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LT8349ACBZ-R7 Scheda tecnica(PDF) 26 Page - Analog Devices

Il numero della parte LT8349ACBZ-R7
Spiegazioni elettronici  8V, 12A, 2-Phase Low IQ Synchronous Boost Converter
PDF  29 Pages
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Produttore elettronici  AD [Analog Devices]
Homepage  http://www.analog.com
Logo AD - Analog Devices

LT8349ACBZ-R7 Scheda tecnica(HTML) 26 Page - Analog Devices

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Data Sheet
LT8349
analog.com
Rev B
26 of 29
TYPICAL APPLICATIONS
Figure 33. 2.5V to 4.5V Input, 6V Output Boost Converter
Figure 34. Efficiency and Power Loss vs Output Current
Figure 35. Efficiency and Power Loss vs Output Current
Figure 36. CISPR32 Conducted EMI measured on EVAL-
LT8349-BZ with SSFM mode
Figure 37. CISPR32 Radiated EMI measured on EVAL-
LT8349-BZ with SSFM mode
L1
0.47µH
0.1µF
8.2kΩ
470pF
4.7pF
54.9kΩ
2MHz
22µF
1MΩ
200kΩ
22µF
0.1µF
L2
0.47µH
VOUT
6V
3A AT 2.5VIN
VOUT
FB
SW1
LT8349
VIN
2.5V TO 4.5V
BST1
EN/UVLO
VIN
ISET
VC
SYNC/MODE
RT
SGND PGND
BST2
SW2
5A AT 4.5VIN
×6
×2
4.7pF
L1, L2 = COILCRAFT XGL4030-471ME
VIN = 2.5V
VIN = 4.5V
LOAD CURRENT (mA)
0.1
1
10
100
1k
5k
0
10
20
30
40
50
60
70
80
90
100
0.1
1
10
100
1k
10k
VIN = 3.7V
BURST EFFICIENCY
FCM EFFICIENCY
FCM LOSS
BURST LOSS
LOAD CURRENT (mA)
0.1
1
10
100
1k
5k
0
10
20
30
40
50
60
70
80
90
100
0.1
1
10
100
1k
10k
CISPR 32 CLASS B PEAK LIMIT
CISPR 32 CLASS B AVERAGE LIMIT
PEAK
AVERAGE
VIN = 3.7V
ILOAD = 2A
FREQUENCY (MHz)
0.1
1
10
30
–10
0
10
20
30
40
50
60
70
80
CISPR 32 CLASS B QP LIMIT
VERTICAL
SCAN
HORIZONTAL
SCAN
VIN = 3.7V
ILOAD = 4A
FREQUENCY (MHz)
30
100
1000
–10
0
10
20
30
40
50
60
70
80



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