LT3478 Ver la hoja de datos (PDF) - Linear Technology
Número de pieza
componentes Descripción
Fabricante
LT3478 Datasheet PDF : 24 Pages
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TYPICAL PERFOR A CE CHARACTERISTICS
LT3478/LT3478-1
VREF vs Temperature
1.28
⎯S⎯H⎯D⎯N Threshold vs Temperature
1.60
⎯S⎯H⎯D⎯N Pin (Hysteresis) Current vs
Temperature
15
1.26
1.24
1.22
1.20
1.18
–50 –25 0 25 50 75 100 125
JUNCTION TEMPERATURE (°C)
3478 G07
VIN Shutdown Current vs
Temperature
50
SHDN = 0V
40
30
20
VIN = 36V
VIN = 20V
10
VIN = 2.8V
0
–50 –25 0 25 50 75 100 125
JUNCTION TEMPERATURE (°C)
3478 G10
1.50
1.40
1.30
1.20
–50 –25 0 25 50 75 100 125
JUNCTION TEMPERATURE (°C)
3478 G08
VIN Quiescent Current vs VIN
14
12
10
8
6
4
2
TA= 25°C
0
VC = 0V
0 3 6 9 12 15 18 21 24 27 30 33 36
VIN (V)
3478 G11
JUST BEFORE PART TURNS ON
10
5
AFTER PART TURNS ON
0
–50 –25 0 25 50 75 100 125
JUNCTION TEMPERATURE (°C)
3478 G09
VIN Quiescent Current vs
Temperature
14
12
10
8
6
4
2
VIN = 2.8V
0 VC = 0V
–50 –25 0
25 50 75 100 125
JUNCTION TEMPERATURE (°C)
3478 G12
VS, L, SW Shutdown Currents vs
Temperature
4
SHDN = 0V
VS = L = SW = 36V
2
I(VS PIN) = I(L PIN)
I(SW PIN)
0
–50 –25 0 25 50 75 100 125
JUNCTION TEMPERATURE (°C)
3478 G18
Switch Peak Current Limit
vs Duty Cycle
7
6
5
4
3
2
1
0 TA= 25°C
0
20
40
60
DUTY CYCLE (%)
80 100
3478 G19
34781f
5
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