Inicio Gestión de la energía Supervisor & reset ICs

TPS3840

ACTIVO

Supervisor de tensión de entrada alta de nanopotencia con reinicio manual y retardo de tiempo de rei

alarmNotificaciones Haga su pedido ahora

Detalles del producto

Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 1.6, 1.7, 1.8, 1.9, 2, 2.1, 2.2, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3, 3.1, 3.3, 3.4, 3.5, 3.6, 4, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.8, 4.9 Features Manual reset capable, Reset time delay, Undervoltage, Undervoltage monitor only, Wide input voltage Reset threshold accuracy (%) 1.5 Iq (typ) (mA) 0.0003 Output driver type/reset output Active-high, Active-low, Open-drain, Push-Pull Time delay (ms) 0, 0.05 Supply voltage (min) (V) 1.5 Supply voltage (max) (V) 10 Rating Catalog Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 125
Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 1.6, 1.7, 1.8, 1.9, 2, 2.1, 2.2, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3, 3.1, 3.3, 3.4, 3.5, 3.6, 4, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.8, 4.9 Features Manual reset capable, Reset time delay, Undervoltage, Undervoltage monitor only, Wide input voltage Reset threshold accuracy (%) 1.5 Iq (typ) (mA) 0.0003 Output driver type/reset output Active-high, Active-low, Open-drain, Push-Pull Time delay (ms) 0, 0.05 Supply voltage (min) (V) 1.5 Supply voltage (max) (V) 10 Rating Catalog Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 125
SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8
  • Wide operating voltage: 1.5 V to 10 V
  • Nano supply current: 300 nA (Typ), 700 nA (Max)
  • Fixed threshold voltage (VIT-)
    • Threshold from 1.6 V to 4.9 V in 0.1-V steps
    • High accuracy: 1% (Typ), 1.5% (Max)
    • Built-in hysteresis (VIT+)
      • 1.6 V < VIT- ≤ 3.0 V = 100 mV (Typical)
      • 3.1 V ≤ VIT- < 4.9 V = 200 mV (Typical)
  • Start-up delay (tSTRT): 220 µs (Typ), 350 µs (Max)
    • Programmable reset time delay (tD):
      • 50 µs (no capacitor) to 6.2 s (10-µF)
    • Active-low manual reset (MR)
    • Three output topologies:
      • TPS3840DL: open-drain, active-low (RESET), requires pull-up resistor
      • TPS3840PL: push-pull, active-low (RESET)
      • TPS3840PH: push-pull, active-high (RESET)
    • Wide temperature range: –40°C to +125°C
    • Package: SOT23-5 (DBV)
    • Wide operating voltage: 1.5 V to 10 V
    • Nano supply current: 300 nA (Typ), 700 nA (Max)
    • Fixed threshold voltage (VIT-)
      • Threshold from 1.6 V to 4.9 V in 0.1-V steps
      • High accuracy: 1% (Typ), 1.5% (Max)
      • Built-in hysteresis (VIT+)
        • 1.6 V < VIT- ≤ 3.0 V = 100 mV (Typical)
        • 3.1 V ≤ VIT- < 4.9 V = 200 mV (Typical)
    • Start-up delay (tSTRT): 220 µs (Typ), 350 µs (Max)
      • Programmable reset time delay (tD):
        • 50 µs (no capacitor) to 6.2 s (10-µF)
      • Active-low manual reset (MR)
      • Three output topologies:
        • TPS3840DL: open-drain, active-low (RESET), requires pull-up resistor
        • TPS3840PL: push-pull, active-low (RESET)
        • TPS3840PH: push-pull, active-high (RESET)
      • Wide temperature range: –40°C to +125°C
      • Package: SOT23-5 (DBV)

      Wide Vin allows monitoring 9V rails or batteries without external components and 24V rails with external resistors. Nano-Iq extends battery life for low power applications and minimizes current consumption when using external resistors. Fast start-up delay allows the detection of a voltage fault before the rest of the system powers up providing maximum safety in hazardous start-up fault conditions. Low Power-on-Reset (VPOR) prevents false resets, premature enable or turn-on of next device, and proper transistor control during power-up and power-down.

      Reset output signal is asserted when the voltage at VDD drops below the negative voltage threshold (VIT-) or when manual reset (MR) is pulled to a low logic (VMR_L). Reset signal is cleared when VDD rise above VIT- plus hysteresis (VIT+) and manual reset is floating or above VMR_H and the reset time delay (tD) expires. Reset time delay can be programmed by connecting a capacitor between CT pin and ground. For a fast reset CT pin can be left floating.

      Additional features: Built-in glitch immunity protection for MR and VDD, built-in hysteresis, low open-drain output leakage current (ILKG(OD)).












      Wide Vin allows monitoring 9V rails or batteries without external components and 24V rails with external resistors. Nano-Iq extends battery life for low power applications and minimizes current consumption when using external resistors. Fast start-up delay allows the detection of a voltage fault before the rest of the system powers up providing maximum safety in hazardous start-up fault conditions. Low Power-on-Reset (VPOR) prevents false resets, premature enable or turn-on of next device, and proper transistor control during power-up and power-down.

