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LTC3312SAAVPBF Arkusz danych(PDF) 8 Page - Analog Devices

Numer części LTC3312SAAVPBF
Szczegółowy opis  5V, Dual 6A/Dual-Phase 12A Step-Down DC/DC Regulator
PDF  28 Pages
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Producent  AD [Analog Devices]
Strona internetowa  http://www.analog.com
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LTC3312SAAVPBF Arkusz danych(HTML) 8 Page - Analog Devices

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LTC3312SA
8
Rev. 0
For more information www.analog.com
TYPICAL PERFORMANCE CHARACTERISTICS
2-Phase Die Temperature vs Load
3.3VIN to 1.0VOUT, fSW = 2MHz,
Forced Continuous Mode
2-Phase Efficiency vs Load,
2.5V to 1.0V, fSW = 2MHz
2-Phase Efficiency vs Load,
3.3V to 1.0V, fSW = 2MHz
2-Phase Efficiency vs Load,
5.0V to 1.0V, fSW = 2MHz
2-Phase Efficiency, VIN = 2.5V
Burst Mode Operation
2-Phase Efficiency, VIN = 3.3V
Burst Mode Operation
2-Phase Efficiency, VIN = 5.0V
Burst Mode Operation
Efficiency vs fSW
3.3V to 1.2V, ILOAD = 3A
Efficiency vs VIN
VOUT = 1.2V, fSW = 2MHz
COILCRAFT XEL3515-221
6A (CONTINUOUS)
0.1A (BURST)
VIN (V)
2.5
3
3.5
4
4.5
5
5.5
83
84
85
86
87
88
89
90
91
92
93
VOUT = 1.2V, fSW = 2MHz
Efficiency vs VIN
3312SA G29
L = 150nH
85°C
45°C
25°C
LOAD CURRENT (A)
0
2
4
6
8
10
12
0
20
40
60
80
100
120
Forced Continuous Mode
3.3VIN to 1.0VOUT, fs = 2MHz,
2–Phase Die Temperature vs Load
3312SA G30
fSW = 2MHz, COILCRAFT XEL3515-151
BURST
PULSE-SKIP
FC
ILOAD (A)
0.001
0.01
0.1
1
10 20
0
10
20
30
40
50
60
70
80
90
100
2.5V to 1.0V, fSW = 2MHz
3312SA G31
fSW = 2MHz, COILCRAFT XEL3515-151
BURST
PULSE-SKIP
FC
ILOAD (A)
0.001
0.01
0.1
1
10 20
0
10
20
30
40
50
60
70
80
90
100
3.3V to 1.0V, fSW = 2MHz
3312SA G32
fSW = 2MHz, COILCRAFT XEL3515-151
BURST
PULSE-SKIP
FC
ILOAD (A)
0.001
0.01
0.1
1
10 20
0
10
20
30
40
50
60
70
80
90
100
5.0V to 1.0V, fSW = 2MHz
3312SA G33
fSW = 2MHz, COILCRAFT XEL3515-151
VOUT = 0.5V
VOUT = 0.75V
VOUT = 1.0V
VOUT = 1.2V
VOUT = 1.8V
ILOAD (A)
0.001
0.01
0.1
1
10
20
30
40
50
60
70
80
90
100
Burst Mode Operation
3312SA G34
fSW = 2MHz, COILCRAFT XEL3515-151
VOUT = 0.5V
VOUT = 0.75V
VOUT = 1.0V
VOUT = 1.2V
VOUT = 1.8V
ILOAD (A)
0.001
0.01
0.1
1
10
20
30
40
50
60
70
80
90
100
Burst Mode Operation
3312SA G35
fSW = 2MHz, COILCRAFT XEL3515-151
VOUT = 0.5V
VOUT = 0.75V
VOUT = 1.0V
VOUT = 1.2V
VOUT = 1.8V
ILOAD (A)
0.001
0.01
0.1
1
10
20
30
40
50
60
70
80
90
100
Burst Mode Operation
3312SA G36
TA = 25°C, unless otherwise noted.
COILCRFAT XEL3515 SERIES
L = 150nH
L = 220nH
L = 350nH
SWITCHING FREQUENCY (MHz)
1
1.4
1.8
2.2
2.6
3.0
88
89
90
91
92
93
94
3312SA G28



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