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LTC3675 Datasheet(PDF) 9 Page - Linear Technology

Part # LTC3675
Description  8-Channel Programmable, Parallelable 1A Buck DC/DCs
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3675 Datasheet(HTML) 9 Page - Linear Technology

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LTC3375
9
3375fa
For more information www.linear.com/3375
Typical perForMance characTerisTics
2A Buck Efficiency vs ILOAD
2A Buck Efficiency vs ILOAD
3A Buck Efficiency vs ILOAD
3A Buck Efficiency vs ILOAD
4A Buck Efficiency vs ILOAD
1A Buck Efficiency vs ILOAD
1A Buck Efficiency vs ILOAD
Burst Mode OPERATION
LOAD CURRENT(mA)
1
50
80
1000
3375 G21
30
20
10
0
100
10
100
40
60
70
90
VOUT = 1.8V
fOSC = 2MHz
L = 2.2µH
VIN = 3.3V
VIN = 5.5V
VIN = 2.25V
VIN = 5.5V
VIN = 3.3V
VIN = 2.25V
FORCED CONTINUOUS MODE
Burst Mode
OPERATION
LOAD CURRENT(mA)
1
50
80
1000
3375 G22
30
20
10
0
100
10
100
40
60
70
90
VOUT = 2.5V
fOSC = 2MHz
L = 2.2µH
VIN = 3.3V
VIN = 5.5V
VIN = 2.7V
VIN = 5.5V
VIN = 3.3V
VIN = 2.7V
FORCED CONTINUOUS MODE
Burst Mode
OPERATION
LOAD CURRENT(mA)
1
50
80
1000
3375 G23
30
20
10
0
100
10
100
40
60
70
90
VOUT = 1.8V
fOSC = 2MHz
L = 2.2µH
VIN = 3.3V
VIN = 5.5V
VIN = 2.25V
VIN = 5.5V
VIN = 3.3V
VIN = 2.25V
FORCED CONTINUOUS MODE
Burst Mode
OPERATION
VOUT = 1.8V
fOSC = 2MHz
L = 2.2µH
VIN = 3.3V
VIN = 5.5V
VIN = 2.25V
VIN = 5.5V
VIN = 3.3V
VIN = 2.25V
FORCED CONTINUOUS MODE
LOAD CURRENT(mA)
1
50
80
1000
3375 G25
30
20
10
0
100
10
100
40
60
70
90
FORCED CONTINUOUS MODE
Burst Mode
OPERATION
LOAD CURRENT(mA)
1
50
80
1000
3375 G24
30
20
10
0
100
10
100
40
60
70
90
VOUT = 2.5V
fOSC = 2MHz
L = 2.2µH
VIN = 3.3V
VIN = 5.5V
VIN = 2.7V
VIN = 5.5V
VIN = 3.3V
VIN = 2.7V
VOUT = 2.5V
fOSC = 2MHz
L = 2.2µH
FORCED CONTINUOUS MODE
Burst Mode
OPERATION
LOAD CURRENT(mA)
1
50
80
1000
3375 G26
30
20
10
0
100
10
100
40
60
70
90
VIN = 3.3V
VIN = 5.5V
VIN = 2.7V
VIN = 5.5V
VIN = 3.3V
VIN = 2.7V
VIN = 3.3V
VIN = 5.5V
VIN = 2.25V
VIN = 5.5V
VIN = 3.3V
VIN = 2.25V
VOUT = 1.8V
fOSC = 2MHz
L = 2.2µH
FORCED CONTINUOUS MODE
Burst Mode
OPERATION
LOAD CURRENT(mA)
1
50
80
1000
3375 G27
30
20
10
0
100
10
100
40
60
70
90
VCC vs Temperature
VSHNT Clamp Voltage
vs Temperature
TEMPERATURE (°C)
–50
3.20
3.22
3.26
3.28
3.30
3.40
3.34
0
50
75
3375 G19
3.24
3.36
3.38
3.32
–25
25
100 125 150
FOR VCC FEEDBACK DIVIDER
RTOP = 187k
RBOT = 107k
TEMPERATURE (°C)
–50
6.18
6.12
6.14
6.16
150
3375 G20
6.02
6.04
6.06
6.00
125
100
75
50
25
0
–25
6.20
6.08
6.10


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