| Number of supplies monitored | 2, 3, 4 |
| Threshold voltage 1 (Typ) (V) | 3.3, 1.8, 1.15 |
| Features | Push-button, Reset time delay, Separate VDD & sense, Undervoltage and overvoltage monitor |
| Reset threshold accuracy (%) | 1 |
| Output driver type/reset output | Active-low, Open-drain |
| Time delay (ms) | 0.02, 1, 5, 10, 20, 35, 50, 100, 150, 200, 400, 800, 1200 |
| TI functional safety category | Functional Safety-Compliant |
| Rating | Automotive |
| Watchdog timer WDI (sec) | None |
| Operating temperature range (C) | -40 to 125 |
- 符合面向汽車應用的 AEC-Q100 標準
- 器件溫度等級 1：–40°C 至 +125°C 的工作環境溫度范圍
- 器件 HBM ESD 分類等級 2
- 器件 CDM ESD 分類等級 C7B
- 專為高性能和安全性而設計：
- 輸入電流（4 通道）：IDD = 15μA（上限）
- 高閾值精度：典型值為 ±0.25%，最大值為 ±1%
- 內置精密遲滯： VHYS (VIT > 800mV) = 0.75%（典型值）
- 符合功能安全標準
- 專為功能安全應用開發
- 有助于進行 ISO 26262 系統設計的文檔
- 系統可滿足 ASIL D 級要求
- 硬件可滿足 ASIL A 要求
- 自檢 - 手動設置
- 適用于多種應用：
- 輸入電壓范圍：VDD = 1.7V 至 6V
- 四通道、三通道、雙通道或單通道電壓監控器
- 每個通道高度可配置
- 窗口（OV、UV）：僅 UV、僅 OV 選項
- 窗口公差：±3% 至 ±11%
- 高閾值分辨率：VIT ≤ 0.8V：20mV 階躍 VIT > 0.8V：0.5% 或 20mV 階躍二者中的較小者
- 所有通道上的按鈕監視器
- 復位延時時間 (tD)：固定延時時間選項
- Options: 23 個固定時間選項，范圍為 20μs（下限）至 1200ms（上限）
- 多輸出拓撲、封裝類型：
- TPS3704xxxO-Q1：開漏，低電平有效 (RESET)
- TPS3704xxxL-Q1：推挽，低電平有效 (RESET)
- TPS3704xxxH-Q1：推挽，高電平有效 (RESET)
The TPS3704-Q1 is a low-power precision window voltage supervisor that can be configured as a quad, triple, dual, or single channel. Each channel has a threshold accuracy of ±1% in a compact SOT-23 package offering a small solution size. The TPS3704-Q1 includes a very accurate threshold detection, with high resolution, that is ideal for systems that operate on low-voltage supply rails and have narrow margin supply tolerances. Built-in low threshold hysteresis and a fixed reset delay (tD options from 20 μs to 1200 ms) prevent false reset signals when monitoring multiple voltage rails.
The TPS3704-Q1 does not require any external resistors for setting the over- and undervoltage reset thresholds, which further optimizes overall high accuracy, cost, solution size, and improves reliability for safety systems. The TPS3704-Q1 functional safety compliance elevates automotive design that can meet ISO 26262 requirements and automotive safety integrity levels. Separate VDD and SENSEx pins allow monitoring of rail voltages other than VDD or can be used as a push-button input. Optional use of external resistors are supported by the SENSEx pin(s). Each channel on the TPS3704-Q1 can be customized to its own over- and undervoltage window detection with an upper and lower threshold tolerance that can be symmetric or asymmetric. The TPS3704-Q1 can monitor up to four channels while maintaining an ultra-low IQ current of 5.5 μA (typical) and operates over a temperature range of –40°C to +125°C (TA).
