Datasheet

LTC3589/LTC3589-1/
LTC3589-2
41
3589ff
For more information www.linear.com/3589
Table 18. LTC3589 Read-Only Status Register Table
REG NAME B[7] B[6] B[5] B[4] B[3] B[2] B[1] B[0]
0x02 IRQSTAT Thermal
Limit Hard
Shutdown
Occurred
Near Thermal
Limit
Undervoltage
Hard
Shutdown
Occurred
Near Undervoltage
Limit
PGOOD
Timeout Hard
Shutdown
Occurred
Unused Unused Unused
0x13 PGSTAT LDO4 Status:
0 = V
OUT
Low
1 = V
OUT
Good
LDO3 Status:
0 = V
OUT
Low
1 = V
OUT
Good
LDO2 Status:
0 = V
OUT
Low
1 = V
OUT
Good
Buck_Boost
Status:
0 = V
OUT
Low
1 = V
OUT
Good
Step-Down
Switching
Regulator 3
Status:
0 = V
OUT
Low
1 = V
OUT
Good
Step-Down
Switching
Regulator 2
Status:
0 = V
OUT
Low
1 = V
OUT
Good
Step-Down
Switching
Regulator 1
Status:
0 = V
OUT
Low
1 = V
OUT
Good
LDO1 Status:
0 = V
OUT
Low
1 = V
OUT
Good
Table 17. LTC3589 Command Register Table
REG NAME B[7] B[6] B[5] B[4] B[3] B[2] B[1] B[0] DEFAULT
0x33
LTC3589
L2DTV2 LDO4 Control
MODE:
0 = LDO4
Enable with
EN_LDO34
1 = LDO4
Enable with
OVEN[6]
LDO4 Output Voltage:
00 = 2.8V
01 = 2.5V
10 = 1.8V
11 = 3.3V
LDO 2 Feedback Reference Input (V2)
00000 = 362.5mV
11001 = 675mV
11111 = 750mV
12.5mV Step Size
0001 1001
0x33
LTC3589-1
LTC3589-2
L2DTV2 Unused LDO4 Output Voltage:
00 = 1.2V
01 = 1.8V
10 = 2.5V
11 = 3.2V
LDO 2 Feedback Reference Input (V2)
00000 = 362.5mV
11001 = 675mV
11111 = 750mV
12.5mV Step Size
0001 1001
operaTion