LTC1778EGN-1 Ver la hoja de datos (PDF) - Linear Technology
Número de pieza
componentes Descripción
Fabricante
LTC1778EGN-1 Datasheet PDF : 24 Pages
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TYPICAL PERFOR A CE CHARACTERISTICS
LTC1778/LTC1778-1
Current Sense Threshold
vs ITH Voltage
300
VRNG = 2V
200
1.4V
1V
100
0.7V
0.5V
0
–100
–200
0
0.5 1.0 1.5 2.0
ITH VOLTAGE (V)
2.5 3.0
1778 G08
On-Time vs Temperature
300
IION = 30µA
VVON = 0V
250
200
150
100
50
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1778 G22
Maximum Current Sense
Threshold vs RUN/SS Voltage
150
VRNG = 1V
125
100
75
50
25
0
1.5
2
2.5
3
RUN/SS VOLTAGE (V)
3.5
1778 G23
On-Time vs ION Current
10k
VVON = 0V
1k
100
10
1
10
ION CURRENT (µA)
100
1778 G20
Current Limit Foldback
150
VRNG = 1V
125
100
75
50
25
0
0
0.2
0.4
0.6
0.8
VFB (V)
1778 G09
Maximum Current Sense
Threshold vs Temperature
150
VRNG = 1V
140
130
120
110
100
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1778 G11
On-Time vs VON Voltage
1000
IION = 30µA
800
600
400
200
0
0
1
2
3
VON VOLTAGE (V)
1778 G21
Maximum Current Sense
Threshold vs VRNG Voltage
300
250
200
150
100
50
0
0.5 0.75 1.0 1.25 1.5
VRNG VOLTAGE (V)
1.75 2.0
1778 G10
Feedback Reference Voltage
vs Temperature
0.82
0.81
0.80
0.79
0.78
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1778 G12
1778fb
5
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