MAX845 Ver la hoja de datos (PDF) - Maxim Integrated
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MAX845 Datasheet PDF : 16 Pages
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Isolated Transformer Driver
for PCMCIA Applications
__________________________________________Typical Operating Characteristics
(Typical Operating Circuit, VIN = 5V, C1 = 0.1µF, C2 = C3 = 0.33µF, T1 = Halo TGM-010P3, CR1 = CR2 = MBR0520, FS = VCC,
TA = +25°C, unless otherwise noted.)
OUTPUT RESISTANCE vs. TEMPERATURE
40
FIGURE 11c
35
VIN = 4.5V
30
25
20
VIN = 5.5V
15
10
-40 -20
0 20 40 60 80 100
TEMPERATURE (°C)
OUTPUT RESISTANCE vs. TEMPERATURE
7.5
FIGURE 11b
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
-40 -20
0 20 40 60 80 100
TEMPERATURE (°C)
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
1.6
SD = VCC
1.4
1.2
1.0
0.8
0.6
0.4
0.2
-40 -20
0 20 40 60 80 100
TEMPERATURE (°C)
D1, D2 FREQUENCY vs. TEMPERATURE
1000
950
900
VIN = 6.0V
850
VIN = 5.5V
800
VIN = 5.0V
750
700
VIN = 4.5V
650
600
-40 -20
0 20 40 60
TEMPERATURE (°C)
80 100
D1, D2 FREQUENCY vs. TEMPERATURE
850
VIN = 5.0V
800
750
FS HIGH
700
650
600
550
500
-40 -20
FS LOW
0 20 40 60 80 100
TEMPERATURE (°C)
SUPPLY CURRENT vs. TEMPERATURE
1.7
1.6
1.5
VIN = 6.0V
1.4
1.3
VIN = 5.5V
1.2
1.1
VIN = 5.0V
1.0
0.9
VIN = 4.5V
0.8
-40 -20
0 20 40 60
TEMPERATURE (°C)
80 100
100
90
80
70
60
50
40
30
20
10
0
0
EFFICIENCY vs. LOAD CURRENT
FIGURE 11b
FIGURE 11c
20 40 60 80 100 120 140 160
LOAD CURRENT (mA)
OUTPUT VOLTAGE vs. LOAD CURRENT
7.5
7.0
TRANSFORMERS
USED IN FIGURE 11b
6.5
TGM-030P3
6.0
5.5
5.0
4.5
TGM-010P3
4.0
3.5
TGM-020P3
3.0
2.5
0
20 40 60 80 100 120 140 160
LOAD CURRENT (mA)
OUTPUT VOLTAGE vs. LOAD CURRENT
15
14
TRANSFORMERS
USED IN FIGURE 11c
13
12 TGM-030P3
11
10
9
TGM-010P3
8
7
TGM-020P3
6
5
0 20 40 60 80 100 120 140 160
LOAD CURRENT (mA)
_______________________________________________________________________________________ 3
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