LM3881EVAL

TEXAS INSTRUMENTS  LM3881EVAL  评估板, 电源定序器

The is a LM3881 power sequencer evaluation board, designed to permit the designer to connect it directly to the enable or remote ON/OFF pins of power supply devices of an existing system to facilitate system sequencing. Upon enabling the device, the three open drain output flags will rise in sequential order 1-2-3. Once the part is disabled, the shutdown sequence will occur in reverse order 3-2-1. Therefore the last power supply that started up will be the first to shutdown.

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Easiest method to sequence rails

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Power up and power down control

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Input voltage range of 2.7V to 5.5V

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Small footprint VSSOP8 package

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Low quiescent current of 80µA

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Output invert feature

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Timing controlled by small value external capacitor