MAX730AESA 查看數據表（PDF） - Maxim Integrated
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MAX730AESA Datasheet PDF : 16 Pages
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5V, Step-Down,
Current-Mode PWM DC-DC Converters
__________________________________________Typical Operating Characteristics
(Circuit of Figure 3, TA = +25°C, unless otherwise noted.)
MAX730A
EFFICIENCY vs. OUTPUT CURRENT
100
(NOTES 3, 6)
MAX738A
EFFICIENCY vs. OUTPUT CURRENT
100
(NOTES 3, 6)
MAX744A
EFFICIENCY vs. OUTPUT CURRENT
100
(NOTE 3)
90
V+ = 5.5V
80
V+ = 7V
V+ = 9V
70
V+ = 11V
90
V+ = 6V
80
V+ = 8V
V+ = 12V
70
V+ = 16V
90
V+ = 6.0V
80
V+ = 9.0V
V+ = 12.0V
70
V+ = 16.0V
60
0
200 400 600 800 1000
OUTPUT CURRENT (mA)
MAXIMUM OUTPUT CURRENT vs.
SUPPLY VOLTAGE
1400
(NOTES 3, 6)
1200
MAX744A
1000
MAX738A
MAX730A
60
0
200 400 600 800 1000
OUTPUT CURRENT (mA)
MAXIMUM OUTPUT CURRENT vs.
SUPPLY VOLTAGE, NO R1
1400
(NOTES 3, 6)
1200
1000
800
MAX744A
MAX738A
600
60
0
200 400 600 800 1000
OUTPUT CURRENT (mA)
QUIESCENT SUPPLY CURRENT
vs. TEMPERATURE
3.0
MAX730A, V+ = 9.0V
MAX738A, V+ = 12.0V
2.5 MAX744A, V+ = 12.0V
2.0
1.5
1.0
800
4
6 8 10 12 14 16
SUPPLY VOLTAGE (V)
400 MAX730A
200
4
6
8 10 12 14 16
SUPPLY VOLTAGE (V)
0.5
(NOTES 4, 5)
0
-60 -40 -20 0 20 40 60 80 100 120 140 160
TEMPERATURE (°C)
MAX738A/MAX744A
QUIESCENT SUPPLY CURRENT
vs. SUPPLY VOLTAGE
2.5
2.0
1.5
1.0
UNDERVOLTAGE
LOCKOUT HYSTERESIS
0.5
UNDERVOLTAGE
LOCKOUT ENABLED
0
0 2 4 6 8 10 12 14 16
MAX738A/MAX744A
PEAK INDUCTOR CURRENT
vs. OUTPUT CURRENT
1000
800
600
400 V+ = 6.6V
V+ = 8.0V TO 16.0V
200
0
0
L1 = 100µH
C4 = 150µF
100 200 300 400 500 600 700 800
STANDBY SUPPLY CURRENT
vs. TEMPERATURE
20
18 V+ = 16V
MAX738A/MAX744A
16 ONLY
(NOTES 4, 5)
14
12
V+ = 12V
MAX738A/MAX744A
10
ONLY
8
6
V+ = 9V
4
2
V+ = 6V
0
-60 -40 -20 0 20 40 60 80 100 120 140 160
4 _______________________________________________________________________________________
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