Texas Instruments TPS3831K50DQNT, Simple Reset/Power-On Reset IC, Active Low, Push-Pull Output, 4.38V threshold, 120ms minimum reset timeout, -40°C to 85°C, 4-X2SON (1x1) package
| Parameter | Value |
|---|---|
| Type | Simple Reset/Power-On Reset |
| Mounting | Surface Mount |
| Voltage - threshold | 4.38V |
| Number of voltages monitored | 1 |
| Operating temperature | -40°C~85°C(TA) |
| Reset | Active Low |
| Output | Push-Pull, Totem Pole |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Reset timeout | 120ms Minimum |
| Case | 4-XDFN Exposed Pad |
The TPS3831K50DQNT is a single-channel voltage supervisor that asserts a reset signal when the monitored supply drops below 4.38V. That threshold is set for a nominal 5V rail, giving you a clean brown-out detection window before the downstream logic goes undefined.
The minimum reset timeout is 120 ms, which gives the power supply enough time to stabilize before the processor starts executing code.
Yes, it is ROHS3 compliant, so it meets the current restriction-of-hazardous-substances directive for lead and other materials.