TPS3430
- Factory-programmed precision watchdog timers:
- ±2.5% Accurate watchdog timeout and watchdog reset delays typical at 25°C
- Watchdog disable feature
- User-programmable watchdog timeout
- User-programmable watchdog reset delay
- Input voltage range: VDD = 1.6 V to 6.5 V
- Low supply current: IDD = 10 µA (typical)
- Open-drain output
- Small 3-mm × 3-mm, 10-Pin VSON package
- Junction operating temperature range: –40°C to +125°C
The TPS3430 is a standalone window watchdog timer with programmable watchdog window and programmable watchdog reset delay for a wide variety of applications. The TPS3430 window watchdog achieves 2.5% timing accuracy (typical at 25°C) and the watchdog output ( WDO) reset delay can be set by factory-programmed default delay settings, or programmed by an external capacitor. The watchdog can be disabled via the SET pins to avoid undesired watchdog timeouts during the development process or during power on.
The TPS3430 is available in a small 3.00-mm × 3.00-mm, 10-pin VSON package.
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技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | TPS3430 Window Watchdog Timer with Programmable Reset Delay datasheet (Rev. A) | PDF | HTML | 2021/10/1 | ||
| 應用說明 | Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A) | 2020/3/17 | ||||
| 應用說明 | Open Load Detection and Limp Home Function in BCM | 2019/8/30 | ||||
| 電子書 | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | 2019/6/28 | ||||
| 技術文章 | Voltage supervisor requirements for e-meter applications | PDF | HTML | 2019/1/18 | |||
| 技術文章 | Improve circuit breaker leakage current response with a voltage supervisor | PDF | HTML | 2019/1/10 | |||
| Application brief | Latching a Watchdog Timer | 2018/8/26 |
設計與開發
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TPS3430EVM — 具有可編程重設延遲功能的 TPS3430 窗口監視計時器
TPS3430 評估模組 (EVM) 是評估 TP3430 裝置的平台。TPS3430 是一款獨立的視窗監視定時器，具有可編程 視窗監視 和可編程重設延遲，適用於各種應用。此裝置可用來監控 MCU 的監視輸入，如果可編程監視視窗中沒有脈衝抵達時，會觸發監視輸出。藉由設定 SET0 和 SET1 接腳，以及變更 CRST 和 CWD 的電容器，可以編程此裝置。
SNVC223 — TPS343x Timing Calculator
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VSON (DRC) | 10 | Ultra Librarian |