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LT8609A Datasheet(PDF) 5 Page - Linear Technology

Part # LT8609A
Description  60V, 1.2A Synchronous Monolithic Buck Regulator with 6關A Quiescent Current
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT8609A Datasheet(HTML) 5 Page - Linear Technology

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LT8619/LT8619-5
5
8619f
For more information www.linear.com/LT8619
TYPICAL PERFORMANCE CHARACTERISTICS
LOAD CURRENT (mA)
0.001 0.01 0.1
1
10
100
1k
10k
0
10
20
30
40
50
60
70
80
90
100
2MHz Efficiency at VOUT = 3.3V
8619 G04
VIN = 12V
fOSC = 2MHz
FORCED
CONTINUOUS
MODE
PULSE-
SKIPPING
MODE
Burst Mode
OPERATION
L = 3.3µH
IHLP-2020AB-01
LOAD CURRENT (A)
0
0.2
0.4
0.6
0.8
1.0
1.2
70
75
80
85
90
95
100
Efficiency at VOUT = 5V
8619 G05
FORCED CONTINUOUS MODE
Burst Mode OPERATION
L = 10µH, IHLP-2020BZ-01
fOSC = 700kHz
48V
24V
12V
LOAD CURRENT (mA)
0.001 0.01 0.1
1
10
100
1k
10k
0
10
20
30
40
50
60
70
80
90
100
OUT
8619 G06
Burst Mode OPERATION
= 700kHz
OSC
f
VIN = 48V
IN = 24V
VIN = 12V
L = 10µH, IHLP-2020BZ-01
V
VIN (V)
0
10
20
30
40
50
60
70
75
80
85
90
95
100
Efficiency vs VIN
8619 G07
VOUT = 3.3V
fSW = 700kHz
FORCED CONTINUOUS MODE
L = 10µH IHLP-2020BZ-01
0.5A LOAD
1.2A LOAD
TEMPERATURE (°C)
–50 –25
0
25
50
75 100 125 150
0.5
1
10
20
VIN
8619 G09
fOSC = 700kHz
Burst Mode OPERATION
SHUTDOWN
12V
12V
60V
60V
2MHz Efficiency at VOUT = 3.3V
Efficiency at VOUT = 5V
Efficiency at VOUT = 3.3V
Efficiency vs VIN
No Load IVIN at 700kHz
No Load IVIN vs Temperature
700kHz Efficiency at VOUT = 5V
2MHz Efficiency at VOUT = 5V
700kHz Efficiency at VOUT = 3.3V
VIN (V)
1
10
100
0.1
1
10
100
1k
10k
No Load IVIN at 700kHz
8619 G08
FORCED CONTINUOUS MODE
Burst Mode OPERATION
3.3V
5V
3.3V
3.3V
VOUT:
PULSE-
SKIPPING
MODE
SHUTDOWN
fOSC = 700kHz
NO LOAD
LOAD CURRENT (mA)
0.001 0.01 0.1
1
10
100
1k
10k
0
10
20
30
40
50
60
70
80
90
100
700kHz Efficiency at VOUT = 5V
8619 G01
VIN = 12V
fOSC = 700kHz
FORCED
CONTINUOUS
MODE
PULSE-
SKIPPING
MODE
Burst Mode
OPERATION
L = 10µH
IHLP-2020BZ-01
LOAD CURRENT (mA)
0.001 0.01 0.1
1
10
100
1k
10k
0
10
20
30
40
50
60
70
80
90
100
700kHz Efficiency at VOUT = 3.3V
8619 G02
VIN = 12V
fOSC = 700kHz
FORCED
CONTINUOUS
MODE
PULSE-
SKIPPING
MODE
Burst Mode
OPERATION
L = 10µH
IHLP-2020BZ-01
LOAD CURRENT (mA)
0.001 0.01 0.1
1
10
100
1k
10k
0
10
20
30
40
50
60
70
80
90
100
2MHz Efficiency at VOUT = 5V
8619 G03
VIN = 12V
fOSC = 2MHz
FORCED
CONTINUOUS
MODE
PULSE-
SKIPPING
MODE
Burst Mode
OPERATION
L = 4.7µH
IHLP-2020AB-01


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