LGGQ 데이터 시트보기 (PDF) - Linear Technology
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LGGQ Datasheet PDF : 24 Pages
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LT8614
Typical Performance Characteristics
Dropout Voltage
800
700
600
500
400
300
200
100
0
0 0.5 1 1.5 2 2.5 3 3.5 4
LOAD CURRENT (A)
8614 G19
Minimum Load to Full Frequency
(SYNC DC High)
100
FRONT PAGE APPLICATION
VOUT = 5V
80 fSW = 1MHz
60
40
20
0
5 10 15 20 25 30 35 40 45
INPUT VOLTAGE (V)
8614 G22
Switching Frequency
740
RT = 60.4k
730
720
710
700
690
680
670
660
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
8614 G20
Burst Frequency
1200
1000
FRONT PAGE APPLICATION
VIN = 12V
VOUT = 5V
800
600
400
200
0
0
50
100
150
200
LOAD CURRENT (mA)
8614 G21
Frequency Foldback
800
VOUT = 3.3V
700 VIN = 12V
VSYNC = 0V
600 RT = 60.4k
500
400
300
200
100
0
0
0.2 0.4 0.6
FB VOLTAGE (V)
0.8
1
8614 G23
Soft-Start Tracking
1.2
1.0
0.8
0.6
0.4
0.2
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
TR/SS VOLTAGE (V)
8614 G24
Soft-Start Current
2.6
VSS = 0.5V
2.5
2.4
2.3
2.2
2.1
2.0
1.9
1.8
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
8614 G25
6
PG High Thresholds
12.0
11.5
11.0
10.5
FB RISING
10.0
9.5
9.0
FB FALLING
8.5
8.0
7.5
7.0
–50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
8614 G26
PG Low Thresholds
–7.0
–7.5
–8.0
–8.5
–9.0
FB RISING
–9.5
–10.0
–10.5
FB FALLING
–11.0
–11.5
–12.0
–50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
8614 G27
8614fb
For more information www.linear.com/LT8614
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