LT3579IUFD-1-PBF データシートの表示（PDF） - Linear Technology
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LT3579IUFD-1-PBF Datasheet PDF : 40 Pages
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LT3579/LT3579-1
TYPICAL APPLICATION
1MHz, 2-Phase Converter Generates a 24V Output from a 8V to 16V Input and Uses Small Components
L2
4.7μH
D2
CPWR2
10μF
CVIN2
4.7μF
SW1 SW2
VIN
CLKOUT
FAULT
FB
LT3579-1
SLAVE
SHDN
GATE
RT
VC
SYNC GND SS
COUT1S
4.7μF
s2
86.6k
0.22μF
VPWR
8V TO 16V
VIN
3.3V TO VPWR
L1
4.7μH
D1
CPWR1
10μF
VOUT1
100k
500k
21.5k
CVIN1
4.7μF
5k
SW1 SW2
VIN
CLKOUT
FAULT
FB
LT3579-1
MASTER
SHDN
GATE
RT
VC
SYNC GND SS
COUT1M
4.7μF
s2
86.6k
0.22μF
VOUT1 M1**
6.4k**
137k
VOUT
24V
5.1A*
COUT
4.7μF
s2
D3**
VPWR
47pF 7k
2.2nF
3579 F23
CPWR1, CPWR2: 10μF, 25V, X7R, 1210
CVIN1, CVIN2: 4.7μF, 25V, X7R, 1206
COUT1M, COUT1S, COUT: 4.7μF, 50V, X5R, 1210
D1, D2: CENTRAL SEMI CTLSH5-40M833
D3: CENTRAL SEMI CTLSH1-40M563
L1, L2: VISHAY IHLP-2525CZ-01-4R7
M1: SILICONIX SI7461DP
*MAX OUTPUT CURRENT
VPWR = 8V
VPWR = 12V
VIN = 3.3V TO 5V
2.4A
3.7A
VIN = VPWR
2.2A
3.1A
**OPTIONAL FOR OUTPUT SHORT CIRCUIT PROTECTION
VPWR = 16V
5.1A
3.9A
Efficiency and Power Loss (VPWR = 12V)
100
8
90
7
80
6
70
VIN = 12V
5
60
4
VIN = 3.3V
50
3
40
2
30
1
20
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
LOAD CURRENT (A)
3579 TA24
36
Transient Response with 1.5A to 3.25A to 1.5A
Output Load Step (VPWR = 12V and VIN = 3.3V)
VOUT
1V/DIV
AC COUPLED
IL1 + IL2
5A/DIV
ILOAD
1A/DIV
100μs/DIV
3579 TA25
35791f
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