High-accuracy window supervisor with reset time delay
Product details
Parameters
Package | Pins | Size
Features
- Input voltage range: 1.7 V to 5.5 V
- Undervoltage lockout (UVLO): 1.7 V
- Low quiescent current: 7 µA (Max)
- High threshold accuracy:
- ± 0.25% (typical)
- ± 0.7% (–40°C to +125°C)
- Fixed window threshold levels
- 50-mV steps from 500 mV to 1.3 V
- 1.5 V, 1.8 V, 2.5 V, 2.8 V, 2.9 V 3.3 V, 5 V
- Available in UV threshold only
- Window tolerance available from ±3% to ±7%
- User adjustable voltage threshold levels
- Internal glitch immunity and hysteresis
- Fixed time delay options: 50 µs, 1 ms, 5 ms, 10 ms, 20 ms, 100 ms, 200 ms
- Programmable time delay option with a single external capacitor
- Open-drain active low UV and OV monitor
- RESET voltage latching output mode
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Description
The TPS3703 device is an integrated overvoltage (OV) and undervoltage (UV) monitor or reset IC in industry’s smallest 6-pin DSE package. This highly accurate voltage supervisor is ideal for systems that operate on low-voltage supply rails and have narrow margin supply tolerances. Low threshold hysteresis prevent false reset signals when the monitored voltage supply is in its normal range of operation. Internal glitch immunity and noise filters further eliminate false resets resulting from erroneous signals.
The TPS3703 does not require any external resistors for setting overvoltage and undervoltage reset thresholds, which further optimizes overall accuracy, cost, solution size, and improves reliability for safety systems. The Capacitor Time (CT) pin is used to select between the two available reset time delays designed into each device and also to adjust the reset time delay by connecting a capacitor. A separate SENSE input pin and VDD pin allow for the redundancy sought by high-reliability systems.
This device has a low typical quiescent current specification of 4.5 µA (typical). The TPS3703 is suitable for industrial applications and applications that require accurate undervoltage and overvoltage monitoring.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | TPS3703 High Accuracy Over/Undervoltage Reset IC w Time Delay, Manual Reset datasheet (Rev. B) | Nov. 13, 2020 |
Application note | Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A) | Mar. 17, 2020 | |
User guide | TPS3703Q1-A4120EVM User's Guide | Aug. 21, 2018 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The TPS3703Q1-A4120 evaluation module (EVM) tests the features of the TPS3703-Q1 device to the fullest extent. TPS3703-Q1 is a high-accuracy window supervisor or reset IC in a 6-pin very-very-thin small-outline no-lead (WSON) package. TPS3703-Q1 includes a CT pin that is used to (...)
Features
- Fixed window threshold
- Fixed and adjustable time-delay options
- Internal glitch immunity
- Reset latch feature
- TPS3703-Q1 package: 6-pin WSON (1.5 mm × 1.5 mm)
- High threshold accuracy
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
- (...)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
WSON (DSE) | 6 | 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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