MIC7401 Datasheet, PDF (52/68 Pages) Micrel Semiconductor – Configurable PMIC, Five-Channel Buck Regulator plus One-Boost with HyperLight Load®, I2C Control, and Enable

Micrel, Inc.
MIC7401
Standby Register (03’h)
This register controls standby mode operation. Global stand-by mode can either be enabled by I²C or by changing the
logic state of the STBY input pin. Global stand-by is controlled by the STBY_MODEB bit. When STBY_MODEB [6] = 1
then the regulators output voltages are set to their normal-mode output voltage settings, (05’h – 0A’h) registers. When
STBY_MODEB [6] = 0 then regulators output voltages are set to the standby-mode output voltage settings, (0B’h – 10’h)
registers. If STBY [1-6] register is set to logic “0’, then the output is shut off in standby mode.
The global power-good flag is asserted when an output is disabled unless the power-good mask bit (PGOOD_MASK[x]) is
set to 1.
Table 8. Standby Register
Register Name
STBY_CTRL_REG
Address
Field
bit R/W Default
STBY1
0 R/W
1
STBY2
1 R/W
1
STBY3
2 R/W
1
STBY4
3 R/W
1
STBY5
4 R/W
1
STBY6
5 R/W
1
STBY_MODEB 6 R/W
1
Reserved
7 R/W
0
Standby Register
0x03’h
Description
Regulator 1 Standby Voltage Control
0 = OFF
Regulator 2 Standby Voltage Control
0 = OFF
Regulator 3 Standby Voltage Control
0 = OFF
Regulator 4 Standby Voltage Control
0 = OFF
Regulator 5 Standby Voltage Control
0 = OFF
Regulator 6 Standby Voltage Control
0 = OFF
Global Standby Control
0 = All regulators in Standby Mode
1 = All regulators in Normal Mode
Not Used
1 = ON
1 = ON
1 = ON
1 = ON
1 = ON
1 = ON
March 16, 2015
52
Revision 1.0