TI LM3881MME/NOPB

Секвенсор источников питания2,7 В ~ 5,5 В80 мкА

Overview

The LM3881MME/NOPB is a simple Power Sequencer with programmable time delay. The power sequencer offers the easiest method to control power-up and power-down of multiple power supplies (switching or linear regulators). By staggering the start-up sequence, it is possible to avoid latch conditions or large inrush currents that can affect the reliability of the system. The simple sequencer contains a precision enable pin and three open-drain output flags. When the LM3881MME/NOPB is enabled, the three output flags will sequentially release, after individual time delays, thus permitting the connected power supplies to start-up. The output flags will follow a reverse sequence during power-down to avoid latch conditions. Time delays are defined using an external capacitor and the output flag states can be inverted by the user.

Features

Applications

• Projector electric hanger lift
• Multimedia classroom
• Multi-purposed meeting room
• Command and control center
• Smart home
• User-available push-button control panel
• Computer monitor
• Touch screen
• Remote control
• Projector