TPS3840 Nano Power, High Input Voltage Supervisor With MR and Programmable Delay

1 Features

Wide operating voltage: 1.5 V to 10 V
Nano supply current: 300 nA (Typ), 700 nA (Max)
Fixed threshold voltage (V_IT-)
- Threshold from 1.6 V to 4.9 V in 0.1-V steps
- High accuracy: 1% (Typ), 1.5% (Max)
- Built-in hysteresis (V_IT+)
  - 1.6 V < V_IT- ≤ 3.0 V = 100 mV (Typical)
  - 3.1 V ≤ V_IT- < 4.9 V = 200 mV (Typical)
Start-up delay (t_STRT): 220 µs (Typ), 350 µs (Max)
Programmable reset time delay (t_D):
- 50 µs (no capacitor) to 6.2 s (10-µF)
Active-low manual reset (MR)
Three output topologies:
- TPS3840DL: open-drain, active-low (RESET), requires pull-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)

Grid infrastructure: circuit breaker, smart meter, other monitoring and protection equipment
Factory automation: field transmitter, PLC.
Building automation: fire safety, smoke detector, and HVAC
Electronic point of sale
Portable, battery-powered systems