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
(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.)
5V OUTPUT EFFICIENCY
vs. LOAD CURRENT (MAX8732)
100
90
A
80
C
70
B
E
60
D
F
50
40
30
20
10
0
0.001
A: IDLE MODE, VIN = 7V
B: IDLE MODE, VIN = 12V
C: IDLE MODE, VIN = 24V
D: PWM MODE, VIN = 7V
E: PWM MODE, VIN = 12V
F: PWM MODE, VIN = 24V
0.01
0.1
1
10
LOAD CURRENT (A)
3.3V OUTPUT EFFICIENCY
vs. LOAD CURRENT (MAX8733)
100
90
80
A
70
60
C
50
40
B
D
30
20
10
0
0.001
F
0.01
E
A: IDLE MODE, VIN = 7V
B: IDLE MODE, VIN = 12V
C: IDLE MODE, VIN = 24V
D: PWM MODE, VIN = 7V
E: PWM MODE, VIN = 12V
F: PWM MODE, VIN = 24V
0.1
1
10
LOAD CURRENT (A)
5V OUTPUT EFFICIENCY
vs. LOAD CURRENT (MAX8733)
100
90
A
80
C
70
B
E
60
D
F
50
40
30
20
10
0
0.001
A: IDLE MODE, VIN = 7V
B: IDLE MODE, VIN = 12V
C: IDLE MODE, VIN = 24V
D: PWM MODE, VIN = 7V
E: PWM MODE, VIN = 12V
F: PWM MODE, VIN = 24V
0.01
0.1
1
10
LOAD CURRENT (A)
PWM NO-LOAD BATTERY CURRENT
vs. INPUT VOLTAGE
40
38
36
34
MAX8733
32
30
28
MAX8732
26
24
22
20
7
10 13 16 19 22 25
INPUT VOLTAGE (V)
3.3V OUTPUT EFFICIENCY
vs. LOAD CURRENT (MAX8732)
100
90
80
A
70
60
50
40
B
30
20
10
0
0.001
C
E
D
A: IDLE MODE, VIN = 7V
B: IDLE MODE, VIN = 12V
C: IDLE MODE, VIN = 24V
F D: PWM MODE, VIN = 7V
E: PWM MODE, VIN = 12V
F: PWM MODE, VIN = 24V
0.01
0.1
1
10
LOAD CURRENT (A)
IDLE MODE™ NO-LOAD BATTERY CURRENT
vs. INPUT VOLTAGE
0.40
0.37
0.34
0.31
0.28
MAX8733
0.25
0.22
MAX8732
0.19
0.16
0.13
0.10
7 10 13 16 19 22 25
INPUT VOLTAGE (V)
STANDBY INPUT CURRENT
vs. INPUT VOLTAGE
190
188
186
184
182 MAX8732
180
178
176 MAX8733
174
172
170
7 10 13 16 19 22 25
INPUT VOLTAGE (V)
SHUTDOWN INPUT CURRENT
vs. INPUT VOLTAGE
10.0
9.5
9.0
8.5
8.0 MAX8732
7.5
MAX8733
7.0
6.5
6.0
5.5
5.0
7 10 13 16 19 22 25
INPUT VOLTAGE (V)
5V OUTPUT SWITCHING FREQUENCY
vs. LOAD CURRENT (MAX8732)
250
VIN = 7V
225
200
PWM MODE
175
150
125
100
75
50 ULTRASONIC MODE
25
PFM MODE
0
0.001
0.01
0.1
1
10
LOAD CURRENT (A)
8 _______________________________________________________________________________________
Idle Mode is a trademark of Maxim Integrated Products, Inc.
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