Texas Instruments TPS3851/TPS3851-Q1精密电压监控器
Texas Instruments TPS3851/TPS3851-Q1精密电压监控器将精密电压监控器和可编程窗口看门狗计时器结合在一起。TPS3851比较器可针对欠压 (VITN) 阈值实现0.8%的精度（-40°C至+125°C）。TPS3851还包括该欠压阈值的精确磁滞，因此非常适合与紧密公差系统配合使用。该监控器的RESET延迟具有15%精度的高精度延迟定时。TPS3851/TPS3851-Q1包含一个可用于各种应用的可编程看门狗计时器。专用看门狗输出 (WDO) 可以提高分辨率，帮助确定故障性质。看门狗超时可以通过外部电容器或工厂编程默认延迟设置进行编程。TPS3851-Q1器件符合汽车应用类AEC-Q100认证。
特性
- 0.8% Voltage threshold accuracy
- Precision undervoltage monitoring
- Supports common rails from 1.8V to 5.0V
- 4% and 7% Undervoltage thresholds available
- 0.5% Hysteresis
- Factory-programmed precision watchdog and reset timers
- ±15% Accurate WDT and RST delays
- Watchdog disable feature
- User-programmable watchdog timeout
- VDD = 1.6V to 6.5V Input voltage range
- IDD = 10µA (typ) Low quiescent current
- Open-drain outputs
- Manual Reset input (MR)
- Available in a small 3mm × 3mm, 8-Pin VSON package
- –40°C to +125°C Junction operating temperature range
应用
- Safety-critical applications
- Telematics control units
- FPGAs and ASICs
- Microcontrollers and DSPs
Datasheets
Development Tool
Texas Instruments TPS3850EVM-781/TPS3851EVM-781 监控器评估模块 (EVM)
通常采用典型配置，用于评估 TPS3850/TPS3851 的运行和性能。
发布日期: 2017-10-04
| 更新日期: 2022-06-22