MAX8745 데이터 시트보기 (PDF) - Maxim Integrated
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MAX8745
Maxim Integrated
MAX8745 Datasheet PDF : 36 Pages
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High-Efficiency, Quad-Output, Main Power-
Supply Controllers for Notebook Computers
Typical Operating Characteristics
(Circuit of Figure 1, VIN = 12V, SKIP = GND, FSEL = REF, TA = +25°C, unless otherwise noted.)
5V OUTPUT EFFICIENCY
vs. LOAD CURRENT
100
7V
90
12V
80
70
60
50
0.001
20V
SKIP MODE
PWM MODE
0.01
0.1
1
10
LOAD CURRENT (A)
3.3V OUTPUT EFFICIENCY
vs. LOAD CURRENT
100
7V
90
12V
80
20V
70
60
50
0.001
SKIP MODE
PWM MODE
0.01
0.1
1
10
LOAD CURRENT (A)
OUTPUT VOLTAGE DEVIATION
vs. INPUT VOLTAGE
3
2
3.3V OUTPUT
1
0
5.0V OUTPUT
-1
-2
-3
0
4
8
12
16
20
INPUT VOLTAGE (V)
5V OUTPUT EFFICIENCY
vs. LOAD CURRENT
100
SKIP MODE
90
80
70
LOW-NOISE
PWM MODE
MODE
60
50
0.001
0.01
0.1
1
10
LOAD CURRENT (A)
3.3V OUTPUT EFFICIENCY
vs. LOAD CURRENT
100
SKIP MODE
90
80
70
LOW-NOISE PWM MODE
60
MODE
50
0.001
0.01
0.1
1
10
LOAD CURRENT (A)
NO-LOAD INPUT SUPPLY CURRENT
vs. INPUT VOLTAGE
100
PWM MODE
5V OUTPUT VOLTAGE
vs. LOAD CURRENT
5.10
SKIP MODE
5.05
LOW-NOISE MODE
5.00
PWM MODE
4.95
4.90
0.0 1.0 2.0 3.0 4.0 5.0
LOAD CURRENT (A)
3.3V OUTPUT VOLTAGE
vs. LOAD CURRENT
3.39
SKIP MODE
3.36
LOW-NOISE MODE
3.33
3.30
PWM MODE
3.27
3.24
0
1
2
3
4
5
LOAD CURRENT (A)
STANDBY AND SHUTDOWN INPUT CURRENT
vs. INPUT VOLTAGE
100
STANDBY (ONx = GND)
SHUTDOWN
10
10
(SHDN = GND)
LOW-NOISE MODE
SKIP MODE
1
0
4
8
12
16
20
INPUT VOLTAGE (V)
1
0
4
8
12
16
20
INPUT VOLTAGE (V)
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