MAX8734 Просмотр технического описания (PDF) - Maxim Integrated
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MAX8734
Maxim Integrated
MAX8734 Datasheet PDF : 32 Pages
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High-Efficiency, Quad-Output, Main Power-
Supply Controllers for Notebook Computers
Typical Operating Characteristics (continued)
(Circuit of Figure 1 and Figure 2, no load on LDO5, LDO3, OUT3, OUT5, and REF, V+ = 12V, ON3 = ON5 = VCC, SHDN = V+,
RCS = 7mΩ, VILIM_ = 0.5V, TA = +25°C, unless otherwise noted.)
3.3V OUTPUT SWITCHING FREQUENCY
vs. LOAD CURRENT (MAX8732)
360
VIN = 7V
320
280 PWM MODE
240
200
160
120
80
ULTRASONIC MODE
40
PFM MODE
0
0.001
0.01
0.1
1
10
LOAD CURRENT (A)
5V OUTPUT SWITCHING
FREQUENCY vs. LOAD CURRENT (MAX8732)
250
VIN = 24V
225
200 PWM MODE
175
150
125
100
75
50
ULTRASONIC MODE
25
0
0.001 0.01
PFM MODE
0.1
1
10
LOAD CURRENT (A)
3.3V OUTPUT SWITCHING
FREQUENCY vs. LOAD CURRENT (MAX8732)
400
360
VIN = 24V
320 PWM MODE
280
240
200
160
120
80
ULTRASONIC MODE
40
PFM MODE
0
0.001 0.01
0.1
1
10
LOAD CURRENT (A)
5V OUTPUT SWITCHING
FREQUENCY vs. LOAD CURRENT (MAX8733)
500
450
PWM MODE
400
VIN = 7V
350
300
250
200
150
100
50
IDLE MODE
0
0.001 0.01
0.1
1
10
LOAD CURRENT (A)
3.3V OUTPUT SWITCHING
FREQUENCY vs. LOAD CURRENT (MAX8733)
600
550 PWM MODE
500
VIN = 7V
450
400
350
300
ULTRASONIC MODE
250
200
150
100
50
PFM MODE
0
0.001
0.01
0.1
1
10
LOAD CURRENT (A)
5V OUTPUT SWITCHING
FREQUENCY vs. LOAD CURRENT (MAX8733)
500
VIN = 24V
450
400
PWM MODE
350
300
250
200
ULTRASONIC MODE
150
100
50
PFM MODE
0
0.001 0.01
0.1
1
10
LOAD CURRENT (A)
3.3V OUTPUT SWITCHING
FREQUENCY vs. LOAD CURRENT (MAX8733)
600
550
VIN = 24V
500
450 PWM MODE
400
350
300
250
200
150 ULTRASONIC MODE
100
50
IDLE MODE
0
0.001
0.01
0.1
1
10
LOAD CURRENT (A)
OUT5 VOLTAGE REGULATION
vs. LOAD CURRENT (MAX8732)
5.19
ULTRASONIC
5.17
5.15
5.13
IDLE MODE
5.11
5.09
FORCED-PWM
5.07
5.05
0.001
0.01
0.1
1
10
LOAD CURRENT (A)
OUT3 VOLTAGE REGULATION
vs. LOAD CURRENT (MAX8732)
3.41
3.40
ULTRASONIC
3.39
3.38
3.37
IDLE MODE
3.36 FORCED-PWM
3.35
3.34
3.33
0.001
0.01
0.1
1
10
LOAD CURRENT (A)
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