MAX782 Просмотр технического описания (PDF) - Maxim Integrated
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MAX782 Datasheet PDF : 32 Pages
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Triple-Output Power-Supply
Controller for Notebook Computers
__________________________________________Typical Operating Characteristics
(Circuit of Figure 1, Transpower transformer type TTI5870, TA = +25°C, unless otherwise noted.)
EFFICIENCY vs.
+5V OUTPUT CURRENT, 200kHz
100
VIN = 6V
VIN = 10V
90
VIN = 15V
80
70
0.001
COMPONENTS,
OF TABLE 5. SYNC = 0V,
+3.3V OFF, IDD = 0mA
0.01
0.1
1
10
+5V OUTPUT CURRENT (A)
EFFICIENCY vs.
+3.3V OUTPUT CURRENT, 200kHz
100
+5V ON, +5V LOAD = 0mA
IDD = 0mA,
COMPONENTS OF TABLE 5
90
VIN = 6V
VIN = 10V
VIN = 15V
80
EFFICIENCY vs.
+5V OUTPUT CURRENT, 300kHz
100
IDD = 0mA
+3.3V OFF
VIN = 6V
90 VIN = 15V
VIN = 30V
80
IDD OUTPUT CURRENT vs. INPUT VOLTAGE
COILTRONIX CTX03-12062 TRANSFORMER
10
+3V LOAD = 0mA RSENSE = 0.020Ω
+5V LOAD = 0A-1A
1
+5V LOAD = 3A
0.1
70
0.001
0.01
0.1
1
10
+5V OUTPUT CURRENT (A)
EFFICIENCY vs.
+3.3V OUTPUT CURRENT, 300kHz
100
IDD = 0mA
+5V ON
+5V LOAD = 0mA
VIN = 6V
90
VIN = 15V
VIN = 30V
80
0.01
5
10
15
20
25
30
INPUT VOLTAGE (V)
10000
QUIESCENT INPUT CURRENT vs.
INPUT VOLTAGE
+3.3V LOAD = +5V LOAD = 0mA
1000
+5V, +3V ON
100
+5V, +3V OFF
70
0.001 0.01
0.1
1
10
+3.3V OUTPUT CURRENT (A)
+5V OUTPUT CURRENT vs.
MINIMUM INPUT VOLTAGE, 300kHz
9
IDD = 300mA
8
7
IDD = 140mA
6
5
0.01
IDD = 60mA
IDD = 0mA
0.1
1
10
+5V OUTPUT CURRENT (A)
70
0.001
0.01
0.1
1
10
+3.3V OUTPUT CURRENT (A)
+5V OUTPUT CURRENT vs.
MINIMUM INPUT VOLTAGE, 200kHz
9
COMPONENTS OF TABLE 4,
SYNC = 0V
8
IDD = 300mA
7
IDD = 140mA
6
5
0.01
IDD = 60mA
IDD = 0mA
0.1
1
10
+5V LOAD CURRENT (A)
10
0
5 10 15 20 25 30
INPUT VOLTAGE (V)
SWITCHING FREQUENCY vs.
LOAD CURRENT
1000
CIRCUIT OF FIGURE 1,
SYNC = REF (300kHz)
ON3 = ON5 = 5V
100
+5V, VIN = 7.5V
10 +5V, VIN = 30V
1
+3.3V, VIN = 7.5V
0.1
100µA 1mA
10mA 100mA
1A
LOAD CURRENT
4 _______________________________________________________________________________________
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