MIC7400_15 Datasheet, PDF (65/68 Pages) Micrel Semiconductor – Configurable PMIC, Five-Channel Buck Regulator Plus One-Boost with HyperLight Load® and I2C Control

Micrel, Inc.
MIC7400
Current-Limit (STBY Mode) Registers (1E − 20’h)
This register is used to set the current limit for each DC-to-DC regulator when in standby (STBY) mode operation.
Table 28. Standby Current-Limit Register IOUT1 and IOUT2
Register Name STBY_ILIMIT_1-2_REG Standby Current-Limit Register for VOUT1 and VOUT2
Address
0x1E’h
Field
bit R/W Default Description
Standby current limit for regulator 1 from 8.6A to 1.1A in 0.5A decrements
SB1CL
3:0 R/W
1001
(4.1A)
0000 = 8.6A
0001 = 8.1A
0010 = 7.6A
0100 = 6.6A
0101 = 6.1A
0110 = 5.6A
1000 = 4.6A
1001 = 4.1A
1010 = 3.6A
1100 = 2.6 A
1101 = 2.1A
1110 = 1.6A
0011 = 7.1A
0111 = 5.1A
1011 = 3.1A
1111 = 1.1A
Standby current limit for regulator 2 from 8.6A to 1.1A in 0.5A decrements
SB2CL
7:4 R/W
1001
(4.1A)
0000 = 8.6A
0001 = 8.1A
0010 = 7.6A
0100 = 6.6A
0101 = 6.1A
0110 = 5.6A
1000 = 4.6A
1001 = 4.1A
1010 = 3.6A
1100 = 2.6 A
1101 = 2.1A
1110 = 1.6A
0011 = 7.1A
0111 = 5.1A
1011 = 3.1A
1111 = 1.1A
Table 29. Standby Current-Limit Register IOUT3 and IOUT4
Register Name STBY_ILIMIT_3-4_REG Standby Current-Limit Register for VOUT3 and VOUT4
Address
0x1F’h
Field
bit R/W Default Description
Standby current limit for regulator 3 from 8.6A to 1.1A in 0.5A decrements
SB3CL
3:0 R/W
1001
(4.1A)
0000 = 8.6A
0001 = 8.1A
0010 = 7.6A
0100 = 6.6A
0101 = 6.1A
0110 = 5.6A
1000 = 4.6A
1001 = 4.1A
1010 = 3.6A
1100 = 2.6 A
1101 = 2.1A
1110 = 1.6A
0011 = 7.1A
0111 = 5.1A
1011 = 3.1A
1111 = 1.1A
Standby current limit for regulator 4 from 8.6A to 1.1A in 0.5A decrements
SB4CL
7:4 R/W
0101
(6.1A)
0000 = 8.6A
0001 = 8.1A
0010 = 7.6A
0100 = 6.6A
0101 = 6.1A
0110 = 5.6A
1000 = 4.6A
1001 = 4.1A
1010 = 3.6A
1100 = 2.6 A
1101 = 2.1A
1110 = 1.6A
0011 = 7.1A
0111 = 5.1A
1011 = 3.1A
1111 = 1.1A
March 3, 2015
65
Revision 2.0