Is o la t e d Tra n s fo rm e r Drive r
fo r P CMCIA Ap p lic a t io n s
MAX845
__________________________________________Typ ic a l Op e ra t in g Ch a ra c t e ris t ic s
(Typical Operating Circuit, V = 5V, C1 = 0.1µF, C2 = C3 = 0.33µF, T1 = Halo TGM-010P3, CR1 = CR2 = MBR0520, FS = V
,
IN
CC
T
A
= +25°C, unless otherwise noted.)
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
OUTPUT RESISTANCE vs. TEMPERATURE
OUTPUT RESISTANCE vs. TEMPERATURE
40
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
FIGURE 11b
FIGURE 11c
SD = V
CC
35
30
25
20
15
10
V
IN
= 4.5V
V
IN
= 5.5V
-40 -20
0
20 40
60
80 100
-40 -20
0
20
40
60 80
100
-40 -20
0
20
40
60
80 100
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
D1, D2 FREQUENCY vs. TEMPERATURE
SUPPLY CURRENT vs. TEMPERATURE
D1, D2 FREQUENCY vs. TEMPERATURE
1000
950
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
850
800
750
V
= 5.0V
IN
V
= 6.0V
IN
900
V
= 6.0V
IN
FS HIGH
850
800
750
700
650
600
V
= 5.5V
V
= 5.5V
IN
IN
700
650
600
550
500
V
= 5.0V
IN
V
= 5.0V
IN
V
= 4.5V
IN
V
= 4.5V
40
IN
FS LOW
-40 -20
0
20
60
80 100
-40 -20
0
20
40
60
80 100
-40
-20
0 20 40
TEMPERATURE (°C)
60
80 100
TEMPERATURE (°C)
TEMPERATURE (°C)
EFFICIENCY vs. LOAD CURRENT
OUTPUT VOLTAGE vs. LOAD CURRENT
OUTPUT VOLTAGE vs. LOAD CURRENT
100
90
80
70
60
50
40
30
20
10
0
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
15
14
13
12
11
10
9
TRANSFORMERS
USED IN FIGURE 11b
TRANSFORMERS
USED IN FIGURE 11c
FIGURE 11b
FIGURE 11c
TGM-030P3
TGM-030P3
TGM-010P3
TGM-020P3
TGM-010P3
TGM-020P3
8
7
6
5
40 60 80
LOAD CURRENT (mA)
0
20
100 120 140 160
0
20 40 60 80 100 120 140 160
LOAD CURRENT (mA)
0
20 40 60 80 100 120 140 160
LOAD CURRENT (mA)
_______________________________________________________________________________________
3
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
