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Automotive high-input voltage supervisor with manual reset and programmable-reset time delay


Package | PIN: SOT-23 (DBV) | 5
Temp: Q (-40 to 125)
Carrier: Cut Tape
Qty Price
1-9 $1.24
10-24 $1.11
25-99 $1.03
100-249 $0.88
250-499 $0.81
500-749 $0.66
750-999 $0.53
1000+ $0.47


  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C ambient operatingtemperature
    • Device HBM ESD classification level2
    • Device CDM ESD classification level C7B
  • Wide operating voltage : 1.5 V to 10 V
    • Use external resistors to extend Vin range
  • Nano supply current : 350 nA (Typ), 700 nA (Max)
  • Fixed threshold voltage (VIT-)
    • Threshold from 1.6 V to 4.9 V in 0.1-V steps
    • Highaccuracy: 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)
  • Fast start-up delay (tSTRT): 350 µs (Max)
  • Programmable capacitor-based reset time delay:
    • tD: 50 µs (no capacitor) to 6.2 s(10-µF)
  • Active-low manual reset (MR)
  • Three output topologies:
    • TPS3840DL-Q1: open-drain, active-low(RESET)
    • TPS3840PL-Q1: push-pull, active-low(RESET)
    • TPS3840PH-Q1: push-pull, active-high (RESET)
  • Package: 5-pin SOT-23 (DBV)

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Texas Instruments  PTPS3840PL25DBVRQ1

The TPS3840-Q1 family of voltage supervisors or reset ICs can operate at high voltagelevels while maintaining very low quiescent current across the whole VDD andtemperature range. TPS3840-Q1 offers best combination of low power consumption, high accuracy andlow propagation delay (tp_HL= 30 µs typical).

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

Additional features: Low power-on reset voltage (VPOR), built-inglitch immunity protection for MR and VDD, built-in hysteresis, lowopen-drain output leakage current (ILKG(OD)). TPS3840-Q1 is a perfectvoltage monitoring solution for automotive applications and battery-powered / low powerapplications.