Overview
The TPS3702CX12DDCT, produced by Texas Instruments, is a high-accuracy overvoltage and undervoltage window voltage detector. This device is integrated into a small SOT-6 package and is designed for systems that operate on low-voltage supply rails with narrow margin supply tolerances. It is an excellent choice for applications requiring precise voltage monitoring and robust noise immunity.
The TPS3702 features a wide supply voltage range from 2V to 18V and highly accurate window threshold voltages, with an accuracy of 0.9% over the temperature range of –40°C to 125°C. The device includes internal resistors for setting overvoltage and undervoltage thresholds, eliminating the need for external resistors and thus increasing overall accuracy and reducing solution size and cost.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | 2V to 18V | V |
| Threshold Accuracy | 0.25% (typ), 0.9% (–40°C to 125°C) | % |
| Threshold Hysteresis | 0.55%, 1.0% | % |
| Quiescent Current | 7µA (typ) | µA |
| Operating Temperature Range | –40°C to 125°C | °C |
| Package Type | SOT-6 | - |
| Output Type | Open-Drain | - |
| SENSE Input Voltage Range | 1V to 5V | V |
| Low-Level Output Voltage | 250mV (max) | mV |
| Output Leakage Current | 300nA (max) | nA |
Key Features
- High Accuracy: The TPS3702 offers high threshold accuracy of 0.25% (typ) and 0.9% over the temperature range of –40°C to 125°C.
- Internal Threshold Setting: No external resistors are required for setting overvoltage and undervoltage thresholds, increasing accuracy and reducing solution size and cost.
- Low Threshold Hysteresis: Options of 0.55% and 1.0% prevent false reset signals when the monitored voltage supply is in its normal range of operation.
- Internal Glitch Immunity and Noise Filters: These features eliminate false resets resulting from erroneous signals.
- Open-Drain Outputs: Independent reset outputs for overvoltage and undervoltage indication, which can be tied together using wired-OR logic.
- Low Quiescent Current: A typical quiescent current of 7µA, making it energy-efficient.
- Wide Supply Voltage Range: Operates from 2V to 18V, suitable for various system requirements.
- Redundancy Features: Separate SENSE input pin and VDD pin for redundancy in safety-critical and high-reliability systems.
Applications
- FPGA and ASIC Applications: Suitable for monitoring power supplies in Field-Programmable Gate Arrays (FPGA) and Application-Specific Integrated Circuits (ASIC).
- DSP-Based Systems: Used in Digital Signal Processor (DSP) systems for precise voltage monitoring.
- Industrial Control Systems: Ideal for industrial control systems that require robust and accurate voltage monitoring.
- Factory Automation: Applied in factory automation systems to ensure reliable operation.
- Personal Electronics: Used in various personal electronic devices for voltage monitoring.
- Building Automation: Suitable for building automation systems that require accurate voltage detection.
- Motor Drives: Applied in motor drive systems to monitor and protect against voltage anomalies.
Q & A
- What is the supply voltage range of the TPS3702?
The TPS3702 operates over a supply voltage range of 2V to 18V.
- What is the typical quiescent current of the TPS3702?
The typical quiescent current of the TPS3702 is 7µA.
- Does the TPS3702 require external resistors for threshold setting?
No, the TPS3702 does not require external resistors for setting overvoltage and undervoltage thresholds.
- What are the threshold hysteresis options available in the TPS3702?
The TPS3702 offers threshold hysteresis options of 0.55% and 1.0%.
- What type of outputs does the TPS3702 provide?
The TPS3702 provides open-drain outputs for overvoltage and undervoltage indication.
- What is the operating temperature range of the TPS3702?
The TPS3702 is qualified for use over the industrial temperature range of –40°C to 125°C.
- Can the outputs of the TPS3702 be tied together?
- What is the package type of the TPS3702?
The TPS3702 is packaged in a small SOT-6 package.
- What are some of the applications of the TPS3702?
The TPS3702 is used in FPGA and ASIC applications, DSP-based systems, industrial control systems, factory automation, personal electronics, building automation, and motor drives.
- How does the TPS3702 handle noise and glitches?
The TPS3702 includes internal glitch immunity and noise filters to eliminate false resets resulting from erroneous signals.
