LTC3589-2_15 Datasheet, PDF (41/50 Pages) Linear Technology – 8-Output Regulator with Sequencing and I2C

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