{"id":3953,"date":"2026-06-09T01:51:29","date_gmt":"2026-06-09T01:51:29","guid":{"rendered":"https:\/\/materialparts.com\/tps3828-33qdbvrq1\/"},"modified":"2026-06-09T01:51:29","modified_gmt":"2026-06-09T01:51:29","slug":"tps3828-33qdbvrq1","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/tps3828-33qdbvrq1\/","title":{"rendered":"TPS3828-33QDBVRQ1"},"content":{"rendered":"

Productos<\/h2>\n

The TPS3828-33QDBVRQ1 from Texas Instruments is an automotive-qualified voltage monitor with watchdog timer in a SOT-23-5 package. It monitors a 3.3V supply with 2.93V threshold, provides 200ms reset delay, and features open-drain active-low RESET output with manual reset input.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
Threshold Voltage<\/td>\n2.93V (3.3V nominal)<\/td>\n<\/tr>\n
Supply Voltage Range<\/td>\n1.1V to 5.5V<\/td>\n<\/tr>\n
Supply Current<\/td>\n15uA typical<\/td>\n<\/tr>\n
Reset Output<\/td>\nActive-low, Open-drain<\/td>\n<\/tr>\n
Reset Delay<\/td>\n200ms<\/td>\n<\/tr>\n
Watchdog Timeout<\/td>\n1.6s<\/td>\n<\/tr>\n
Manual Reset<\/td>\nYes<\/td>\n<\/tr>\n
Threshold Accuracy<\/td>\n2.4%<\/td>\n<\/tr>\n
Rating<\/td>\nAEC-Q100 (Automotive)<\/td>\n<\/tr>\n
Paquete<\/td>\nSOT-23-5 (DBV)<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40 to +125C<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • AEC-Q100 qualified for automotive applications<\/li>\n
  • Watchdog timer with 1.6s timeout<\/li>\n
  • Manual reset input (MR)<\/li>\n
  • Open-drain RESET output<\/li>\n
  • 200ms power-on reset delay<\/li>\n
  • No external components required<\/li>\n
  • 15uA supply current<\/li>\n
  • ESD protection exceeds 2000V HBM<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Automotive DSP and MCU supervision<\/li>\n
    • Processor-based system reset control<\/li>\n
    • Industrial equipment power monitoring<\/li>\n
    • Battery-powered equipment supervision<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The TPS3828-33QDBVRQ1 from Texas Instruments is an automotive-qualified voltage monitor with watchdog timer in a SOT-23-5 package. It monitors a 3.3V supply with 2.93V threshold, provides 200ms reset delay, and features open-drain active-low RESET output with manual reset input. Key Specifications Threshold Voltage 2.93V (3.3V nominal) Supply Voltage Range 1.1V to 5.5V Supply […]<\/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-3953","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-power-management-ics-pmic","chip_brand-ti"],"acf":{"brief_explanation":"Automotive voltage monitor with watchdog, 2.93V threshold, open-drain, SOT-23-5","date_code":"","package_case":"SOT-23-5 (2.9 x 1.6 x 1.1 mm, DBV package)","in_stock":10980,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/tps3828-q1.pdf","price":"$0.35 @ 1ku","product_introduction":"The TPS3828-33QDBVRQ1 is an automotive-qualified member of the TPS382x-Q1 family of processor supervisory circuits from Texas Instruments. It monitors a 3.3V supply rail with a fixed threshold of 2.93V and 2.4% accuracy. The device integrates a watchdog timer with 1.6s timeout that requires periodic strobing via the WDI pin to prevent a reset assertion. A manual reset input (MR) allows external pushbutton reset generation. The open-drain active-low RESET output provides flexibility in system reset architectures. During power-up, the 200ms fixed delay ensures proper system initialization. With only 15uA supply current and AEC-Q100 Grade 1 qualification (-40C to 125C), it is ideal for automotive MCU\/DSP supervision.","working_principle":"The TPS3828-33QDBVRQ1 monitors VDD against an internal fixed threshold (2.93V). (1) Power-On Reset: When VDD exceeds 1.1V, RESET asserts low. RESET remains active until VDD rises above VIT- + VHYS and the 200ms timeout expires. (2) Undervoltage Detection: If VDD drops below VIT- (2.93V), RESET immediately asserts low. (3) Watchdog Timer: The 1.6s timer starts after power-on reset. A transition on WDI resets the timer. If WDI is not strobed within 1.6s, RESET asserts for 200ms, then the timer restarts. Leaving WDI floating disables the watchdog. (4) Manual Reset: Pulling MR low forces RESET active. (5) Open-Drain Output: An external pullup resistor is required on RESET.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>MR<\/td>Manual reset input (active low)<\/td><\/tr>
      2<\/td>GND<\/td>Ground<\/td><\/tr>
      3<\/td>RESET<\/td>Reset output (active low, open drain)<\/td><\/tr>
      4<\/td>WDI<\/td>Watchdog input (float to disable)<\/td><\/tr>
      5<\/td>VDD<\/td>Supply voltage (1.1-5.5V)<\/td><\/tr><\/table>","application_scenarios":"
      • Automotive MCU supervision: Monitors 3.3V MCU supply rail, watchdog ensures firmware execution integrity in body controllers and powertrain ECUs<\/li>
      • Industrial control: Power-on reset and brownout detection for PLCs and motor controllers operating in harsh environments<\/li>
      • Battery equipment: 15uA supply current minimizes battery drain in portable and remote monitoring systems<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>TPS3823-33QDBVRQ1<\/td>SOT-23-5<\/td>Active-low push-pull output version<\/td><\/tr>
        TI<\/td>TPS3820-33QDBVRQ1<\/td>SOT-23-5<\/td>25ms delay, no manual reset<\/td><\/tr>
        Microchip<\/td>MCP1316MT-29LE\/OT<\/td>SOT-23-5<\/td>2.9V threshold, open drain<\/td><\/tr>
        onsemi<\/td>NCP303LSN30T1<\/td>SOT-23-5<\/td>3.0V threshold, open drain<\/td><\/tr>
        TI<\/td>TPS3828-33DBVR<\/td>SOT-23-5<\/td>Non-automotic version, -40 to 85C<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/3953","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/comments?post=3953"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/3953\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=3953"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=3953"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=3953"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=3953"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}