What is sequence control?

These days, many systems using an MCU, FPGA, ASIC, etc. have a complicated circuit structure which contains multiple power management rails.
To start up and stop these systems safely, the order and the timing of switching the multiple power lines ON/OFF must be determined in advance.
This operation control of multiple power rails is called sequence control.

While sequence control is usually conducted by using a programmable logic controller, some of power management ICs have a function to perform it.
We have a lineup of power management ICs capable of controlling the start-up and shutdown sequences by multiple functions like a soft start, a delay, an auto discharge, and so on.
For example, the R1290 series has one suitable for LCD panels, and the R1283 for CCD sensors.

Suitable Sequence Control for LCD Panel

Suitable Sequence Control for CCD Sensor

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