text.skipToContent text.skipToNavigation


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

NEW - Custom reel may be available
Inventory: 17,571  

Quality information

RoHS Yes
Lead finish / Ball material NIPDAU
MSL rating / Peak reflow Level-1-260C-UNLIM
Quality, reliability
& packaging information

Information included:

  • RoHS
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
View or download

Packaging information

Package | Pins Package qty | Carrier: Operating temperature range (℃)
SOT-23 (DBV) | 5 3,000 | LARGE T&R
Custom reel may be available
-40 to 125
Package | Pins SOT-23 (DBV) | 5
Package qty | Carrier: 3,000 | LARGE T&R
Custom reel may be available
Operating temperature range (℃) -40 to 125
View TI packaging information

Features for the TPS3840

  • 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
    • 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)
  • Start-up delay (tSTRT): 220 µs (Typ), 350 µs (Max)
    • Programmable reset time delay (tD):
      • 50 µs (no capacitor) to6.2 s (10-µF)
    • Active-low manual reset (MR)
    • Three output topologies:
      • TPS3840DL: open-drain, active-low (RESET), requirespull-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)

    All trademarks are the property of their respective owners.

Description for the TPS3840

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

Reset output signal is asserted when the voltage at VDD dropsbelow the negative voltage threshold (VIT-) or when manual reset(MR) is pulled to a low logic(VMR_L). Reset signal is cleared whenVDD rise above VIT- plus hysteresis(VIT+) and manual reset 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: Built-in glitch immunity protection for MRand VDD, built-in hysteresis, low open-drain output leakage current(ILKG(OD)).


Qty Price (USD)
1-99 0.618
100-249 0.475
250-999 0.35
1,000+ 0.25