| 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 |
- 符合面向汽车应用的 AEC-Q100 标准
- 器件温度等级 1：–40°C 至 +125°C 的工作环境温度范围
- 器件 HBM ESD 分类等级 2
- 器件 CDM ESD 分类等级 C7B
- 专为高性能和安全性而设计：
- 输入电流（4 通道）：IDD = 15μA（上限）
- 高阈值精度：典型值为 ±0.25%，最大值为 ±1%
- 内置精密迟滞： VHYS (VIT > 800mV) = 0.75%（典型值）
- 符合功能安全标准
- 专为功能安全应用开发
- 有助于进行 ISO 26262 系统设计的文档
- 系统可满足 ASIL D 级要求
- 硬件可满足 ASIL A 要求
- 自检 - 手动设置
- 适用于多种应用：
- 输入电压范围：VDD = 1.7V 至 6V
- 四通道、三通道、双通道或单通道电压监控器
- 每个通道高度可配置
- 窗口（OV、UV）：仅 UV、仅 OV 选项
- 窗口公差：±3% 至 ±11%
- 高阈值分辨率：VIT ≤ 0.8V：20mV 阶跃 VIT > 0.8V：0.5% 或 20mV 阶跃二者中的较小者
- 所有通道上的按钮监视器
- 复位延时时间 (tD)：固定延时时间选项
- Options: 23 个固定时间选项，范围为 20μs（下限）至 1200ms（上限）
- 多输出拓扑、封装类型：
- TPS3704xxxO-Q1：开漏，低电平有效 (RESET)
- TPS3704xxxL-Q1：推挽，低电平有效 (RESET)
- TPS3704xxxH-Q1：推挽，高电平有效 (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).
