TPS3825
- 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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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 | ||||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 | ||||
| 測試報告 | TIDA-00609 Test Results | 2015/6/25 | ||||
| 使用指南 | Easy Demo User Manual | 2015/6/22 | ||||
| 測試報告 | TIDA-00089 Test Results | 2013/12/13 | ||||
| 使用指南 | Value Soundbar Reference Design Kit Development Guide (Rev. A) | 2012/2/3 | ||||
| 應用說明 | Disabling the Watchdog Timer for TI's Family of Supervisors | 2003/10/30 |
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-00089 — 適用於立體聲道或 2.1 應用的超值條形音箱參考設計套件
This is a Value Soundbar reference design kit for Stereo or 2.1 applications, which can easily be reapplied for PC speakers, or MP3 Docks. This is a complete reference design, including all programming hardware required, so you can get to working within minutes, a prototype within hours, and (...)
TIDA-00609 — 自我啟動音訊系統
此參考設計的目的是提供可作為音訊系統參考的硬體和軟體工具。新版本的 PurePath™ 控制台主機板 (Rev F) 新增了獨立的自我啟動功能，可使用任何與此平台相容的評估模組 (EVM) 製作出引人入勝的演示。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOT-23 (DBV) | 5 | Ultra Librarian |