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LT8650SPJVPBF 数据表(PDF) 9 Page - Analog Devices

部件名 LT8650SPJVPBF
功能描述  Dual Channel 6A, 42V, Synchronous Step-Down Silent Switcher 2 with 6.2μA Quiescent Current
PDF  34 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

LT8650SPJVPBF 数据表(HTML) 9 Page - Analog Devices

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LT8650SP
9
Rev. B
For more information www.analog.com
TYPICAL PERFORMANCE CHARACTERISTICS
Switch Rising Edge
CH1, CH2, and CLKOUT
Start-Up Dropout Performance
Case Temperature Rise without
Heat Sink
Start-Up Dropout Performance
Case Temperature Rise without
Heat Sink
500ns/DIV
SW2
10V/DIV
SW1
10V/DIV
CLKOUT
2V/DIV
VIN = 12V
CH1 = 5VOUT
CH2 = 3.3VOUT
SYNC = FLOAT
8650sp G38
1ns/DIV
VSW
2V/DIV
8650sp G40
FCM
(SYNC FLOAT)
100ms/DIV
VIN
2V/DIV
VOUT
2V/DIV
5 LOAD
(1A IN REGULATION)
8650sp G40
100ms/DIV
VIN
2V/DIV
VOUT
2V/DIV
Burst Mode OPERATION
(SYNC = 0V)
5 LOAD
(1A IN REGULATION)
8650sp G41
LOAD1 CURRENT (A)
0
1
2
3
4
5
6
0
10
20
30
40
50
60
70
80
90
100
110
120
24VIN, LOAD2 = LOAD1
12VIN, LOAD2 = LOAD1
12VIN, LOAD2 = 4A
12VIN, LOAD2 = 0A
DC2407A DEMO BOARD
VOUT1 = 5V, VOUT2 = 3.3V, fSW = 2MHz
8650sp G42
DUTY CYCLE OF PULSED LOAD
0
0.2
0.4
0.6
0.8
1
0
10
20
30
40
50
60
70
80
90
100
CH1 = 0.5A STANDBY, 6A PULSED; CH2 = 0A DC
CH1 = 0.5A STANDBY, 6A PULSED; CH2 = 4A DC
CH1 = CH2 = 2A STANDBY, 6A PULSED
DC2407A DEMO BOARD
VIN1,2 = 12V, fSW = 2MHz
VOUT1 = 5V, VOUT2 = 3.3V
8650sp G43
Temperature Rise at 400kHz with
Heat Sink and Airflow
Temperature Rise at 2MHz with
Heat Sink and Airflow
TOTAL OUTPUT CURRENT (A)
0
2
4
6
8
10
12
14
16
0
10
20
30
40
50
60
70
80
90
100
110
120
8650sp G46
NO HEATSINK, NO AIRFLOW
NO HEATSINK, 200LFM
HEATSINK, NO AIRFLOW
HEATSINK, 200LFM
DC2868A DEMO BOARD
VIN = 12V, FSW = 400kHz
VOUT1 = VOUT2 = 3.4V
IOUT1 = IOUT2
TOTAL OUTPUT CURRENT (A)
0
2
4
6
8
10
12
14
16
0
10
20
30
40
50
60
70
80
90
100
110
120
8650sp G47
NO HEATSINK, NO AIRFLOW
NO HEATSINK, 200LFM
HEATSINK, NO AIRFLOW
HEATSINK, 200LFM
DC2868A DEMO BOARD
VIN = 12V, FSW = 2MHz
VOUT1 = 5V, VOUT2 = 3.3V
IOUT1 = IOUT2



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