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LTC3370 Datasheet(PDF) 9 Page - Analog Devices

Part # LTC3370
Description  20V, 4-Channel Buck DC/DC with 8x Configurable 1.5A Power Stages
PDF  28 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LTC3370 Datasheet(HTML) 9 Page - Analog Devices

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LTC3376
9
Rev 0
For more information www.analog.com
TYPICAL PERFORMANCE CHARACTERISTICS T
A = 25°C, unless otherwise noted.
Minimum Off-Time vs
Temperature
1.5A Buck Efficiency vs ILOAD,
VOUT=5V
1.5A Buck Efficiency vs ILOAD,
VOUT=3.3V
1.5A Buck Efficiency vs ILOAD,
VOUT=1.8V
1.5A Buck Efficiency vs ILOAD,
VOUT=1.2V
3A Buck Efficiency vs ILOAD,
VOUT=3.3V
TEMPERATURE (°C)
–50 –25
0
25
50
75
100 125
88
89
90
91
92
93
94
Temperature
Minimum Off-Time vs
3376 G22
FORCED CONTINUOUS MODE
fOSC = 1MHz
L DCR = 12mΩ
L = 5.6µH
OPERATION
Burst Mode
EXTVCC = 3.3V
VIN = 8V
VIN = 12V
VIN = 20V
VIN = 8V
VIN = 12V
VIN = 20V
LOAD CURRENT (A)
1m
10m
100m
1 2
0
10
20
30
40
50
60
70
80
90
100
VOUT = 5V
1.5A Buck Efficiency vs ILOAD,
3376 G23
FORCED CONTINUOUS MODE
EXTVCC = 3.3V
fOSC = 2MHz
L DCR = 14.5mΩ
L = 4.9µH
OPERATION
Burst Mode
VIN = 5V
VIN = 12V
VIN = 20V
VIN = 5V
VIN = 12V
VIN = 20V
LOAD CURRENT (A)
1m
10m
100m
1 2
0
10
20
30
40
50
60
70
80
90
100
VOUT = 3.3V
1.5A Buck Efficiency vs ILOAD,
3376 G24
FORCED CONTINUOUS MODE
fOSC = 2MHz
L DCR = 13.2mΩ
L = 2.2µH
OPERATION
Burst Mode
EXTVCC = 3.3V
VIN = 3.3V
VIN = 5V
VIN = 12V
VIN = 3.3V
VIN = 5V
VIN = 12V
LOAD CURRENT (A)
1m
10m
100m
1 2
0
10
20
30
40
50
60
70
80
90
100
VOUT = 1.8V
1.5A Buck Efficiency vs ILOAD,
3376 G25
FORCED CONTINUOUS MODE
fOSC = 2MHz
L DCR = 15mΩ
L = 1.5µH
OPERATION
Burst Mode
EXTVCC = 3.3V
VIN = 3.3V
VIN = 5V
VIN = 3.3V
VIN = 5V
LOAD CURRENT (A)
1m
10m
100m
1 2
0
10
20
30
40
50
60
70
80
90
100
VOUT = 1.2V
1.5A Buck Efficiency vs ILOAD,
3376 G26
L = 2.2µH
L DCR = 6.0mΩ
fOSC = 2MHz
FORCED CONTINUOUS MODE
Burst Mode
OPERATION
EXTVCC = 3.3V
VIN = 5V
VIN = 12V
VIN = 20V
VIN = 5V
VIN = 12V
VIN = 20V
LOAD CURRENT (A)
1m
10m
100m
1
3
0
10
20
30
40
50
60
70
80
90
100
VOUT = 3.3V
3A Buck Efficiency vs ILOAD,
3376 G27



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