Overview
The TPS3702CX12QDDCRQ1 is an automotive high-accuracy window voltage detector produced by Texas Instruments. This integrated circuit is designed for overvoltage and undervoltage monitoring in systems that operate on low-voltage supply rails with narrow margin supply tolerances. It is packaged in a small SOT-23-6 (SOT-6) package, making it suitable for space-constrained applications. The device is AEC-Q100 qualified, ensuring it meets the stringent requirements for automotive applications, with an operating temperature range of -40°C to 125°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of supplies monitored | 1 | |
| Threshold voltage (typ) | 1, 1.2, 1.8, 3.3, 5 | V |
| Reset threshold accuracy (%) | 0.9 | % |
| Iq (typ) | 0.006 | mA |
| Time delay | 5, 10, 100, 200 | ms |
| Supply voltage (min) | 2 | V |
| Supply voltage (max) | 18 | V |
| Output driver type/reset output | Active-low, Open-drain | |
| Operating temperature range | -40 to 125 | °C |
| Package/Case | SOT-23-6 |
Key Features
- Wide input voltage range: 2V to 18V.
- High threshold accuracy: 0.25% (typical), 0.9% over temperature range.
- Fixed window thresholds optimized for nominal rails between 1V and 5V.
- Open-drain outputs for overvoltage and undervoltage indication.
- Internal glitch immunity and noise filters to prevent false resets.
- Threshold adjust using the SET pin.
- Low quiescent current: 7µA (typical).
- Internal threshold hysteresis: 0.55%, 1.0%.
- Separate SENSE input pin and VDD pin for redundancy in safety-critical and high-reliability systems.
- Independent reset outputs for OV and UV pins, with open-drain configuration allowing UV and OV to be tied together.
Applications
The TPS3702CX12QDDCRQ1 is designed for automotive applications where high accuracy and reliability are crucial. It is suitable for systems that require monitoring of low-voltage supply rails with narrow margin supply tolerances. Typical applications include:
- Automotive electronics: Engine control units, safety systems, and other critical automotive components.
- Safety-critical systems: Where redundancy and high reliability are essential.
- Industrial control systems: For monitoring and protecting against voltage anomalies in industrial environments.
Q & A
- What is the primary function of the TPS3702CX12QDDCRQ1?
The TPS3702CX12QDDCRQ1 is an integrated overvoltage and undervoltage window voltage detector.
- What is the operating temperature range of the TPS3702CX12QDDCRQ1?
The operating temperature range is -40°C to 125°C.
- What is the input voltage range for the TPS3702CX12QDDCRQ1?
The input voltage range is from 2V to 18V.
- How does the SET pin function in the TPS3702CX12QDDCRQ1?
The SET pin is used to select between the two available threshold voltages designed into each device.
- What type of outputs does the TPS3702CX12QDDCRQ1 have?
The device features open-drain outputs for overvoltage and undervoltage indication.
- Is the TPS3702CX12QDDCRQ1 AEC-Q100 qualified?
Yes, the TPS3702CX12QDDCRQ1 is AEC-Q100 qualified for automotive applications.
- What is the quiescent current of the TPS3702CX12QDDCRQ1?
The typical quiescent current is 7µA.
- Does the TPS3702CX12QDDCRQ1 require external resistors for setting thresholds?
No, the device does not require external resistors for setting overvoltage and undervoltage reset thresholds.
- How does the device handle noise and glitches?
The device includes internal glitch immunity and noise filters to prevent false resets.
- Can the UV and OV outputs be tied together?
Yes, due to the open-drain configuration, the UV and OV outputs can be tied together.
