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Rainbow-electronics MAX782 Manual de usuario Pagina 4

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MAX782
Triple-Output Power-Supply
Controller for Notebook Computers
4 _______________________________________________________________________________________
__________________________________________Typical Operating Characteristics
(Circuit of Figure 1, Transpower transformer type TTI5870, T
A
= +25°C, unless otherwise noted.)
100
70
0.001 0.1 10
EFFICIENCY vs.
+3.3V OUTPUT CURRENT, 200kHz
80
+3.3V OUTPUT CURRENT (A)
EFFICIENCY (%)
90
+5V ON, +5V LOAD = 0mA
I
DD
= 0mA, 
COMPONENTS OF TABLE 5
V
IN
= 6V
V
IN
= 10V
V
IN
= 15V
0.01 1
10
0.01
510 20 30
I
DD
OUTPUT CURRENT vs. INPUT VOLTAGE
COILTRONIX CTX03-12062 TRANSFORMER
0.1
1
INPUT VOLTAGE (V)
I
DD
LOAD CURRENT (A)
15 25
+3V LOAD = 0mA R
SENSE
= 0.020Ω
+5V LOAD = 0A-1A
+5V LOAD = 3A
100
70
0.001 0.1 10
EFFICIENCY vs.
+5V OUTPUT CURRENT, 200kHz
80
+5V OUTPUT CURRENT (A)
EFFICIENCY (%)
90
0.01 1
V
IN
= 6V
V
IN
= 15V
V
IN
= 10V
COMPONENTS,
OF TABLE 5. SYNC = 0V,
+3.3V OFF, I
DD
= 0mA
10000
10
0 5 15 25
QUIESCENT INPUT CURRENT vs.
INPUT VOLTAGE
100
1000
INPUT VOLTAGE (V)
INPUT CURRENT (µA)
10 20 30
+3.3V LOAD = +5V LOAD = 0mA
+5V, +3V ON
+5V, +3V OFF
100
70
0.001 0.01 1
EFFICIENCY vs.
+5V OUTPUT CURRENT, 300kHz
80
90
+5V OUTPUT CURRENT (A)
EFFICIENCY (%)
0.1 10
I
DD
= 0mA
+3.3V OFF
V
IN
= 30V
V
IN
= 15V
V
IN
= 6V
100
70
0.001 0.01 1
EFFICIENCY vs.
+3.3V OUTPUT CURRENT, 300kHz
80
90
+3.3V OUTPUT CURRENT (A)
EFFICIENCY (%)
0.1 10
V
IN
= 30V
V
IN
= 15V
V
IN
= 6V
I
DD
= 0mA
+5V ON
+5V LOAD = 0mA
8
5
0.01 0.1 10
+5V OUTPUT CURRENT vs.
MINIMUM INPUT VOLTAGE, 200kHz
6
7
+5V LOAD CURRENT (A)
MINIMUM INPUT VOLTAGE (V)
1
9
COMPONENTS OF TABLE 4,
SYNC = 0V
I
DD
= 0mA
I
DD
= 60mA
I
DD
= 140mA
I
DD
= 300mA
9
5
0.01 0.1 10
+5V OUTPUT CURRENT vs.
MINIMUM INPUT VOLTAGE, 300kHz
6
7
+5V OUTPUT CURRENT (A)
MINIMUM INPUT VOLTAGE (V)
1
8
I
DD
= 300mA
I
DD
= 140mA
I
DD
= 60mA
I
DD
= 0mA
1000
0.1
100µA 10mA 1A
SWITCHING FREQUENCY vs.
LOAD CURRENT
10
LOAD CURRENT
SWITCHING FREQUENCY (kHz)
100
1mA 100mA
CIRCUIT OF FIGURE 1,
SYNC = REF (300kHz)
ON3 = ON5 = 5V
+5V, V
IN
= 7.5V
1
+5V, V
IN
= 30V
+3.3V, V
IN
= 7.5V
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