MIC2790中文资料Supervisor with High-Accuracy, Ultra-Fast Propagation Delay and Capacitor-Programmable Reset Delay数据手册Microchip规格书

描述 Description

The MIC2790/1/3 is ideal for monitoring highly-accurate core voltages that require rapid response in the event of a fault condition. The voltage supervisor IC features a manual reset input, enable input (MIC2793 only), a capacitor-programmable reset timeout delay and both an active-low and active-high reset output.The MIC2790/1/3 monitors system voltages that are in the range of 0.4V to 5.5V, with a typical sense accuracy of 0.5% at +25°C and ±1.0% across −40°C to +125°C. The IC asserts a reset output when the sense voltage drops below the threshold or when the manual reset is pulled to a logic low. The active-low reset stays low for the duration of the reset timeout delay once the sense voltage returns to normal and the manual reset transitions to a logic high state. The reset timeout delay period is programmable from 1ms to 10s with an external capacitor.The MIC2790/1/3 operates from a low supply voltage of 1.5V to 5.5V, and is rated to operate over the temperature range of −40°C to +125°C. The MIC2790 is available in a 6-pin TSOT-23 package or a 6-pin 2mm × 2mm × 0.55mm DFN package. The MIC2791 is available in a tiny 6-pin 1.6mm × 1.6mm × 0.55mm DFN package. The MIC2793 is available in a 8-pin 2mm × 2mm × 0.55mm DFN package.

特性 Features

• 1.5V to 5.5V operating supply voltage range
• Ultra-fast propagation delay (1µs typically)
• ±1.0% threshold accuracy from −40°C to +125°C
• Monitored voltage range from 0.4V to 5.5V
• Programmable reset timeout delay (from 1ms to 10s)
• Manual reset input with an internal pull-up resistor
• Active-high enable input pin (MIC2793 only)
• The MIC2790/1/3 features multiple output options:
• Open-drain active-low (/RESET)
• Push-pull active-low (/RESET)
• Push-pull active-high (RESET)
• -40°C to +125°C junction temperature range
• 6-pin TSOT-23 (MIC2790)
• 6-pin 2mm × 2mm Thin DFN (MIC2790)
• 6-pin 1.6mm × 1.6mm Thin DFN (MIC2791)
• 8-pin 2mm × 2mm Thin DFN (MIC2793)

简介

MIC2790属于集成电路（IC）的监控器。由制造生产的MIC2790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。