MAX795S中文资料3.0V/3.3V可调、微处理器监控电路数据手册ADI规格书

描述 Description

The MAX793/MAX794/MAX795 microprocessor (µP) supervisory circuits monitor and control the activities of +3.0V/+3.3V µPs by providing backup-battery switchover, among other features such as low-line indication, µP reset, write protection for CMOS RAM, and a watchdog (see the Selector Guide in the full data sheet). The backup-battery voltage can exceed VCC, permitting the use of 3.6V lithium batteries in systems using 3.0V to 3.3V for VCC.
The MAX793/MAX795 offer a choice of reset threshold voltage range (denoted by suffix letter): 3.00V to 3.15V (T), 2.85V to 3.00V (S), and 2.55V to 2.70V (R). The MAX794's reset threshold is set externally with a resistor divider. The MAX793/MAX794 are available in 16-pin DIP and narrow SO packages, and the MAX795 comes in 8-pin DIP and SO packages.

特性 Features

MAX793/MAX794/MAX795
• Precision Supply-Voltage Monitor:
• Fixed Reset Trip Voltage (MAX793/MAX795)
• Adjustable Reset Trip Voltage (MAX794)
• Guaranteed Reset Assertion to VCC = 1V
• Backup-Battery Power Switching—Battery Voltage Can Exceed VCC
• On-Board Gating of Chip-Enable Signals—7ns Max Propagation DelayMAX793/MAX794 Only
• Battery Freshness Seal
• Battery OK Output (MAX793)
• Uncommitted Voltage Monitor for Power-Fail or Low-Battery Warning
• Independent Watchdog Timer (1.6s timeout)
• Manual Reset Input

应用 Application

• 电池供电计算机/控制器
• 精确的µP电源监控
• 嵌入式控制器
• 智能控制器
• 便携式设备

简介

MAX795S属于集成电路（IC）的监控器。由制造生产的MAX795S监控器PMIC 监控器用于监视和/或控制电路中的电压轨，能够连接微控制器以维持一定的功率限值。监控器类型包括电池备用电路、监控器、多电压监控器、电源监控器、稳压器/监控器、复位计时器、定序器、简单复位/上电复位、智能开/关控制器、系统管理器、电压检测器和看门狗电路。