Texas Instruments TPS3701 36V 窗口比较器

德州仪器 TPS3701 36V 窗口比较器是宽幅供电电压窗口比较器，可在 1.8V 至 36V 的电压下工作。该器件包括两个精密的比较器，内部电压基准为 400mV，还有两个额定值为 25V 的开漏输出（OUTA 和 OUTB），实现了过压和欠压检测。将 TPS3701 用作窗口比较器或两个独立的电压监控器；采用外部电阻器来设置监控电压。当 INA 引脚上的电压降到负阈值以下时，OUTA 被拉低，而当电压恢复到正阈值以上时，OUTA 被拉高。当 INA 引脚上的电压升到正阈值以上时，OUTA 被拉低，而当电压恢复到负阈值以下时，OUTA 被拉高。TPS3701 中的两种比较器均带有可起到噪声抑制作用的内置滞回功能，从而确保稳定的输出操作，防止发生误触发。

OUTA is driven low when the voltage at the INA pin drops below the negative threshold, and goes high when the voltage returns above the positive threshold. OUTB is driven low when the voltage at the INB pin rises above the positive threshold, and goes high when the voltage drops below the negative threshold. Both comparators in the TPS3701 include built-in hysteresis for noise rejection, thereby ensuring stable output operation without false triggering.

特性

1.8V to 36V Wide supply voltage range
Adjustable threshold down to 400mV
Open-drain outputs for over- and undervoltage detection
µA (typ) Low quiescent current
High threshold accuracy

0.75% Over temperature
0.25% (typ)
5.5mV (typ) Internal hysteresis
Temperature range of -40°C to 125°C

应用

Industrial control systems
Embedded computing modules
DSPs, Microcontrollers, and Microprocessors

Notebook and Desktop computers
Portable- and Battery-Powered products
FPGA and ASIC systems

TPS3700EVM-114 EVM

Texas Instruments TPS3700EVM-114 Evaluation Module (EVM) helps designers evaluate the performance of the TPS3700 High Voltage (18V), Window Comparator with Over- and Undervoltage Detection. The EVM contains an IC for over- and under-voltage monitoring and header connectors for easy connection to external test and application circuitry.