LM3880 Datasheet (National Semiconductor)

LM3880, Power Sequencer

The LM3880 Power Sequencer offers the easiest method to control power up and power down of multiple power supplies (switchers or linear regulators).

By staggering the startup sequence, it is possible to avoid latch conditions or large in-rush currents that can affect the reliability of the system.

LM3880 Features

* n n n n n n n Easiest method to sequence rails Power up and power down control Input voltage range of 2.7V to 5.5V Small footprint SOT23-6 Low quiescent current of 20 µA Standard timing options available Customization of timing and sequence available through factory programmability Applications n M