LGGQ View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LGGQ' PDF : 24 Pages View PDF
LT8614
Typical Performance Characteristics
Efficiency at 5VOUT
100
95
90
85
80
75
70
65
60
55
50
0 0.5 1
1.5 2
fSW = 1MHz
L = 4.7µH
VIN = 12V
VIN = 24V
VIN = 36V
2.5 3 3.5 4
LOAD CURRENT (A)
8614 G01
Efficiency at 3.3VOUT
100
90
80
70
60
50
40
30
20
10
0
0.01
fSW = 1MHz
L = 4.7µH
VIN = 12V
VIN = 24V
VIN = 36V
0.1
1
10 100 1000
LOAD CURRENT (mA)
8614 G04
Efficiency at 3.3VOUT
100
95
90
85
80
75
70
65
fSW = 1MHz
L = 2.2µH
60
VIN = 12V
55
VIN = 24V
VIN = 36V
50
0 0.5 1 1.5 2 2.5 3 3.5 4
LOAD CURRENT (A)
8614 G02
Efficiency vs Frequency
98
VOUT = 5V
96
ILOAD = 1A
L = 8.6µH
94
VIN = 12V
92
VIN = 24V
90
88
86
84
0.25
0.75 1.25 1.75 2.25 2.75
SWITCHING FREQUENCY (MHz)
8614 G05
Efficiency at 5VOUT
100
90
80
70
60
50
40
30
20
10
0
0.01
fSW = 1MHz
L = 4.7µH
VIN = 12V
VIN = 24V
VIN = 36V
0.1
1
10 100 1000
LOAD CURRENT (mA)
8614 G03
Burst Mode Efficiency
vs Inductor Value
95
VOUT = 5V
ILOAD = 10mA
90
VIN = 12V
85
VIN = 24V
80
75
70
65
0
2
4
6
8
INDUCTOR VALUE (µH)
10
8614 G06
Reference Voltage
0.979
0.977
0.975
0.973
0.971
0.969
0.967
0.965
0.963
0.961
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
8614 G07
4
EN Pin Thresholds
1.03
1.02
1.01
EN RISING
1.00
0.99
0.98
0.97
EN FALLING
0.96
0.95
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
8614 G08
Load Regulation
0.15
VOUT = 5V
VIN = 12V
0.10
0.05
0
–0.05
–0.10
–0.15
0 0.5 1 1.5 2 2.5 3 3.5 4
LOAD CURRENT (A)
8614 G09
8614fb
For more information www.linear.com/LT8614
Share Link: 
