Overview
The TPS3702CX12DDCR, produced by Texas Instruments, is a high-accuracy overvoltage and undervoltage window voltage detector. This device is packaged in a small SOT-6 package, making it suitable for systems with limited space. It is designed for applications that require precise voltage monitoring, particularly in systems operating on low-voltage supply rails with narrow margin supply tolerances. The TPS3702 features internal resistors for setting overvoltage and undervoltage thresholds, eliminating the need for external resistors and enhancing overall accuracy and design simplicity.
Key Specifications
| Parameter | Min | Typical | Max | Unit |
|---|---|---|---|---|
| VDD Supply Voltage Range | 2 | - | 18 | V |
| VIT+(OV) Positive-Going Threshold Accuracy | -0.9% | ±0.25% | 0.9% | % |
| VIT–(UV) Negative-Going Threshold Accuracy | -0.9% | ±0.25% | 0.9% | % |
| VHYS Hysteresis Voltage | 0.3% | 0.55% | 0.8% | % |
| IDD Supply Current (VDD = 2V) | 6.0 | 7.0 | 10 | µA |
| IDD Supply Current (VDD ≥ 5V) | 7.0 | 7.0 | 12 | µA |
| ISENSE Input Current (SENSE pin) | 1 | - | 1.5 | µA |
| VOL Low-Level Output Voltage | 250 | - | 250 | mV |
| tpd(HL) High-to-Low Propagation Delay | 19 | - | - | µs |
| tpd(LH) Low-to-High Propagation Delay | 35 | - | - | µs |
Key Features
- High threshold accuracy: ±0.25% (typical) and ±0.9% over the temperature range of –40°C to 125°C.
- 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% and 1.0% options.
- SOT-6 package with dimensions of 2.90mm × 1.60mm.
- Independent reset outputs for OV and UV pins, which can be tied together using wired-OR logic.
- Outputs can be pulled up to 18V, independent of the device supply voltage.
Applications
- FPGA and ASIC applications.
- DSP-based systems.
- Industrial control systems.
- Factory automation.
- Personal electronics.
- Building automation.
- Motor drives.
Q & A
- What is the primary function of the TPS3702?
The TPS3702 is a high-accuracy overvoltage and undervoltage window voltage detector.
- What is the supply voltage range of the TPS3702?
The supply voltage range is from 2V to 18V.
- What is the typical quiescent current of the TPS3702?
The typical quiescent current is 7µA.
- How accurate are the threshold voltages of the TPS3702?
The threshold voltages have an accuracy of ±0.25% (typical) and ±0.9% over the temperature range of –40°C to 125°C.
- What type of outputs does the TPS3702 provide?
The TPS3702 provides open-drain outputs for overvoltage and undervoltage indication.
- Can the outputs of the TPS3702 be pulled up to different voltage levels?
Yes, the outputs can be pulled up to 18V, independent of the device supply voltage.
- What is the purpose of the SET pin on the TPS3702?
The SET pin is used to select between the two available threshold voltages designed into each device.
- Does the TPS3702 require external resistors for setting thresholds?
No, the TPS3702 includes internal resistors for setting overvoltage and undervoltage thresholds.
- What are some common applications of the TPS3702?
Common applications include FPGA and ASIC applications, DSP-based systems, industrial control systems, factory automation, personal electronics, building automation, and motor drives.
- What is the operating temperature range of the TPS3702?
The operating temperature range is from –40°C to 125°C.
