Maxim MAX805LCPA

Цепь резервного питания4.65V1

Overview

Applications   Battery-Powered Computers and Controllers   Embedded Controllers   Intelligent Instruments   Automotive Systems   Critical µP Power MonitoringPortable Equipment

General DescriptionThese microprocessor (µP) supervisory circuits reduce the complexity and number of components required for power-supply monitoring and battery-control functions in µP systems. They significantly improve system reliability and accuracy compared to separate ICs or discrete components.These devices are designed for use in systems powered by 3.0V or 3.3V supplies. See the selector guide in the back of this data sheet for similar devices designed for 5V systems. The suffixes denote different reset threshold voltages: 3.075V (T), 2.925V (S), and 2.625V (R) (see the Reset Thresholdsection in the Detailed Description). All these parts are available in 8-pin DIP and SO packages.♦ RESET and RESET Outputs♦ Manual Reset Input♦ Precision Supply-Voltage Monitor♦ 200ms Reset Time Delay♦ Watchdog Timer (1.6s timeout)♦ Battery-Backup Power Switching—Battery Can Exceed VCCin Normal Operation♦ 40µA VCCSupply Current♦ 1µA Battery Supply Current♦ Voltage Monitor for Power-Fail or Low-Battery Warning♦ Guaranteed RESET Assertion to VCC= 1V♦ 8-Pin DIP and SO Packages

Features

Applications

• Transformer load monitoring equipment
• External alarm
• Display equipment
• DC stabilized power supply module
• Insulation fault location system
• Magnetic resonance imaging
• Stable power system
• Sensitive sensors
• Efficient information transmission
• Functional modules