参数资料
型号: LT3579EFE-1#PBF
厂商: LINEAR TECHNOLOGY CORP
元件分类: 稳压器
英文描述: SWITCHING REGULATOR, PDSO20
封装: 4.40 MM, LEAD FREE, PLASTIC, TSSOP-20
文件页数: 30/40页
文件大小: 503K
代理商: LT3579EFE-1#PBF
LT3579/LT3579-1
36
35791f
Typical applicaTion
L2
4.7H
L1
4.7H
D2
D1
D3**
M1**
CPWR2
10F
CVIN2
4.7F
COUT1S
4.7F
×2
COUT1M
4.7F
×2
VPWR
8V TO 16V
VIN
3.3V TO VPWR
VOUT
24V
5.1A*
VOUT1
VPWR
0.22F
COUT
4.7F
×2
CVIN1
4.7F
CPWR1, CPWR2: 10F, 25V, X7R, 1210
CVIN1, CVIN2: 4.7F, 25V, X7R, 1206
COUT1M, COUT1S, COUT: 4.7F, 50V, X5R, 1210
D1, D2: CENTRAL SEMI CTLSH5-40M833
D3: CENTRAL SEMI CTLSH1-40M563
L1, L2: VISHAY IHLP-2525CZ-01-4R7
M1: SILICONIX SI7461DP
CPWR1
10F
137k
35791 TA23
SW1 SW2
VIN
CLKOUT
GATE
VC
SS
GND
FB
FAULT
SYNC
SHDN
RT
LT3579-1
MASTER
SW1 SW2
VIN
CLKOUT
GATE
VC
SS
GND
FB
FAULT
SYNC
SHDN
RT
LT3579-1
SLAVE
86.6k
6.4k**
7k
2.2nF
47pF
0.22F
5k
86.6k
21.5k
500k
100k
1MHz, 2-Phase Converter Generates a 24V Output from a 8V to 16V Input and Uses Small Components
LOAD CURRENT (A)
0
20
30
50
90
EFFICIENCY
(%)
POWER
LOSS
(W)
70
80
60
40
100
0
3
4
5
6
7
2
1
8
1
0.5
3.5 4 4.5
2
1.5
35791 TA24
2.5 3
VIN = 12V
VIN = 3.3V
Efficiency and Power Loss (VPWR = 12V)
100s/DIV
VOUT
1V/DIV
AC COUPLED
ILOAD
1A/DIV
IL1 + IL2
5A/DIV
35791 TA25
Transient Response with 1.5A to 3.25A to 1.5A
Output Load Step (VPWR = 12V and VIN = 3.3V)
*MAX OUTPUT CURRENT
VPWR = 8V
VPWR = 12V
VPWR = 16V
VIN = 3.3V TO 5V
2.4A
3.7A
5.1A
VIN = VPWR
2.2A
3.1A
3.9A
**OPTIONAL FOR OUTPUT SHORT CIRCUIT PROTECTION
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