3439EFE 데이터 시트보기 (PDF) - Linear Technology
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3439EFE Datasheet PDF : 12 Pages
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TYPICAL PERFOR A CE CHARACTERISTICS
LT3439
Minimum Input Voltage
vs Temperature
2.750
2.700
2.650
2.600
2.550
2.500
2.450
2.400
2.350
2.300
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3439 G01
Switch Voltage Drop
vs Switch Current
0.9
0.8
125°C
0.7
0.6
85°C
0.5
25°C
0.4
0.3
0.2
0.1
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
SWITCH CURRENT (A)
3439 G04
Current Limit vs Temperature
2.0
1.8
1.6
1.4
1.2
1.0
0.8
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3439 G07
Supply Current in Shutdown Mode
vs Temperature
16
14
12
17.5V
10
8
5V
6
4
2.7V
2
0
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3439 G02
Supply Current vs Slew Resistor
25
TA = 25°C
20
15
10
5
0
0
10000 20000 30000 40000
SLEW RESISTOR (Ω)
3439 G05
SHDN Pin Voltage Threshold
vs Temperature
1.35
1.34
1.33
1.32
1.31
1.30
1.29
1.28
1.27
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3439 G08
Oscillator Frequency
vs Temperature
120
RT = 16.9k
115 CT = 680pF
110
105
100
95
90
85
80
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3439 G03
SHDN Pin Hysteresis Current
vs Temperature
24
22
20
18
16
14
12
10
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3439 G06
SYNC Pin Voltage Threshold
vs Temperature
1.6
1.5
1.4
1.3
1.2
1.1
1.0
–50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
3439 G09
sn3439 3439fs
3
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