Overview
The TPS3703A7330DSERQ1 is an integrated overvoltage (OV) and undervoltage (UV) monitor or reset IC produced by Texas Instruments. This device is designed for systems that operate on low-voltage supply rails and have narrow margin supply tolerances. It is particularly suited for automotive applications and is qualified to AEC-Q100 Grade 1, ensuring reliability and performance over a wide temperature range of –40°C to +125°C.
The TPS3703A7330DSERQ1 features high threshold accuracy, internal glitch immunity, and hysteresis to prevent false reset signals. It does not require external resistors for setting overvoltage and undervoltage reset thresholds, optimizing accuracy, cost, and solution size.
Key Specifications
| Parameter | Min | Nom | Max | Unit |
|---|---|---|---|---|
| VDD Supply Pin Voltage | 1.7 | 5.5 | V | |
| VSENSE Input Pin Voltage | 0 | 5.5 | V | |
| Undervoltage Lockout (UVLO) | 1.7 | V | ||
| Quiescent Current | 4.5 | 7 | µA | |
| Threshold Accuracy (Typical) | ±0.25% | |||
| Threshold Accuracy (–40°C to +125°C) | ±0.7% | |||
| Fixed Time Delay Options | 50 µs, 1 ms, 5 ms, 10 ms, 20 ms, 100 ms, 200 ms | |||
| Programmable Time Delay | With a single external capacitor | |||
| Junction Temperature | –40 | 125 | °C |
Key Features
- AEC-Q100 qualified for automotive applications with a temperature grade 1: –40°C to +125°C.
- Functional Safety-Capable with documentation available to aid in functional safety system design.
- High threshold accuracy: ±0.25% (typical) and ±0.7% (–40°C to +125°C).
- Fixed window threshold levels with options from 500 mV to 5 V in 50-mV steps and additional fixed levels.
- User-adjustable voltage threshold levels.
- Internal glitch immunity and hysteresis to prevent false reset signals.
- Fixed and programmable time delay options.
- Open-drain active low UV and OV monitor.
- RESET voltage latching output mode.
- No external resistors required for setting overvoltage and undervoltage reset thresholds.
- Low quiescent current: 4.5 µA (typical).
Applications
- Advanced Driver Assistance System (ADAS).
- ADAS domain controller.
- Automotive infotainment and cluster.
- Digital cockpit.
- Hybrid Electric Vehicle (HEV) and Electric Vehicle (EV) systems.
Q & A
- What is the operating temperature range of the TPS3703A7330DSERQ1?
The operating temperature range is –40°C to +125°C.
- What is the input voltage range for the TPS3703A7330DSERQ1?
The input voltage range is 1.7 V to 5.5 V.
- What is the quiescent current of the TPS3703A7330DSERQ1?
The typical quiescent current is 4.5 µA, with a maximum of 7 µA.
- Does the TPS3703A7330DSERQ1 require external resistors for setting thresholds?
No, it does not require external resistors for setting overvoltage and undervoltage reset thresholds.
- What are the fixed time delay options available for the TPS3703A7330DSERQ1?
The fixed time delay options include 50 µs, 1 ms, 5 ms, 10 ms, 20 ms, 100 ms, and 200 ms.
- How can the time delay be programmed in the TPS3703A7330DSERQ1?
The time delay can be programmed using a single external capacitor connected to the CT pin.
- What is the threshold accuracy of the TPS3703A7330DSERQ1?
The threshold accuracy is ±0.25% (typical) and ±0.7% across the temperature range of –40°C to +125°C.
- What are the key applications of the TPS3703A7330DSERQ1?
Key applications include ADAS, ADAS domain controllers, automotive infotainment and cluster, digital cockpit, and HEV/EV systems.
- Is the TPS3703A7330DSERQ1 qualified for automotive use?
Yes, it is AEC-Q100 qualified for automotive applications.
- What is the package type of the TPS3703A7330DSERQ1?
The device is available in a 6-pin WSON (DSE) package.
