MIC7400_15 Datasheet, PDF (63/68 Pages) Micrel Semiconductor – Configurable PMIC, Five-Channel Buck Regulator Plus One-Boost with HyperLight Load® and I2C Control

Micrel, Inc.
Table 24. Soft-Start Register OUT5 and OUT6
Register Name
SS5-6_REG
Soft-Start Register for VOUT5 and VOUT6
Address
0x1A’h
Field
bit R/W Default Description
REG5SS
2:0 R/W
001
(8µs)
OUT5 Soft-Start Time
See Table 19 for Soft-Start Settings
REG6SS
5:3 R/W
010
(16µs)
OUT6 Soft-Start Time
See Table 19 for Soft-Start Settings
6 R/W
0
Reserved
7 R/W
0
Reserved
MIC7400
Current-Limit (Normal Mode) Registers (1B’h − 1D’h)
This register is use to set the current limit for each DC-to-DC regulator in normal mode operation.
Table 25. Current-Limit Register IOUT1 and IOUT2
Register Name
ILIMIT_1-2_REG
Current-Limit Register for VOUT1 and VOUT2
Address
0x1B’h
Field
bit R/W Default Description
Normal current-limit for regulator 1 from 8.6A to 1.1A in 0.5A decrements
REG1CL
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
Normal current-limit for regulator 2 from 8.6A to 1.1A in 0.5A decrements
REG2CL
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
March 3, 2015
63
Revision 2.0