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Supply-voltage supervisors

TPS38-Q1

ACTIVE

Automotive 65-V dual-channel supervisor with ultra-low quiescent current and time-delay function

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Data sheet

TPS38-Q1

ACTIVE
Data sheet Order now

Product details

Rating Automotive Number of supplies monitored 1, 2 Threshold voltage 1 (typ) (V) 0.8, 4, 4.8, 5.1, 5.8, 6.8, 7.5, 7.8, 8, 9, 9.5, adjustable Features Detection time delay, Latching, Manual reset capable, Overvoltage monitor only, Reset time delay, Separate VDD & sense, Undervoltage and overvoltage monitor, Undervoltage monitor only, Wide VIN, Wide input voltage Reset threshold accuracy (%) 1, 1.5 Iq (typ) (mA) 0.0007, 0.001 Output driver type/reset output Active-high, Active-low, Open-drain, Push-Pull Time delay (ms) 40, 90, 100 Watchdog timer WDI (s) None TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125
Rating Automotive Number of supplies monitored 1, 2 Threshold voltage 1 (typ) (V) 0.8, 4, 4.8, 5.1, 5.8, 6.8, 7.5, 7.8, 8, 9, 9.5, adjustable Features Detection time delay, Latching, Manual reset capable, Overvoltage monitor only, Reset time delay, Separate VDD & sense, Undervoltage and overvoltage monitor, Undervoltage monitor only, Wide VIN, Wide input voltage Reset threshold accuracy (%) 1, 1.5 Iq (typ) (mA) 0.0007, 0.001 Output driver type/reset output Active-high, Active-low, Open-drain, Push-Pull Time delay (ms) 40, 90, 100 Watchdog timer WDI (s) None TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125
WSON (DSK) 10 6.25 mm² (2.5 mm × 2.5 mm) SOT-23-THN (DYY) 14 13.692 mm² (4.2 mm × 3.26 mm)
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature T A
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C7B
  • Wide supply voltage range: 2.7 V to 65 V
  • Functional Safety-Capable targeted
    • Documentation available to aid functional safety system design
  • SENSE and RESET pins are 65 V graded
  • Low quiescent current: 1 µA (typical)
  • Flexible and wide voltage threshold options
    • 2.7 V to 36 V (1.5% maximum accuracy)
    • 800 mV option (1% maximum accuracy)
  • Built-in hysteresis (V HYS)
    • Percentage options: 2% to 13% (1% steps)
    • Fixed options: V TH < 8 V = 0.5 V, 1 V, 1.5 V, 2 V, 2.5 V
  • Programmable reset time delay
    • 10 nF = 12.8 ms, 10 µF = 12.8 s
  • Programmable sense time delay
    • 10 nF = 1.28 ms, 10 µF = 1.28 s
  • Manual Reset ( MR) feature
  • Output topology:
    • Channel 1: Open-Drain or Push-Pull
    • Channel 2: Open-Drain
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature T A
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C7B
  • Wide supply voltage range: 2.7 V to 65 V
  • Functional Safety-Capable targeted
    • Documentation available to aid functional safety system design
  • SENSE and RESET pins are 65 V graded
  • Low quiescent current: 1 µA (typical)
  • Flexible and wide voltage threshold options
    • 2.7 V to 36 V (1.5% maximum accuracy)
    • 800 mV option (1% maximum accuracy)
  • Built-in hysteresis (V HYS)
    • Percentage options: 2% to 13% (1% steps)
    • Fixed options: V TH < 8 V = 0.5 V, 1 V, 1.5 V, 2 V, 2.5 V
  • Programmable reset time delay
    • 10 nF = 12.8 ms, 10 µF = 12.8 s
  • Programmable sense time delay
    • 10 nF = 1.28 ms, 10 µF = 1.28 s
  • Manual Reset ( MR) feature
  • Output topology:
    • Channel 1: Open-Drain or Push-Pull
    • Channel 2: Open-Drain

The TPS38-Q1 is a 65 V input voltage detector with 1 µA I DD, 1% accuracy, and with a fast 10 µs detection time. This device can be connected directly to 12 V / 24 V automotive battery system for continuous monitoring of over (OV) or under (UV) voltage conditions; with its internal resistor divider, it offers the smallest total solution size. Wide hysteresis voltage options are available to ignore cold crank, start-stop and various car battery voltage transients. Built-in hysteresis on the SENSE pins prevents false reset signals when monitoring a supply voltage rail.

The separate VDD and SENSE pins allow redundancy sought by high-reliability automotive systems and SENSE can monitor higher and lower voltages than VDD. Optional use of external resistors are supported by the high impedance input of the SENSE pins. CTSx and CTRx pins allow delay adjustability on the rising and falling edges of the RESET signals. Also, CTSx functions as a debouncer by ignoring voltage glitches on the monitored voltage rails; CTRx operates as a manual reset ( MR) that can be used to force a system reset.

The TPS38-Q1 is available in WSON or SOT-23 package. The WSON package has wettable flanks allowing the facilitation for Automatic Optical Inspection (AOI) and low resolution X-ray inspection. The central pad is non-conductive to increase the creepage between VDD and GND per guidelines in IEC60664.

The TPS38-Q1 is a 65 V input voltage detector with 1 µA I DD, 1% accuracy, and with a fast 10 µs detection time. This device can be connected directly to 12 V / 24 V automotive battery system for continuous monitoring of over (OV) or under (UV) voltage conditions; with its internal resistor divider, it offers the smallest total solution size. Wide hysteresis voltage options are available to ignore cold crank, start-stop and various car battery voltage transients. Built-in hysteresis on the SENSE pins prevents false reset signals when monitoring a supply voltage rail.

The separate VDD and SENSE pins allow redundancy sought by high-reliability automotive systems and SENSE can monitor higher and lower voltages than VDD. Optional use of external resistors are supported by the high impedance input of the SENSE pins. CTSx and CTRx pins allow delay adjustability on the rising and falling edges of the RESET signals. Also, CTSx functions as a debouncer by ignoring voltage glitches on the monitored voltage rails; CTRx operates as a manual reset ( MR) that can be used to force a system reset.

The TPS38-Q1 is available in WSON or SOT-23 package. The WSON package has wettable flanks allowing the facilitation for Automatic Optical Inspection (AOI) and low resolution X-ray inspection. The central pad is non-conductive to increase the creepage between VDD and GND per guidelines in IEC60664.
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Technical documentation

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* Data sheet TPS38-Q1 Wide VIN 65 V Dual Channel Overvoltage or Undervoltage (OV or UV) Detector with Programmable Sense and Reset Function for Automotive datasheet (Rev. E) PDF | HTML Jul 20, 2023
Application note Common Applications of Wide VIN Overvoltage and Undervoltage Supervisors PDF | HTML Sep 19, 2023
Application brief Using Voltage Supervisors in High Voltage Applications (Rev. B) PDF | HTML Feb 20, 2023
Functional safety information TPS3x-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA (Rev. A) PDF | HTML Jul 8, 2021

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Evaluation board

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WSON (DSK) 10 Ultra Librarian
SOT-23-THN (DYY) 14 Ultra Librarian
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