      Reset output signal is asserted when the voltage at VDD drops below the negative voltage threshold (VIT-) or when manual reset (MR) is pulled to a low logic (VMR_L). Reset signal is cleared when VDD rise above VIT- plus hysteresis (VIT+) and manual reset is floating or above VMR_H and the reset time delay (tD) expires. Reset time delay can be programmed by connecting a capacitor between CT pin and ground. For a fast reset CT pin can be left floating.

      Additional features: Built-in glitch immunity protection for MR and VDD, built-in hysteresis, low open-drain output leakage current (ILKG(OD)).












      Descargar Ver vídeo con transcripción Video

      Productos similares que pueden interesarle

      open-in-new Comparar alternativas
      Pin por pin con la misma funcionalidad que el dispositivo comparado
      TLV840 ACTIVO Supervisor de baja tensión, con retardo de reinicio ajustable y reinicio manual Enhanced accuracy (0.5%) and lower quiescent current (120 nA) with wider range of threshold options 0.8 V to 5.4 V

      Documentación técnica

      star =Principal documentación para este producto seleccionada por TI
      No se encontraron resultados. Borre su búsqueda y vuelva a intentarlo.
      Ver todo 15
      Tipo Título Fecha
      * Data sheet TPS3840 Nano Power, High Input Voltage Supervisor With MR and Programmable Delay datasheet (Rev. D) PDF | HTML 29 ene 2020
      Functional safety information TPS3840 Functional Safety FIT Rate, FMD and Pin FMA PDF | HTML 13 nov 2023
      White paper Overcoming Low-IQ Challenges in Low-Power Applications (Rev. B) PDF | HTML 12 abr 2023
      Application brief Using Voltage Supervisors in High Voltage Applications (Rev. B) PDF | HTML 20 feb 2023
      Application note Camera Module Shutdown Power Sequence Solution PDF | HTML 25 abr 2022
      EVM User's guide TPS3840EVM Voltage Supervisor User's Guide (Rev. A) 13 may 2021
      Application note Back-up Power Supply Switchover with Supply Voltage Supervisor & Power & Power M 09 abr 2020
      Application note Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A) 17 mar 2020
      Application note Programmable Push-Button, Pulse Detector, and Pulse Generator Solutions 10 mar 2020
      E-book E-book: An engineer’s guide to industrial robot designs 12 feb 2020
      E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 jun 2019
      Application note Comparing Voltage and Processor Monitoring Solutions 05 abr 2019
      Technical article Voltage supervisor requirements for e-meter applications PDF | HTML 18 ene 2019
      Technical article Improve circuit breaker leakage current response with a voltage supervisor PDF | HTML 10 ene 2019
      Application brief Mitigating the Voltage Glitch on the Output of a Voltage Supervisor (Reset IC) D 27 jun 2018

      Diseño y desarrollo

      Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

      Placa de evaluación

      TPS3840EVM — Módulo de evaluación de supervisor de tensión de entrada alta de nanopotencia TPS3840

      The TPS3840 evaluation module (EVM)  is a platform for evaluating the TPS3840 device, which is a nanopower voltage supervisor with manual reset and programmable reset delay. TPS3840 offers operation up to 10 V, while maintaining very-low quiescent current of 350 nA (typ) in addition to 1% (...)

