Overview
The TPS3702CX18DDCR, 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 require precise monitoring of power supply voltages. The TPS3702 features a wide supply voltage range of 2V to 18V and highly accurate window threshold voltages with an accuracy of ±0.25% (typ) and ±0.9% over the temperature range of –40°C to 125°C. It is ideal for applications requiring an active low signal when the monitored power supply voltage exits the specified accuracy band.
Key Specifications
| Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VDD Supply voltage range | 2 | 18 | V | ||
| VIT+(OV) Positive-going threshold accuracy | VSET ≤ VIL(SET), VSET ≥ VIH(SET) | –0.9% | ±0.25% | 0.9% | % |
| VIT–(UV) Negative-going threshold accuracy | VSET ≤ VIL(SET), VSET ≥ VIH(SET) | –0.9% | ±0.25% | 0.9% | % |
| VHYS Hysteresis voltage | 0.3% | 0.55% | 0.8% | % | |
| V(POR) Power-on reset voltage | VOL(max) = 0.25V, IOUT = 15µA | 0.8 | V | ||
| IDD Supply current | VDD = 2V | 6.0 | 10 | µA | |
| IDD Supply current | VDD ≥ 5V | 7.0 | 12 | µA | |
| ISENSE Input current, SENSE pin | VSENSE = 5V | 1 | 1.5 | µA | |
| VOL Low-level output voltage | VDD = 1.3V, IOUT = 0.4mA | 250 | mV |
Key Features
- Highly accurate window threshold voltages with ±0.25% (typ) and ±0.9% over the temperature range of –40°C to 125°C.
- Wide supply voltage range of 2V to 18V.
- Internal glitch immunity and noise filters to eliminate false resets.
- No external resistors required for setting overvoltage and undervoltage reset thresholds.
- Threshold adjust using the SET pin.
- Open-drain outputs for overvoltage and undervoltage indication.
- Low quiescent current of 7µA (typ).
- Internal threshold hysteresis options of 0.55% and 1.0%.
- Independent reset outputs for OV and UV pins, which can be tied together.
- SOT-6 package with a nominal size of 2.90mm × 1.60mm.
Applications
- FPGA and ASIC applications.
- DSP-based systems.
- Industrial control systems.
- Factory automation.
- Personal electronics.
- Building automation.
- Motor drives.
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 accuracy of the threshold voltages? The threshold voltages have an accuracy of ±0.25% (typ) and ±0.9% over the temperature range of –40°C to 125°C.
- Does the TPS3702 require external resistors for setting thresholds? No, the TPS3702 does not require any external resistors for setting overvoltage and undervoltage reset thresholds.
- What is the quiescent current of the TPS3702? The typical quiescent current is 7µA.
- What is the temperature range for the TPS3702? The device is qualified for use over the industrial temperature range of –40°C to 125°C.
- Can the outputs be tied together? Yes, the UV and OV outputs can be tied together due to their open-drain configuration.
- What is the maximum voltage that the outputs can be pulled up to? The outputs can be pulled up to 18V.
- What is the purpose of the SET pin? The SET pin is used to select between the two available threshold voltages designed into each device.
- Does the TPS3702 have built-in noise immunity? Yes, the device includes internal glitch immunity and noise filters to eliminate false resets.
- What package type is the TPS3702 available in? The TPS3702 is available in a SOT-6 package.
