Inicio Gestión de la energía Supervisor & reset ICs
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Gestión de la energía
Supervisor & reset ICs

TPS386040

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Supervisores de tensión de alimentación cuádruple, inserción y extracción, retardo programable y tem

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TPS386040

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Detalles del producto

Number of supplies monitored 3, 4 Threshold voltage 1 (typ) (V) 0.4 Features Manual reset capable, Negative voltage monitoring, Separate VDD & sense, Timeout watchdog, Undervoltage and overvoltage monitor, Watchdog timer Reset threshold accuracy (%) 0.5 Iq (typ) (mA) 0.011 Output driver type/reset output Active-low, Push-Pull Time delay (ms) 20, 300 Supply voltage (min) (V) 1.8 Supply voltage (max) (V) 6.5 Rating Catalog Watchdog timer WDI (s) 0.6 Operating temperature range (°C) -40 to 125
Number of supplies monitored 3, 4 Threshold voltage 1 (typ) (V) 0.4 Features Manual reset capable, Negative voltage monitoring, Separate VDD & sense, Timeout watchdog, Undervoltage and overvoltage monitor, Watchdog timer Reset threshold accuracy (%) 0.5 Iq (typ) (mA) 0.011 Output driver type/reset output Active-low, Push-Pull Time delay (ms) 20, 300 Supply voltage (min) (V) 1.8 Supply voltage (max) (V) 6.5 Rating Catalog Watchdog timer WDI (s) 0.6 Operating temperature range (°C) -40 to 125
VQFN (RGP) 20 16 mm² 4 x 4
  • Four Independent Voltage Supervisors
  • Channel 1:
    • Adjustable Threshold Down to 0.4 V
    • Manual Reset (MR) Input
  • Channels 2, 3:
    • Adjustable Threshold Down to 0.4 V
  • Channel 4:
    • Adjustable Threshold at Any Positive or Negative Voltage
    • Window Comparator
  • Adjustable Delay Time: 1.4 ms to 10 s
  • Threshold Accuracy: 0.25% Typical
  • Very Low Quiescent Current: 11 µA Typical
  • Watchdog Timer With Dedicated Output
  • Well-Controlled Output During Power Up
  • TPS386000: Open-Drain RESETn and WDO
  • TPS386040: Push-Pull RESETn and WDO
  • Package: 4-mm × 4-mm, 20-Pin VQFN
  • Four Independent Voltage Supervisors
  • Channel 1:
    • Adjustable Threshold Down to 0.4 V
    • Manual Reset (MR) Input
  • Channels 2, 3:
    • Adjustable Threshold Down to 0.4 V
  • Channel 4:
    • Adjustable Threshold at Any Positive or Negative Voltage
    • Window Comparator
  • Adjustable Delay Time: 1.4 ms to 10 s
  • Threshold Accuracy: 0.25% Typical
  • Very Low Quiescent Current: 11 µA Typical
  • Watchdog Timer With Dedicated Output
  • Well-Controlled Output During Power Up
  • TPS386000: Open-Drain RESETn and WDO
  • TPS386040: Push-Pull RESETn and WDO
  • Package: 4-mm × 4-mm, 20-Pin VQFN

The TPS3860x0 family of supply voltage supervisors (SVSs) can monitor four power rails that are greater than 0.4 V and one power rail less than 0.4 V (including negative voltage) with a 0.25% (typical) threshold accuracy. Each of the four supervisory circuits (SVS-n) assert a RESETn or RESETn output signal when the SENSEm input voltage drops below the programmed threshold. With external resistors, the threshold of each SVS-n can be programmed (where n = 1, 2, 3, 4 and m = 1, 2, 3, 4L, 4H).

Each SVS-n has a programmable delay before releasing RESETn or RESETn. The delay time can be set independently for each SVS from 1.4 ms to 10 s through the CTn pin connection. Only SVS-1 has an active-low manual reset (MR) input; a logic-low input to MR asserts RESET1 or RESET1.

SVS-4 monitors the threshold window using two comparators. The extra comparator can be configured as a fifth SVS to monitor negative voltage with voltage reference output VREF.

The TPS3860x0 has a very low quiescent current of 11 µA (typical) and is available in a small, 4-mm x 4-mm, VQFN-20 package.

The TPS3860x0 family of supply voltage supervisors (SVSs) can monitor four power rails that are greater than 0.4 V and one power rail less than 0.4 V (including negative voltage) with a 0.25% (typical) threshold accuracy. Each of the four supervisory circuits (SVS-n) assert a RESETn or RESETn output signal when the SENSEm input voltage drops below the programmed threshold. With external resistors, the threshold of each SVS-n can be programmed (where n = 1, 2, 3, 4 and m = 1, 2, 3, 4L, 4H).

Each SVS-n has a programmable delay before releasing RESETn or RESETn. The delay time can be set independently for each SVS from 1.4 ms to 10 s through the CTn pin connection. Only SVS-1 has an active-low manual reset (MR) input; a logic-low input to MR asserts RESET1 or RESET1.

SVS-4 monitors the threshold window using two comparators. The extra comparator can be configured as a fifth SVS to monitor negative voltage with voltage reference output VREF.

The TPS3860x0 has a very low quiescent current of 11 µA (typical) and is available in a small, 4-mm x 4-mm, VQFN-20 package.
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Documentación técnica

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Tipo Título Fecha
* Data sheet TPS386000 and TPS386040 Quad Supply Voltage Supervisors With Adjustable Delay and Watchdog Timer datasheet (Rev. F) PDF | HTML 03 oct 2018
Application note Optimizing Resistor Dividers at a Comparator (Rev. B) PDF | HTML 30 abr 2021
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 jun 2019

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Placa de evaluación

TPS386040EVM — Módulo de evaluación de supervisores de tensión de alimentación cuádruple TPS386040

The TPS386040EVM provides the capabilities needed for supervising and sequencing four power supplies, including one negative power supply. The EVM also provides an I2C interface for use with the TI USB-GPIO adapter.
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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 (...)
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