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LTC3370 データシート(PDF) 11 Page - Linear Technology

部品番号 LTC3370
部品情報  60V Low IQ Buck Controller Plus 4-Channel 8A Configurable Buck DC/DCs
PDF  44 Pages
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メーカー  LINER [Linear Technology]
ホームページ  http://www.linear.com
Logo LINER - Linear Technology

LTC3370 データシート(HTML) 11 Page - Linear Technology

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LTC3372
11
Rev. A
For more information www.analog.com
TYPICAL PERFORMANCE CHARACTERISTICS
2A Buck Efficiency and Power
Loss vs Output Current
2A Buck Efficiency
vs VIN Forced Continuous Mode
2A Buck Efficiency
vs VIN Burst Mode
2A Buck Efficiency
vs VOUT Forced Continuous Mode
2A Buck Efficiency
vs VOUT Burst Mode Operation
Efficiency vs Output Current
Burst Mode Operation
2A Buck Efficiency vs Output Current
Across Switching Frequency
2A Buck Regulator Feedback
Voltage vs Temperature
1A Buck Load Regulation Across
VIN Forced Continuous Mode
(LV Buck Regulator) TA = 25°C, unless otherwise noted.
BURST EFFICIENCY
BURST LOSS
VIN = 3.3V
VOUT = 1.8V
FCM EFFICIENCY
FCM LOSS
OUTPUT CURRENT (A)
0.0001
0.001
0.01
0.1
1 2
0
10
20
30
40
50
60
70
80
90
100
0.1
1
10
100
1000
10000
3372 G25
VOUT = 1.8V
fSW = 2MHz
ILOAD = 1mA
ILOAD = 10mA
ILOAD = 100mA
ILOAD = 1A
INPUT VOLTAGE (V)
2
2.5
3
3.5
4
4.5
5
5.5
0
10
20
30
40
50
60
70
80
90
100
3372 G26
VOUT = 1.8V
fSW = 2MHz
ILOAD = 1mA
ILOAD = 10mA
ILOAD = 100mA
ILOAD = 1A
INPUT VOLTAGE (V)
2
2.5
3
3.5
4
4.5
5
5.5
70
75
80
85
90
95
100
3372 G27
VIN = 3.3V
fSW = 2MHz
ILOAD = 1mA
ILOAD = 1A
ILOAD = 100mA
ILOAD = 10mA
OUTPUT VOLTAGE (V)
0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0
0
10
20
30
40
50
60
70
80
90
100
3372 G28
VIN = 3.3V
fSW = 2MHz
ILOAD = 1mA
ILOAD = 10mA
ILOAD = 10mA
ILOAD = 1A
OUTPUT VOLTAGE (V)
0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0
70
75
80
85
90
95
100
3372 G29
VIN = 3.3V
VOUT = 1.8V
fSW = 2MHz
1A Buck
2A Buck
3A Buck
4A Buck
OUTPUT CURRENT (V)
0.0001
0.001
0.01
0.1
1
4
0
10
20
30
40
50
60
70
80
90
100
3372 G30
VIN = 3.3V
VOUT = 1.8V
BURST MODE
FCM
fSW = 1MHz
fSW = 2MHz
fSW = 3MHz
OUTPUT CURRENT (A)
0.0001
0.001
0.01
0.1
1 2
0
10
20
30
40
50
60
70
80
90
100
3372 G31
VIN = 3.3V
VOUT = 1.8V
TEMPERATURE (°C)
–75 –50 –25 0
25 50 75 100 125 150
792
794
796
798
800
802
804
806
3372 G32
VOUT = 1.8V
VIN = 2.25V
VIN = 3.3V
VIN = 5V
OUTPUT CURRENT (A)
0.001
0.01
0.1
1
1.700
1.710
1.720
1.730
1.740
1.750
1.760
1.770
1.780
1.790
1.800
3372 G33



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