参数资料
型号: LTC3589HUJ-1#PBF
厂商: LINEAR TECHNOLOGY CORP
元件分类: 稳压器
英文描述: SWITCHING REGULATOR, 2600 kHz SWITCHING FREQ-MAX, PQCC40
封装: 6 X 6 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, QFN-40
文件页数: 33/46页
文件大小: 570K
代理商: LTC3589HUJ-1#PBF
LTC3589/LTC3589-1
39
3589fc
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
0x13
PGSTAT
LDO4 Status:
0 = VOUT Low
1 = VOUT Good
LDO3 Status:
0 = VOUT Low
1 = VOUT Good
LDO2 Status:
0 = VOUT Low
1 = VOUT Good
Buck_Boost
Status:
0 = VOUT Low
1 = VOUT Good
Step-Down
Switching
Regulator 3
Status:
0 = VOUT Low
1 = VOUT Good
Step-Down
Switching
Regulator 2
Status:
0 = VOUT Low
1 = VOUT Good
Step-Down
Switching
Regulator 1
Status:
0 = VOUT Low
1 = VOUT Good
LDO1 Status:
0 = VOUT Low
1 = VOUT Good
OPERATION
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
0x2A
B3DTV2 Keep-Alive
Mode:
0 = Normal
Shutdown
1 = Keep-Alive
Phase
Select:
0 = Clock
Phase 1
1 = Clock
Phase 2
Step-Down
Switching
Regulator 3
Clock Rate
0 = 2.25MHz
1 = 1.125MHz
Step-Down Switching Regulator 3 Feedback Reference Input (V2)
00000 = 362.5mV
11001 = 675mV
11111 = 750mV
12.5mV Step Size
0001 1001
0x32
L2DTV1 Keep-Alive
Mode:
0 = Normal
Shutdown
1 = Keep-Alive
Unused
PGOOD
Mask:
0 = PGOOD
Low When
Slewing
1 = PGOOD
Not Changed
When
Slewing.
LDO 2 Feedback Reference Input (V1)
00000 = 362.5mV
11001 = 675mV
11111 = 750mV
12.5mV Step Size
0001 1001
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
L2DTV2 Unused
LDO4 Output Voltage:
00 = 1.2V
01 = 1.8V
10 = 2.8V
11 = 3.2V
LDO 2 Feedback Reference Input (V2)
00000 = 362.5mV
11001 = 675mV
11111 = 750mV
12.5mV Step Size
0001 1001
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