TI TPS3897PDRYR

简单复位/加电复位可调节/可选择1

Overview

The TPS3895, TPS3896, TPS3897, and TPS3898 devices (TPS389x) are a family of very small supervisory circuits that monitor voltages greater than 500 mV with a 0.25% (typical) threshold accuracy and offer adjustable delay time using external capacitors. The TPS389x family also has a logic enable pin (ENABLE or ENABLE) to power on and off the output. With the TPS3895, for example, when the input voltage pin (SENSE) rises above the threshold, and the ENABLE pin is high, then the output pin (SENSE_OUT) goes high after the capacitor-adjustable delay time. When SENSE falls below the threshold or ENABLE is low, then SENSE_OUT goes low.

All devices operate from 1.7 V to 6.5 V and have a typical quiescent current of 6 μA with an open-drain output rated at 18 V. The TPS389x is available in an ultra-small USON package and is fully specified over the temperature range of TJ = –40°C to 125°C.

Features

Tape & Reel (TR) Package
Simple Reset/Power-On Reset type
Minimum supply voltage of 1.7V
6μA operating supply current

1 Number of Voltages Monitored

Applications

There are a lot of Texas Instruments
TPS3897PDRYR Voltage Supervisors applications.

• Power distribution systems of infant care room
• Power distribution systems of ICU
• Power distribution systems of CCU
• emergency room
• Medical-specific isolation transformer
• Medical-specific insulation monitor
• Transformer load monitoring equipment
• External alarm
• Display equipment
• DC stabilized power supply module