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LT8636 Folha de dados(PDF) 9 Page - Analog Devices

Nome de Peças LT8636
Descrição Electrónicos  42V, 5A/7A Peak Synchronous Step-Down Silent Switcher with 2.5關A Quiescent Current
PDF  32 Pages
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Fabricante Electrônico  AD [Analog Devices]
Página de início  http://www.analog.com
Logo AD - Analog Devices

LT8636 Folha de dados(HTML) 9 Page - Analog Devices

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LT8636/LT8637
9
Rev. C
For more information www.analog.com
TYPICAL PERFORMANCE CHARACTERISTICS
Case Temperature Rise
Case Temperature Rise vs 7A
Pulsed Load
DEMO BOARD IN STILL AIR
L = XEL6030, 1.5µH
VIN = 12V, fSW = 1MHz
VIN = 24V, fSW = 1MHz
VIN = 12V, fSW = 2MHz
VIN = 24V, fSW = 2MHz
LOAD CURRENT (A)
0
1
2
3
4
5
0
10
20
30
40
50
60
70
80
8636 G37
DC2918A DEMO BOARD
VIN = 12V
VOUT = 5V
fSW = 2MHz
STANDBY LOAD = 0.25A
1kHz PULSED LOAD = 7A
DUTY CYCLE OF 7A LOAD
0
0.2
0.4
0.6
0.8
1
0
15
30
45
60
75
90
105
120
135
8636 G38
VIN = 12V
ILOAD = 2A
2ns/DIV
VSW
2V/DIV
8636 G39
Switching Waveforms, Full
Frequency Continuous Operation
Switching Waveforms, Burst
Mode Operation
Switching Rising Edge
FRONT PAGE APPLICATION
12VIN TO 5VOUT AT 1A
500ns/DIV
IL
1A/DIV
VSW
5V/DIV
8636 G40
FRONT PAGE APPLICATION
12VIN TO 5VOUT AT 10mA
VSYNC = 0V
5µs/DIV
VSW
5V/DIV
IL
500mA/DIV
8636 G41
Switching Waveforms
FRONT PAGE APPLICATION
36VIN TO 5VOUT AT 1A
500ns/DIV
VSW
10V/DIV
IL
1A/DIV
8636 G42
LT8636 Transient Response;
Internal Compensation
2A TO 4A TRANSIENT
12VIN, 5VOUT
FRONT PAGE APPLICATION
fSW = 2MHz
COUT = 100µF, CLEAD = 10pF
20µs/DIV
VOUT
100mV/DIV
ILOAD
2A/DIV
8636 G43
2A TO 4A TRANSIENT
12VIN, 5VOUT
fSW = 2MHz
CC = 330pF, RC = 8.45k
COUT = 100µF, CLEAD = 4.7pF
20µs/DIV
VOUT
100mV/DIV
ILOAD
2A/DIV
8636 G44
LT8637 Transient Response;
External Compensation



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