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Supervisor & reset ICs
Circuitos integrados de restablecimiento y vigilancia

TPS3808-EP

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Circuito de supervisión de retardo programable, corriente quiescente baja, producto mejorado

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TPS3808-EP

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Detalles del producto

Rating HiRel Enhanced Product Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 0.405, 3.07 Features Manual reset capable, Reset time delay, Separate VDD & sense, Undervoltage monitor only Reset threshold accuracy (%) 0.5 Iq (typ) (mA) 0.0024 Output driver type/reset output Active-low, Open-drain Time delay (ms) 1.25, 20, 300, 1200 Watchdog timer WDI (s) None Operating temperature range (°C) -55 to 125
Rating HiRel Enhanced Product Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 0.405, 3.07 Features Manual reset capable, Reset time delay, Separate VDD & sense, Undervoltage monitor only Reset threshold accuracy (%) 0.5 Iq (typ) (mA) 0.0024 Output driver type/reset output Active-low, Open-drain Time delay (ms) 1.25, 20, 300, 1200 Watchdog timer WDI (s) None Operating temperature range (°C) -55 to 125
SOT-23 (DBV) 6 8.12 mm² (2.9 mm × 2.8 mm)
  • Controlled Baseline
    • One Assembly Site
    • One Test Site
    • One Fabrication Site
  • Extended Temperature Performance of
    –55°C to 125°C
  • Enhanced Diminishing Manufacturing Sources
    (DMS) Support
  • Enhanced Product-Change Notification
  • Qualification Pedigree1
  • Power-On Reset Generator With Adjustable
    Delay Time: 1.25 ms to 10 s
  • Very Low Quiescent Current: 2.4 µA Typical
  • High Threshold Accuracy: 0.5% Typical
  • Fixed Threshold Voltages for Standard Voltage
    Rails From 0.9 V to 5 V and Adjustable Voltage
    Down to 0.4 V Are Available
  • Manual Reset (MR) Input
  • Open-Drain RESET Output
  • Temperature Range: –55°C to 125°C
  • Small SOT-23 Package
  • Controlled Baseline
    • One Assembly Site
    • One Test Site
    • One Fabrication Site
  • Extended Temperature Performance of
    –55°C to 125°C
  • Enhanced Diminishing Manufacturing Sources
    (DMS) Support
  • Enhanced Product-Change Notification
  • Qualification Pedigree1
  • Power-On Reset Generator With Adjustable
    Delay Time: 1.25 ms to 10 s
  • Very Low Quiescent Current: 2.4 µA Typical
  • High Threshold Accuracy: 0.5% Typical
  • Fixed Threshold Voltages for Standard Voltage
    Rails From 0.9 V to 5 V and Adjustable Voltage
    Down to 0.4 V Are Available
  • Manual Reset (MR) Input
  • Open-Drain RESET Output
  • Temperature Range: –55°C to 125°C
  • Small SOT-23 Package

The TPS3808xxx family of microprocessor supervisory circuits monitors system voltages from 0.4 V to 5.0 V, asserting an open-drain RESET signal when the SENSE voltage drops below a preset threshold or when the manual reset (MR) pin drops to a logic low. The RESET output remains low for the user-adjustable delay time after the SENSE voltage and manual reset (MR) return above the respective thresholds.

The TPS3808 uses a precision reference to achieve 0.5% threshold accuracy for VIT ≤ 3.3 V. The reset delay time can be set to 20 ms by disconnecting the CT pin, 300 ms by connecting the CT pin to VDD using a resistor, or can be user-adjusted between 1.25 ms and 10 s by connecting the CT pin to an external capacitor. The TPS3808 has a very low typical quiescent current of 2.4 µA, so it is well-suited to battery-powered applications. It is available in a small SOT-23 package, and is fully specified over a temperature range of –55°C to +125°C (TJ).

The TPS3808xxx family of microprocessor supervisory circuits monitors system voltages from 0.4 V to 5.0 V, asserting an open-drain RESET signal when the SENSE voltage drops below a preset threshold or when the manual reset (MR) pin drops to a logic low. The RESET output remains low for the user-adjustable delay time after the SENSE voltage and manual reset (MR) return above the respective thresholds.

The TPS3808 uses a precision reference to achieve 0.5% threshold accuracy for VIT ≤ 3.3 V. The reset delay time can be set to 20 ms by disconnecting the CT pin, 300 ms by connecting the CT pin to VDD using a resistor, or can be user-adjusted between 1.25 ms and 10 s by connecting the CT pin to an external capacitor. The TPS3808 has a very low typical quiescent current of 2.4 µA, so it is well-suited to battery-powered applications. It is available in a small SOT-23 package, and is fully specified over a temperature range of –55°C to +125°C (TJ).
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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos TPS3808-EP Low Quiescent Current, Programmable Delay Supervisory Circuit datasheet (Rev. D) PDF | HTML 24/12/2014
* Informe de radiación y confiabilidad TPS3808-EP Reliability Report (Rev. A) 18/06/2018
* VID TPS3808-EP VID V6208607 21/06/2016
Nota sobre la aplicación Optimizing Resistor Dividers at a Comparator (Rev. B) PDF | HTML 30/04/2021
Libro electrónico Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28/06/2019
Nota sobre la aplicación Adding Hysteresis to Supply Voltage Supervisor 19/08/2009

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