TPS3823
- Power-on reset generator with a fixed delay time of 200ms (TPS3823, TPS3824, TPS3825, and TPS3828) or 25ms (TPS3820)
- Manual reset input (TPS3820, TPS3823, TPS3825, and TPS3828)
- Reset output available in active-low (TPS3820, TPS3823, TPS3824, and TPS3825), active-high (TPS3824 and TPS3825), and open drain (TPS3828)
- Supply voltage supervision range: 2.5V, 3V, 3.3V, 5V
- Watchdog timer (TPS3820, TPS3823, TPS3824, and TPS3828)
- Supply current of 15µA (typical)
- 5-pin SOT-23 package
- Temperature range: −40°C to 85°C (−40°C to 125°C for TPS3823A-33)
The TPS382x family of supervisors provide circuit initialization and timing supervision, primarily for DSP and processor-based systems. During power on, RESET asserts when the supply voltage VDD becomes greater than 1.1V. Thereafter, the supply voltage supervisor monitors VDD and keeps RESET active low as long as VDD remains less than the threshold voltage, VIT−. An internal timer delays the return of the output to the inactive state (high) to make sure proper system reset. The delay time, td, starts after VDD has risen above the threshold voltage (VIT− + VHYS). When the supply voltage drops below the threshold voltage VIT−, the output becomes active (low) again. No external components are required. All the devices of this family have a fixed-sense threshold voltage, VIT–, set by an internal voltage divider. The TPS382x family also offers watchdog time out options of 200ms (TPS3820) and 1.6s (TPS3823, TPS3824, and TPS3828).
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針腳對針腳的功能與所比較的裝置相同。
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 | TPS382x Voltage Monitor With Watchdog Timer datasheet (Rev. O) | PDF | HTML | 2025/3/20 | ||
| 應用說明 | Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A) | 2020/3/17 | ||||
| 選擇指南 | Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H) | 2020/2/28 | ||||
| 電子書 | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | 2019/6/28 | ||||
| Application brief | Latching a Voltage Supervisor (Reset IC) (Rev. A) | 2019/4/5 | ||||
| 技術文章 | Improve circuit breaker leakage current response with a voltage supervisor | PDF | HTML | 2019/1/10 | |||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 | ||||
| 應用說明 | Disabling the Watchdog Timer for TI's Family of Supervisors | 2003/10/30 | ||||
| 應用說明 | Power Supply Sequencing Solutions for Dual Supply Voltage DSPs (Rev. A) | 2000/7/5 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
TPS382-Q1EVM — 具有整合式看門狗的 TPS382x-Q1 電壓監控器評估模組
TIDA-010253 — 適用於儲能系統的電池控制單元參考設計
此參考設計為高電壓鋰離子 (Li-ion)、磷酸鐵鋰 (LiFePO4) 電池架的中央控制器。此設計提供適用於高電壓繼電器的驅動電路、通訊介面 (包括 RS-485、控制器區域網路 (CAN)、菊鍊與乙太網路)、濕度感測器的可擴充介面、高電壓類比轉數位轉換器 (ADC)，以及電流感測器。
此設計使用高性能微控制器進行開發和測試應用。這些功能讓此參考設計適用於高容量電池架應用的中央控制器。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOT-23 (DBV) | 5 | Ultra Librarian |