LT1949-1EMS8 Ver la hoja de datos (PDF) - Linear Technology
Número de pieza
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Fabricante
LT1949-1EMS8 Datasheet PDF : 8 Pages
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TYPICAL PERFOR A CE CHARACTERISTICS
Oscillator Frequency
1.3
1.2
85°C
25°C
1.1
–40°C
1.0
0.9
0
2
4
6
8 10 12
INPUT VOLTAGE (V)
1949-1 G01
Switch Voltage Drop (VCESAT)
1.0
0.8
0.6
85°C
25°C
0.4
–40°C
0.2
0
0 0.2 0.4 0.6 0.8 1.0 1.2
SWITCH CURRENT (A)
1949-1 G04
Quiescent Current, SHDN = 0V
60
55
50
45
40
35
30
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
1949-1 G07
Switch Current Limit
1.3
1.2
1.1
1.0
0.9
0.8
0
20
40
60
80 100
DUTY CYCLE (%)
1949-1 G02
Feedback Voltage
1.25
1.24
1.23
1.22
1.21
1.20
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
1949-1 G05
FB Pin Bias Current
60
55
50
45
40
35
30
25
20
15
10
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
1949-1 G08
LT1949-1
Switch Current Limit,
Duty Cycle = 30%
1.3
1.2
1.1
1.0
0.9
0.8
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
1949-1 G03
Quiescent Current, SHDN = 2V
8.5
8.0
7.5
7.0
6.5
6.0
5.5
5.0
4.5
–50
–25 0 25 50
TEMPERATURE (°C)
75 100
1949-1 G06
SHDN Pin Current
2
1
0
–2
–4
–6
0
1
2
3
4
5
6
SHDN PIN VOLTAGE (V)
1949-1 G09
3
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