MIC7401 Datasheet, PDF (53/68 Pages) Micrel Semiconductor – Configurable PMIC, Five-Channel Buck Regulator plus One-Boost with HyperLight Load®, I2C Control, and Enable

Micrel, Inc.
MIC7401
Enable/Disable Register (04’h)
This register controls the enable/disable of each DC-to-DC regulators. When EN(n) bit transitions from 0 to 1 then the
regulator(n) is enabled with Soft-Start unless the STBY_MODEB register bit in register 03’h is set to logic 0.
The configuration save bit “SAVE1” should be cleared by customer before saving configuration data to EEPROM. This bit
is used during power-up to indicate via the Status register (00’h) that configuration data has previously been stored.
Table 9. Enable Register
Register Name
EN_REG
Address
Field
bit R/W Default
EN1
0 R/W
1
EN2
1 R/W
1
EN3
2 R/W
1
EN4
3 R/W
1
EN5
4 R/W
1
EN6
Reserved
5 R/W
1
6 R/W
0
SAVE1
7 R/W
0
Enable Register
0x04’h
Description
Regulator 1 ON/OFF Control bit
0 = OFF
1 = ON
Regulator 2 ON/OFF Control bit
0 = OFF
1 = ON
Regulator 3 ON/OFF Control
0 = OFF
1 = ON
Regulator 4 ON/OFF Control
0 = OFF
1 = ON
Regulator 5 ON/OFF Control
0 = OFF
1 = ON
Regulator 6 ON/OFF Control
0 = OFF
1 = ON
Not Used
Save Configuration
0 = Configuration Saved to EEPROM
1 = Not Configuration Saved to EEPROM
March 16, 2015
53
Revision 1.0