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LTC3546 Datasheet(PDF) 7 Page - Linear Technology

Part # LTC3546
Description  Dual Synchronous, 3A/1A or 2A/2A Confi gurable Step-Down DC/DC Regulator
PDF  28 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3546 Datasheet(HTML) 7 Page - Linear Technology

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LTC3546
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TYPICAL PERFORMANCE CHARACTERISTICS
OUT2 Efficiency vs VIN
OUT2 Efficiency vs VIN
OUT1 Load Step
OUT1 Load Step
OUT2 Load Step
OUT2 Load Step
VIN (V)
100
82
98
94
90
86
96
92
88
84
80
4.25
4.75
3.75
5.25
3.25
2.75
2.25
3546 G20
600mA
3A
SW1D CONNECTED TO SW2
VOUT = 2.5V
3546 G21
400mA
2A
SW1D CONNECTED TO SW1
VOUT = 2.5V
VIN (V)
100
82
98
94
90
86
96
92
88
84
80
4.25
4.75
3.75
5.25
3.25
2.75
2.25
100μs/DIV
VOUT
100mV/DIV
ILOAD
1A/DIV
3546 G22
SW1D CONNECTED TO SW1
VIN = 3.6V
VOUT = 1.2V
ILOAD = 200mA TO 1.9A
100μs/DIV
VOUT
100mV/DIV
ILOAD
250mA/DIV
3546 G23
SW1D CONNECTED TO SW2
VIN = 3.6V
VOUT = 1.2V
ILOAD = 100mA TO 0.9A
100μs/DIV
VOUT
100mV/DIV
ILOAD
1A/DIV
3546 G24
SW1D CONNECTED TO SW2
VIN = 3.6V
VOUT = 1.8V
ILOAD = 300mA TO 2.9A
100μs/DIV
VOUT
100mV/DIV
ILOAD
1A/DIV
3546 G25
SW1D CONNECTED TO SW1
VIN = 3.6V
VOUT = 1.8V
ILOAD = 200mA TO 1.9A
OUT1 Efficiency vs Frequency
OUT1 Efficiency vs Frequency
3.5
4.0
3.0
2.5
2.0
1.5
1.0
0.5
FREQUENCY (MHz)
95
94
93
92
91
90
86
87
88
89
85
3546 G26
SW1D CONNECTED TO SW1
VIN = 3.6V
VOUT = 1.8V
ILOAD = 400mA
FREQUENCY (MHz)
3546 G27
SW1D CONNECTED TO SW2
VIN = 3.6V
VOUT = 1.8V
ILOAD = 200mA
3.5
4.0
3.0
2.5
2.0
1.5
1.0
0.5
95
94
93
92
91
90
86
87
88
89
85
OUT2 Efficiency vs Frequency
3.5
4.0
3.0
2.5
2.0
1.5
1.0
0.5
FREQUENCY (MHz)
3546 G28
SW1D CONNECTED TO SW2
VIN = 3.6V
VOUT = 2.5V
ILOAD = 600mA
95
94
93
92
91
90
86
87
88
89
85



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