All trademarks are the property of their respective owners.
DescriptionThe TPS382xfamily of supervisors provide circuitinitialization and timing supervision, primarily for DSP and processor-based systems. During poweron, RESET active low as long as VDD remainsless than the threshold voltage, VIT?. An internal timer delays the returnof the output to the inactive state (high) to ensure proper system reset. The delay time,td, starts after VDD has risen above the thresholdvoltage (VIT? + VHYS). When the supply voltage dropsbelow the threshold voltage VIT?, the output becomes active (low) again. Noexternal components are required. All the devices of this family have a fixed-sense thresholdvoltage, VIT–, set by an internal voltage divider. The TPS382x family alsooffers watchdog time out options of 200 ms (TPS3820) and 1.6 s (TPS3823/4/8).
Power-On Reset Generator With Fixed Delay Timeof 200 ms (TPS3823/4/5/8) or 25 ms (TPS3820)
Manual Reset Input (TPS3820/3/5/8)
Reset Output Available in Active-Low (TPS3820/3/4/5), Active-High (TPS3824/5), andOpen Drain (TPS3828)
Supply Voltage Supervision Range: 2.5 V, 3 V, 3.3 V, 5 V
Watchdog Timer (TPS3820/3/4/8)
Supply Current of 15 μA (Typical)
5-Pin SOT-23 Package
Temperature Range: ?40°C to 85°C
All trademarks are the property of their respective owners.
DescriptionThe TPS382xfamily of supervisors provide circuitinitialization and timing supervision, primarily for DSP and processor-based systems. During poweron, RESET active low as long as VDD remainsless than the threshold voltage, VIT?. An internal timer delays the returnof the output to the inactive state (high) to ensure proper system reset. The delay time,td, starts after VDD has risen above the thresholdvoltage (VIT? + VHYS). When the supply voltage dropsbelow the threshold voltage VIT?, the output becomes active (low) again. Noexternal components are required. All the devices of this family have a fixed-sense thresholdvoltage, VIT–, set by an internal voltage divider. The TPS382x family alsooffers watchdog time out options of 200 ms (TPS3820) and 1.6 s (TPS3823/4/8).
Number of Voltages Monitored
1
Monitored Voltage
0 V to 5.8 V
Undervoltage Threshold
2.93 V
Overvoltage Threshold
3 V
Output Type
Push-Pull
Manual Reset
Resettable
Watchdog
Watchdog
Battery Backup Switching
No Backup
Power Up Reset Delay (Typ)
25 ms
Supply Voltage Max
5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
SOT-23-5
Packaging
Reel
Chip Enable Signals
No
Maximum Power Dissipation
437 mW
Minimum Operating Temperature
- 40 C
Power Fail Detection
No
Series
TPS3820-33
Factory Pack Quantity
3000
Supply Current (Typ)
15 uA
Supply Voltage Min
1.1 V