MIC7400_15 Datasheet, PDF (36/68 Pages) Micrel Semiconductor – Configurable PMIC, Five-Channel Buck Regulator Plus One-Boost with HyperLight Load® and I2C Control

Micrel, Inc.
Standby (STBY) Pin (Wake-Up)
An I²C write command to the STBY_CTRL_REG register
or the STBY pin can be used to set the MIC7400 into
stand-by mode. The standby (STBY) pin provides a
hardware-specific manner in which to wake-up from
stand-by mode and go into normal mode. Figure 20
shows the STBY pin operation. A low-to-high transition
on the STBY pin switches the output from stand-by mode
to normal mode.
MIC7400
There is a 100µs STBY deglitch time to eliminate
nuisance tripping, then all the regulators are enabled at
the same time and ramp up with their programmed ramp
rates.
March 3, 2015
Figure 20. MIC7400 STBY Function (DEFAULT)
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Revision 2.0