Gehäuseinformationen
| Gehäuse | Pins VQFN (RGP) | 20 |
| Betriebstemperaturbereich (°C) -40 to 125 |
| Gehäusemenge | Träger 250 | SMALL T&R |
Merkmale von TPS386040
- Four Independent Voltage Supervisors
- Channel 1:
- Adjustable Threshold Down to 0.4 V
- Manual Reset (MR) Input
- Channels 2, 3:
- Adjustable Threshold Down to 0.4 V
- Channel 4:
- Adjustable Threshold at Any Positive or Negative Voltage
- Window Comparator
- Adjustable Delay Time: 1.4 ms to 10 s
- Threshold Accuracy: 0.25% Typical
- Very Low Quiescent Current: 11 µA Typical
- Watchdog Timer With Dedicated Output
- Well-Controlled Output During Power Up
- TPS386000: Open-Drain RESETn and WDO
- TPS386040: Push-Pull RESETn and WDO
- Package: 4-mm × 4-mm, 20-Pin VQFN
Beschreibung von TPS386040
The TPS3860x0 family of supply voltage supervisors (SVSs) can monitor four power rails that are greater than 0.4 V and one power rail less than 0.4 V (including negative voltage) with a 0.25% (typical) threshold accuracy. Each of the four supervisory circuits (SVS-n) assert a RESETn or RESETn output signal when the SENSEm input voltage drops below the programmed threshold. With external resistors, the threshold of each SVS-n can be programmed (where n = 1, 2, 3, 4 and m = 1, 2, 3, 4L, 4H).
Each SVS-n has a programmable delay before releasing RESETn or RESETn. The delay time can be set independently for each SVS from 1.4 ms to 10 s through the CTn pin connection. Only SVS-1 has an active-low manual reset (MR) input; a logic-low input to MR asserts RESET1 or RESET1.
SVS-4 monitors the threshold window using two comparators. The extra comparator can be configured as a fifth SVS to monitor negative voltage with voltage reference output VREF.
The TPS3860x0 has a very low quiescent current of 11 µA (typical) and is available in a small, 4-mm x 4-mm, VQFN-20 package.