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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： 32/46页
文件大小： 570K
代理商： LTC3589HUJ-1#PBF
LTC3589/LTC3589-1
38
3589fc
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
0x21
CLIRQ
0x23
B1DTV1 Step-Down Switching
Regulator Switch DV/DT
Control:
00 = 1ns
01 = 2ns
10 = 4ns
11 = 8ns
PGOOD
Mask:
0 = PGOOD
Low When
Slewing
1 = PGOOD
Not Forced
Low When
Slewing.
Step-Down Switching Regulator 1 Feedback Reference Input (V1)
00000 = 362.5mV
11001 = 675mV
11111 = 750mV
12.5mV Step Size
0001 1001
0x24
B1DTV2 Keep-Alive
Mode:
0 = Normal
Shutdown
1 = Keep-Alive
Phase
Select:
0 = Clock
Phase 1
1 = Clock
Phase 2
Step-Down
Switching
Regulator 1
Clock Rate
0 = 2.25MHz
1 = 1.12MHz
Step-Down Switching Regulator 1 Feedback Reference Input (V2)
00000 = 362.5mV
11001 = 675mV
11111 = 750mV
12.5mV Step Size
0001 1001
0x25
VRRCR LDO2 Dynamic Reference
Slew Rate:
00 = 0.88mV/μs
01 = 1.75mV/μs
10 = 3.5mV/μs
11 = 7mV/μs
Step-Down Switching
Regulator 3 Dynamic
Reference Slew Rate:
00 = 0.88mV/μs
01 = 1.75mV/μs
10 = 3.5mV/μs
11 = 7mV/μs
Step-Down Switching
Regulator 2 Dynamic
Reference Slew Rate:
00 = 0.88mV/μs
01 = 1.75mV/μs
10 = 3.5mV/μs
11 = 7mV/μs
Step-Down Switching
Regulator 1 Dynamic
Reference Slew Rate:
00 = 0.88mV/μs
01 = 1.75mV/μs
10 = 3.5mV/μs
11 = 7mV/μs
1111 1111
0x26
B2DTV1 Unused
PGOOD
Mask:
0 = PGOOD
Low When
Slewing
1 = PGOOD
Not Forced
Low When
Slewing.
Step-Down Switching Regulator 2 Feedback Reference Input (V1)
00000 = 362.5mV
11001 = 675mV
11111 = 750mV
12.5mV Step Size
0001 1001
0x27
B2DTV2 Keep-Alive
Mode:
0 = Normal
Shutdown
1 = Keep-Alive
Phase
Select:
0 = Clock
Phase 1
1 = Clock
Phase 2
Step-Down
Switching
Regulator 2
Clock Rate
0 = 2.25MHz
1 = 1.125MHz
Step-Down Switching Regulator 2 Feedback Reference Input (V2)
00000 = 362.5mV
11001 = 675mV
11111 = 750mV
12.5mV Step Size
0001 1001
0x29
B3DTV1 Unused
PGOOD
Mask:
0 = PGOOD
Low When
Slewing
1 = PGOOD
Not Forced
Low When
Slewing.
Step-Down Switching Regulator 3 Feedback Reference Input (V1)
00000 = 362.5mV
11001 = 675mV
11111 = 750mV
12.5mV Step Size
0001 1001
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