TPS3851
- Input voltage range: VDD = 1.6V to 6.5V
- 0.8% Voltage threshold accuracy
- Low quiescent current: IDD = 10µA (typical)
- User-programmable watchdog timeout
- Open-drain outputs
- Precision undervoltage monitoring:
- Supports common rails from 1.8V to 5.0V
- 4% and 7% Undervoltage thresholds available
- 0.5% Hysteresis
- Watchdog disable feature
- Factory-programmed precision watchdog and reset timers
- Manual reset input (MR)
- Available in a small 3mm × 3mm, 8 pin VSON package
- Junction operating temperature range: –40°C to +125°C
The TPS3851 combines a precision voltage supervisor with a programmable watchdog timer. The TPS3851 comparator achieves a 0.8% accuracy(–40°C to +125°C) for the undervoltage (VITN) threshold on the VDD pin. The TPS3851 also includes accurate hysteresis on the undervoltage threshold making the device an excellent choice for use with tight tolerance systems. The supervisor RESET delay features a 15% accuracy, high-precision delay timing.
The TPS3851 includes a programmable watchdog timer for a wide variety of applications. The dedicated watchdog output (WDO) enables increased resolution to help determine the nature of fault conditions. The watchdog timeouts can be programmed either by an external capacitor, or by factory-programmed default delay settings. The watchdog can be disabled via logic pins to avoid undesired watchdog timeouts during the development process.
TPS3851 is available in a small 3.00mm × 3.00mm, 8-pin VSON package.
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기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | TPS3851 Precision Voltage Supervisor with Integrated Watchdog Timer datasheet (Rev. B) | PDF | HTML | 2025. 6. 19 | |
| 애플리케이션 노트 | Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A) | 2020. 3. 17 | |||
| 선택 가이드 | Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H) | 2020. 2. 28 | |||
| e북 | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | 2019. 6. 28 | |||
| 기술 문서 | Exploring watchdog timer applications | PDF | HTML | 2017. 2. 2 | ||
| 기술 문서 | What is a watchdog timer and why is it important? | PDF | HTML | 2017. 1. 11 |
설계 및 개발
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TPS3851EVM-780 — 윈도우 워치독을 지원하는 TPS3851 고정밀 통제기 평가 모듈
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| VSON (DRB) | 8 | Ultra Librarian |