LT3680E(RevA) 查看數據表（PDF） - Linear Technology
零件编号
产品描述 (功能)
比赛名单
LT3680E
(Rev.:RevA)
(Rev.:RevA)
Linear Technology
LT3680E Datasheet PDF : 24 Pages
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LT3680
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted.
Efficiency
100
VIN = 12V
90
VIN = 34V
80
VIN = 24V
70
60 VOUT = 5V
L = 4.7μH
f = 600kHz
50
0 0.5 1 1.5 2 2.5
OUTPUT CURRENT (A)
3 3.5
3680 G01
Efficiency
100
Efficiency
100
3.0
90
VIN = 12V
90
2.5
80
VIN = 34V
VIN = 24V
70
60 VOUT = 3.3V
L = 3.3μH
f = 600kHz
50
0 0.5 1 1.5 2 2.5
OUTPUT CURRENT (A)
3 3.5
3680 G02
80
2.0
70
1.5
60
VIN = 12V
VOUT = 5V
L = 4.7μH
f = 600kHz
50
0 0.5 1 1.5 2 2.5
OUTPUT CURRENT (A)
1.0
0.5
3 3.5
3680 G03
No Load Supply Current
130
VOUT = 3.3V
110
90
70
50
30
10
0 5 10 15 20 25 30 35
INPUT VOLTAGE (V)
3680 G04
No Load Supply Current
400
CATCH DIODE: DIODES, INC. PDS360
350 VIN = 12V
300 VOUT = 3.3V
INCREASED SUPPLY
250
CURRENT DUE TO CATCH
DIODE LEAKAGE AT
200
HIGH TEMPERATURE
150
100
50
0
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3680 G05
Maximum Load Current
5.5
TYPICAL
5.0
4.5
MINIMUM
4.0
3.5
VOUT = 3.3V
3.0 TA = 25°C
L = 4.7μH
f = 600kHz
2.5
5
10
15
20
25
30
INPUT VOLTAGE (V)
3680 G06
Maximum Load Current
5.5
5.0
TYPICAL
4.5
MINIMUM
4.0
3.5
VOUT = 5V
TA = 25°C
L = 4.7μH
f = 600kHz
3.0
5
10
15
20
25
30
INPUT VOLTAGE (V)
3680 G07
4
Switch Current Limit
6.0
5.5
5.0
4.5
4.0
3.5
3.0
0
20
40
60
80
100
DUTY CYCLE (%)
3680 G08
Switch Current Limit
6.5
6.0
5.5
DUTY CYCLE = 10 %
5.0
4.5
DUTY CYCLE = 90 %
4.0
3.5
3.0
2.5
2.0
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3680 G09
3680fa
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