4<\/td>SW<\/td>Switch node (connect to inductor)<\/td><\/tr>
      5<\/td>PGND<\/td>Power ground<\/td><\/tr>
      6<\/td>PGND<\/td>Power ground<\/td><\/tr>
      7<\/td>FB<\/td>Feedback input (connect to VOS or resistor divider)<\/td><\/tr>
      8<\/td>PG<\/td>Power good output (open drain)<\/td><\/tr>
      9<\/td>SLEEP<\/td>Sleep mode enable (active high = sleep mode)<\/td><\/tr>
      10<\/td>VOS<\/td>Output sense (connect to output for fixed Vout)<\/td><\/tr>
      Pad<\/td>AGND<\/td>Analog ground (exposed thermal pad)<\/td><\/tr><\/table>","application_scenarios":"
      • Low-Power MCU Rail from 12V:<\/b> Power a Cortex-M4 microcontroller's 3.3V rail from a 12V bus. The 4.8\u00b5A Sleep mode IQ extends battery life in duty-cycled applications where the MCU sleeps 99% of the time. When the MCU enters deep sleep, assert the SLEEP pin to reduce converter IQ from 22\u00b5A to 4.8\u00b5A, achieving up to 20% efficiency improvement at sub-100\u00b5A loads.<\/li>
      • Industrial Sensor Always-On Supply:<\/b> Provide a 3.3V rail for a wireless sensor node powered from a 24V industrial bus. The 28V maximum input accommodates the 24V \u00b120% tolerance. The 100% duty cycle mode maintains output regulation when the bus voltage drops near 3.3V during brown-out conditions. The PG output resets the sensor when voltage recovers.<\/li>
      • LDO Replacement:<\/b> Replace a 12V-to-3.3V LDO that wastes 8.7V \u00d7 load current as heat. At 300mA, the TPS62177 delivers ~90% efficiency versus the LDO's 27%, reducing dissipation from 2.6W to ~0.12W and eliminating the need for a heatsink. The 2x3mm WSON footprint is comparable to many SOT-223 LDOs.<\/li><\/ul>","alternative_models":"
        Model<\/th>Vin Max<\/th>Iout<\/th>IQ Sleep<\/th>Key Difference<\/th><\/tr>
        TPS62175DQCR<\/td>28V<\/td>500mA<\/td>4.8\u00b5A<\/td>Adjustable output version<\/td><\/tr>
        TPS62080<\/td>6V<\/td>1.2A<\/td>18\u00b5A<\/td>Lower Vin, higher Iout, no sleep<\/td><\/tr>
        LMR16006<\/td>60V<\/td>600mA<\/td>25\u00b5A<\/td>TI, higher Vin, non-sync<\/td><\/tr>
        MAX17503<\/td>60V<\/td>500mA<\/td>3.4\u00b5A<\/td>ADI\/Maxim, higher Vin, lower IQ<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6448","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=6448"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6448\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=6448"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=6448"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=6448"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=6448"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}