LTC3676/LTC3676-1
30
3676fe
For more information www.linear.com/LTC3676
OPERATION
REG NAME B[7] B[6] B[5] B[4] B[3] B[2] B[1] B[0] DEFAULT
0x08 SQD2 Reserved Reserved Sequence Down LD04:
00 = With WAKE
01 =
WAKE + 100ms
10 = WAKE + 200ms
11 = WAKE + 300ms
Sequence
Down LD03:
00 = With WAKE
01 =
WAKE + 100ms
10 = WAKE + 200ms
11 = WAKE + 300ms
Sequence
Down LD02:
00 = With WAKE
01 =
WAKE + 100ms
10 = WAKE + 200ms
11 = WAKE + 300ms
XX00 0000
0x09
CNTRL PWR_ON:
0 = Not
PWR_ON
1 =
PWR_ON
"ORed" with
PWR_ON PIN
Pushbutton
Hard Reset
Timer:
0 = 10 sec
1 = 5 sec
Software
Control
Mode:
0 = Pin or
Register
Control
1 =
Inhibit Pin
Control
UV Warning Threshold:
000 = 2.7V
001 = 2.8V
010 = 2.9V
011 = 3.0V
100 = 3.1V
101 = 3.2V
110 = 3.3V
111 = 3.4V
Over
temperature Warning
Levels:
00 = 10°C Below
Overtemperature
01 = 20°
C Below
Overtemperature
10 = 30°C Below
Overtemperature
11 = 40°C Below
Overtemperature
0000 0000
0x0A DVB1A Reserved Reserved Buck1
Reference
Select:
0 =
DVB1A[4-0]
1 =
DVB1B[4-0]
Buck1
Feedback Reference Input (VA):
00000 = 412.5mV
11001 = 725mV
11111 = 800mV
12.5mV Step
Size
XX01 1001
0x0B DVB1B Reserved Reserved PGOOD Mask:
0 = PGOOD
Low
When
Slewing
1 = PGOOD
Not Forced
Low When
Slewing
Buck1 Feedback Reference Input (VB):
00000 = 412.5mV
11001 = 725mV
11111 = 800mV
12.5mV Step
Size
XX01 1001
0x0C DVB2A Reserved Reserved Buck2
Reference
Select:
0 =
DVB2A[4-0]
1 =
DVB2B[4-0]
Buck2
Feedback Reference Input (VA):
00000 = 412.5mV
11001 = 725mV
11111 = 800mV
12.5mV Step Size
XX01 1001
0x0D
DVB2B Reserved Reserved PGOOD Mask:
0 = PGOOD
Low
When
Slewing
1 = PGOOD
Not Forced
Low When
Slewing
Buck2 Feedback Reference Input (VB):
00000 = 412.5mV
11001 = 725mV
11111 = 800mV
12.5mV Step
Size
XX01 1001
0x0E DVB3A Reserved Reserved Buck3
Reference
Select:
0 =
DVB3A[4-0]
1 =
DVB3B[4-0]
Buck3
Feedback Reference Input (VA):
00000 = 412.5mV
11001 = 725mV
11111 = 800mV
12.5mV Step
Size
XX01 1001