MIC2776数据手册集成电路（IC）的监控器规格书PDF

描述 Description

The MIC2776 is a power supply supervisor which provides under-voltage monitoring and power-on reset generation in a compact 5-pin SOT package. Features include an adjustable under-voltage detector, a delay-generator, a manual reset input, and a choice of active-high, active-low, or open-drain active-low reset output. The user-adjustable monitoring input is compared against a 300mV reference. This low reference voltage allows monitoring voltages lower than those supported by previous supervisor ICs.The reset output is asserted for no less than 140ms at poweron and any time the input voltage drops below the reference voltage. It remains asserted for the timeout period after the input voltage subsequently rises back above the threshold boundary. A reset can be generated at any time by asserting the manual reset input, /MR. The reset output will remain active at least 140ms after the release of /MR. The /MR input can also be used to daisy-chain the MIC2776 onto existing power monitoring circuitry or other supervisors. Hysteresis is included to prevent chattering due to noise. Typical supply current is a low 3.0µA.

特性 Features

• User-adjustable input can monitor supplies as low as 0.3V
• ±1.5% threshold accuracy
• Separate VDD input
• Generates power-on reset pulse (140ms min.)
• Manual reset input
• Choice of active-low, open-drain or active high or active low complementary outputs
• Inputs can be pulled above VDD (7V abs. max.)
• Open-drain output can be pulled above VDD (7V abs. max.)
• Ultra-low supply current, 3.0µA typical
• Rejects brief input transients
• IttyBitty® SOT-23-5 package

简介

MIC2776属于集成电路（IC）的监控器。由制造生产的MIC2776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。