描述 Description

The CAT803 is a uP supervisory circuits that monitor power supplies in digital systems. The CAT803 is a direct replacement for the MAX803 in applications operating over the industrial temperature range.This device generates a reset signal, which is asserted while the power supply voltage is below a preset threshold level and for at least 140 ms after the power supply level has risen above that level. The underlying floating gate technology, Analog EEPROM used by ON Semiconductor, makes it possible to offer any custom reset threshold value. Seven industry standard threshold levels are offered to support +5.0 V, +3.3 V, +3.0 V and +2.5 V systems. The CAT803 has an open-drain RESET output (active LOW). The CAT803 requires a pull-up resistor on the reset output.Fast transients on the power supply are ignored and the output is guaranteed to be in the correct state at Vcc levels as low as 1.0 V.The CAT803 is available in both the compact 3-pin SOT-23 and SC70 packages.

特性 Features

? Precision monitoring of +5.0V (-5%, -10%, -20%), +3.3V (-5%, -10%), +3.0V (-10%) and +2.5V (-5%) power supplies
? Offered in three output configurations: - CAT803: Open-Drain Active LOW reset
? Direct replacements for the MAX803 in applications operating over the industrial temperature range
? Reset valid down to VCC = 1.0 V
? 6 μA power supply current
? Power supply transient immunity
? Industrial temperature range: -40?C to +85?C
? Available in RoHS-compliant SOT-23 and SC70 packages
? These Devices are Pb Free and are RoHS Compliant

應用 Application

? Computers
? Servers
? Laptops
? Cable modems
? Wireless communications
? Embedded control systems
? White goods
? Power meters
? Intelligent instruments
? PDAs and handheld equipment

簡介

CAT803屬于集成電路（IC）的監(jiān)控器。由制造生產的CAT803監(jiān)控器PMIC 監(jiān)控器用于監(jiān)視和/或控制電路中的電壓軌，能夠連接微控制器以維持一定的功率限值。監(jiān)控器類型包括電池備用電路、監(jiān)控器、多電壓監(jiān)控器、電源監(jiān)控器、穩(wěn)壓器/監(jiān)控器、復位計時器、定序器、簡單復位/上電復位、智能開/關控制器、系統(tǒng)管理器、電壓檢測器和看門狗電路。