      Guía del usuario: PDF
      Modelo de simulación

      TPS3840DL16 PSPICE TRANSIENT UNENCRYPTED MODEL

      SNVMBS9.ZIP (98 KB) - PSpice Model
      Modelo de simulación

      TPS3840DL26 PSPICE TRANSIENT UNENCRYPTED MODEL

      SNVMBS7.ZIP (97 KB) - PSpice Model
      Modelo de simulación

      TPS3840DL27 PSpice Transient Model

      SNVMBN6.ZIP (51 KB) - PSpice Model
      Modelo de simulación

      TPS3840DL27 Unencrypted PSpice Transient Model

      SNVMBN8.ZIP (2 KB) - PSpice Model
      Modelo de simulación

      TPS3840DL28 PSPICE TRANSIENT UNENCRYPTED MODEL

      SNVMBR7.ZIP (97 KB) - PSpice Model
      Modelo de simulación

      TPS3840DL29 PSPICE TRANSIENT UNENCRYPTED MODEL

      SNVMBS0.ZIP (98 KB) - PSpice Model
      Modelo de simulación

      TPS3840DL30 PSPICE TRANSIENT UNENCRYPTED MODEL

      SNVMBR9.ZIP (97 KB) - PSpice Model
      Modelo de simulación

      TPS3840DL33 PSPICE TRANSIENT UNENCRYPTED MODEL

      SNVMBS1.ZIP (98 KB) - PSpice Model
      Modelo de simulación

      TPS3840DL37 PSPICE TRANSIENT UNENCRYPTED MODEL

      SNVMBS5.ZIP (98 KB) - PSpice Model
      Modelo de simulación

      TPS3840DL41 PSPICE TRANSIENT UNENCRYPTED MODEL

      SNVMBS4.ZIP (98 KB) - PSpice Model
      Modelo de simulación

      TPS3840DL42 PSPICE TRANSIENT UNENCRYPTED MODEL

      SNVMBS6.ZIP (98 KB) - PSpice Model
      Modelo de simulación

      TPS3840DL44 PSPICE TRANSIENT UNENCRYPTED MODEL

      SNVMBS3.ZIP (107 KB) - PSpice Model
      Modelo de simulación

      TPS3840DL45 PSPICE TRANSIENT UNENCRYPTED MODEL

      SNVMBS2.ZIP (106 KB) - PSpice Model
      Modelo de simulación

      TPS3840PH30 PSpice Transient Model

      SNVMBN9.ZIP (52 KB) - PSpice Model
      Modelo de simulación

      TPS3840PH30 Unencrypted PSpice Transient Model

      SNVMBN4.ZIP (2 KB) - PSpice Model
      Modelo de simulación

      TPS3840PL25 PSPICE TRANSIENT UNENCRYPTED MODEL

      SNVMBR8.ZIP (98 KB) - PSpice Model
      Modelo de simulación

      TPS3840PL28 PSpice Transient Model

      SNVMBN5.ZIP (51 KB) - PSpice Model
      Modelo de simulación

      TPS3840PL28 Unencrypted PSpice Transient Model

      SNVMBN7.ZIP (2 KB) - PSpice Model
      Herramienta de simulación

      PSPICE-FOR-TI — PSpice® para herramienta de diseño y simulación de TI

      PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
      Diseños de referencia

      TIDA-010041 — Diseño de referencia de supervisor de nano potencia, amplio VIN (12 V máx.) utilizado como comparado

      This reference design highlights a versatile use case for a low-power reset IC and a watchdog timer. With less than 1-µA current consumption, the TPS3840 device can be configured to work either as a comparator (with simple 3-pin configuration) or as a universal power supply supervisor that (...)
      Design guide: PDF
      Esquema: PDF
      Diseños de referencia

      TIDA-010243 — Diseño de referencia de contador electrónico con transformador de corriente trifásica y ADC independ

      En este diseño de referencia se implementa la medición de energía trifásica de clase 0,1 mediante un convertidor analógico-digital (ADC) multicanal de alto rendimiento, que muestrea los transformadores de corriente (TC) a 8 kHz para medir la corriente y la tensión de cada tramo de la red de CA. Con (...)
      Design guide: PDF
      Diseños de referencia

      TIDA-010036 — Diseño de referencia de medidor de electricidad de derivación monofásico con ADC independientes

      Este diseño de referencia implementa una medición de energía monofásico de clase 0.5 que usa convertidores de señal analógica a digital (ADC) multicanal independientes para muestrear un sensor de corriente de derivación. El diseño, que combina el sensor de derivación y una fuente de alimentación (...)
      Design guide: PDF
      Esquema: PDF
      Diseños de referencia

      TIDA-010037 — Diseño de referencia de medidor de electricidad CT de fase dividida y alta precisión con ADC indepen

      This reference design implements Class 0.1 split-phase energy measurement using high-performance, multi-channel analog-to-digital converters (ADC). The independent ADC samples the output of current transformers (CT) at 8 kHz to measure the current and voltage of each leg of the AC mains. The (...)
      Design guide: PDF
      Esquema: PDF
      Diseños de referencia

      TIDA-010055 — Diseño de referencia de arquitectura de alimentación no aislada con diagnóstico para módulos de relé

      This reference design showcases non-isolated power supply architectures for protection relays with analog input/output and communication modules generated from 5-, 12-, or 24-V DC input. To generate the power supplies the design uses DC/DC converters with an integrated FET, a power module with an (...)
      Design guide: PDF
      Esquema: PDF
      Encapsulado Pines Símbolos CAD, huellas y modelos 3D
      SOT-23 (DBV) 5 Ultra Librarian

      Pedidos y calidad

      Información incluida:
      • RoHS
      • REACH
      • Marcado del dispositivo
      • Acabado de plomo/material de la bola
      • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
      • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
      • Contenido del material
      • Resumen de calificaciones
      • Monitoreo continuo de confiabilidad
      Información incluida:
      • Lugar de fabricación
      • Lugar de ensamblaje

      Soporte y capacitación

      Foros de TI E2E™ con asistencia técnica de los ingenieros de TI

      El contenido lo proporcionan “tal como está” TI y los colaboradores de la comunidad y no constituye especificaciones de TI. Consulte los términos de uso.

      Si tiene preguntas sobre la calidad, el paquete o el pedido de productos de TI, consulte el soporte de TI. ​​​​​​​​​​​​​​

      Videos