TPS3703
- Input voltage range: 1.7 V to 5.5 V
- Undervoltage lockout (UVLO): 1.7 V
- Low quiescent current: 7 µA (Max)
- High threshold accuracy:
- ± 0.25% (typical)
- ± 0.7% (–40°C to +125°C)
- Fixed window threshold levels
- 50-mV steps from 500 mV to 1.3 V
- 1.5 V, 1.8 V, 2.5 V, 2.8 V, 2.9 V 3.3 V, 5 V
- Available in UV threshold only
- Window tolerance available from ±3% to ±7%
- User adjustable voltage threshold levels
- Internal glitch immunity and hysteresis
- Fixed time delay options: 50 µs, 1 ms, 5 ms, 10 ms, 20 ms, 100 ms, 200 ms
- Programmable time delay option with a single external capacitor
- Open-drain active low UV and OV monitor
- RESET voltage latching output mode
The TPS3703 device is an integrated overvoltage (OV) and undervoltage (UV) monitor or reset IC in industry’s smallest 6-pin DSE package. This highly accurate voltage supervisor is ideal for systems that operate on low-voltage supply rails and have narrow margin supply tolerances. Low threshold hysteresis prevent false reset signals when the monitored voltage supply is in its normal range of operation. Internal glitch immunity and noise filters further eliminate false resets resulting from erroneous signals.
The TPS3703 does not require any external resistors for setting overvoltage and undervoltage reset thresholds, which further optimizes overall accuracy, cost, solution size, and improves reliability for safety systems. The Capacitor Time (CT) pin is used to select between the two available reset time delays designed into each device and also to adjust the reset time delay by connecting a capacitor. A separate SENSE input pin and VDD pin allow for the redundancy sought by high-reliability systems.
This device has a low typical quiescent current specification of 4.5 µA (typical). The TPS3703 is suitable for industrial applications and applications that require accurate undervoltage and overvoltage monitoring.
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 | TPS3703 High Accuracy Over/Undervoltage Reset IC w Time Delay, Manual Reset datasheet (Rev. B) | PDF | HTML | 2020/11/13 | ||
| 功能安全資訊 | TPS3703 Functional Safety FIT Rate, FMD and Pin FMA | PDF | HTML | 2024/7/17 | |||
| 應用說明 | Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A) | 2020/3/17 |
設計與開發
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TPS3703Q1-A4120EVM — 具有重設時間延遲的 TPS3703-Q1 高準確度車窗監控器評估模組
TPS3703Q1-A4120 評估模組 (EVM) 可全面測試 TPS3703-Q1 裝置的功能。TPS3703-Q1 是一款高精度窗型監控器或重置 IC，採用 6 接腳超薄小型無引線 (WSON) 封裝。TPS3703-Q1 內建 CT 接腳，可選擇裝置內建的兩種重置時間延遲，或透過連接電容至接地來調整重置時間延遲。獨立感測輸入與 VDD 接腳可提供安全關鍵與高可靠性系統所需的備援機制。手動重置功能可用於順序控制或強制重置。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WSON (DSE) | 6 | Ultra Librarian |