Overview
The TPS3851G33SQDRBRQ1 is a high-accuracy voltage supervisor with an integrated watchdog timer, designed and manufactured by Texas Instruments. This device is AEC-Q100 qualified, ensuring it meets stringent automotive standards. It combines a precision voltage supervisor with a programmable watchdog timer, making it ideal for use in tight tolerance systems where accurate voltage monitoring is crucial.
The device operates over a wide ambient temperature range of –40°C to 125°C, ensuring reliability in various environmental conditions. Its precision undervoltage supervisor achieves a 0.8% accuracy over the specified temperature range, and it includes accurate hysteresis on the undervoltage threshold to prevent false resets.
Key Specifications
| Specification | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | TPS3851G33SQDRBRQ1 |
| Package Type | 3.00-mm × 3.00-mm, 8-pin VSON |
| Operating Temperature Range | –40°C to 125°C |
| Voltage Accuracy | 0.8% (–40°C to +125°C) |
| Watchdog Timer | Programmable via external capacitor or factory-programmed default delay settings |
| RESET Delay Accuracy | 15% |
| Supply Voltage Range | 1.6 V to 6.5 V |
Key Features
- Precision Voltage Supervisor: Achieves 0.8% accuracy over the specified temperature range for the undervoltage threshold.
- Integrated Watchdog Timer: Programmable via an external capacitor or factory-programmed default delay settings.
- Accurate Hysteresis: Ensures reliable operation in tight tolerance systems by preventing false resets.
- Dedicated Watchdog Output (WDO): Provides increased resolution to help determine the nature of fault conditions.
- Small Form Factor: Available in a compact 3.00-mm × 3.00-mm, 8-pin VSON package.
- AEC-Q100 Qualified: Meets automotive standards for reliability and performance.
Applications
The TPS3851G33SQDRBRQ1 is designed for use in various automotive and industrial applications where high-accuracy voltage supervision and watchdog functionality are essential. These include:
- Automotive systems: Engine control units, safety systems, and other critical automotive electronics.
- Industrial control systems: Monitoring and controlling voltage levels in industrial automation and control systems.
- Medical devices: Ensuring reliable operation in medical equipment that requires precise voltage monitoring.
- Aerospace and defense: Applications requiring high reliability and precision voltage supervision.
Q & A
- What is the operating temperature range of the TPS3851G33SQDRBRQ1?
The operating temperature range is –40°C to 125°C.
- What is the accuracy of the undervoltage threshold?
The undervoltage threshold achieves a 0.8% accuracy over the specified temperature range.
- How is the watchdog timer programmed?
The watchdog timer can be programmed via an external capacitor or using factory-programmed default delay settings.
- What is the purpose of the dedicated watchdog output (WDO)?
The WDO provides increased resolution to help determine the nature of fault conditions.
- What package type is the TPS3851G33SQDRBRQ1 available in?
The device is available in a 3.00-mm × 3.00-mm, 8-pin VSON package.
- Is the TPS3851G33SQDRBRQ1 AEC-Q100 qualified?
Yes, the device is AEC-Q100 qualified, meeting automotive standards for reliability and performance.
- What is the supply voltage range for the TPS3851G33SQDRBRQ1?
The supply voltage range is 1.6 V to 6.5 V.
- Can the watchdog timer be disabled?
Yes, the watchdog timer can be disabled via logic pins to avoid undesired watchdog timeouts during the development process.
- What are some typical applications for the TPS3851G33SQDRBRQ1?
Typical applications include automotive systems, industrial control systems, medical devices, and aerospace and defense applications.
- Where can I find detailed specifications and datasheets for the TPS3851G33SQDRBRQ1?
Detailed specifications and datasheets can be found on the Texas Instruments website and other authorized distributors like Digi-Key, Mouser, and Arrow Electronics.
