Processor supervisor with power fail and integrated watchdog timer
Product details
Parameters
Package | Pins | Size
Features
- Power-on reset generator with fixed delay time of 200 ms (no external capacitor needed)
- Precision supply voltage monitor: 2.5 V, 3 V, 3.3 V, and 5 V
- Pin-for-pin compatible with the MAX705 through MAX708 Series
- Integrated watchdog time (TPS3705-xx Only)
- Voltage monitor for power-fail or low-battery warning
- Maximum supply current of 50 µA
- 8-Pin MSOP and 8-Pin SOIC packages
- Temperature range: –40°C to 85°C (–40°C to 125°C for TPS3705-33)
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Description
The TPS370x-xx family of microprocessor supply-voltage supervisors provide circuit initialization and timing supervision, primarily for DSP and processor-based systems.
During power-on, RESET is asserted when the supply voltage VDD becomes higher than 1.1 V. Thereafter, the supply voltage supervisor monitors VDD and keeps RESET active as long as VDD remains below the threshold voltage VIT+. When the supply voltage drops below the threshold voltage VIT–, the output becomes active (low) again. No external components are required. All the devices of this family have a fixed-sense threshold voltage VIT– set by an internal voltage divider.
The product spectrum is designed for supply voltages of 2.5 V, 3 V, 3.3 V, and 5 V. The circuits are available in either 8-pin MSOP or standard SOIC packages. The TPS370x-xx devices are characterized for operation over a temperature range of −40°C to 85°C.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | Processor Supervisory Circuits with Power-Fail datasheet (Rev. F) | Oct. 23, 2020 |
E-book | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | Jun. 28, 2019 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Reference designs
Design files
-
download TIDA-010011 BOM.pdf (134KB) -
download TIDA-010011 Assembly Drawing.pdf (1564KB) -
download TIDA-010011 PCB.pdf (4603KB) -
download TIDA-010011 CAD Files.zip (7015KB) -
download TIDA-010011 Gerber.zip (799KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
HVSSOP (DGN) | 8 | View options |
SOIC (D) | 8 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Support & training
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