MAX1523(2001) データシートの表示（PDF） - Maxim Integrated
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MAX1523 Datasheet PDF : 14 Pages
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Simple SOT23 Boost Controllers
(TA = +25°C, unless otherwise noted.)
EFFICIENCY vs. LOAD CURRENT
(DESIGN EXAMPLE 1)
100
90
Typical Operating Characteristics
EFFICIENCY vs. LOAD CURRENT
(DESIGN EXAMPLE 2)
100
VIN = +4.2V
90
EFFICIENCY vs. LOAD CURRENT
(DESIGN EXAMPLE 3)
100
90
VIN = +2.4V
VIN = +3V
80
80
80
VIN = +3.6V VIN = +2.7V
VIN = +1.8V
70
70
70
60
50
0.1
VOUT = +5V
VIN = 3.3V
1
10
100
1000
LOAD CURRENT (mA)
EFFICIENCY vs. LOAD CURRENT
(DESIGN EXAMPLE 4)
100
60
50
0.1
VOUT = +12V
1
10
100
1000
LOAD CURRENT (mA)
EFFICIENCY vs. LOAD CURRENT
(DESIGN EXAMPLE 5)
100
60
50
0.1
1.75
MAX1524
VOUT = +5V
1
10
100
1000
LOAD CURRENT (mA)
STARTUP INPUT VOLTAGE
vs. OUTPUT CURRENT
90
80
70
60
50
0.1
10
1
0.1
0.01
0.001
0.0001
0
VIN = +4.2V
VIN = +3.6V
VIN = +2.7V
VOUT = +24V
1
10
100
LOAD CURRENT (mA)
NO-LOAD INPUT CURRENT
vs. INPUT VOLTAGE
BOOTSTRAPPED
90
VIN = +3.0V
80
70
VIN = +2.4V
60
50
0.1
VIN = +1.8V
MAX1524
VOUT = +3.3V
1
10
100
LOAD CURRENT (mA)
SWITCHING WAVEFORM
(CONTINUOUS CONDUCTION)
MAX1522/3/4 toc08
A
1.50
1.25
1.00
0.75
0
VOUT = +3.3V
BOOTSTRAPPED
RESISTIVE LOADS
25
50
75
100
LOAD CURRENT (mA)
SWITCHING WAVEFORM
(DISCONTINUOUS CONDUCTION)
MAX1522/3/4 toc09
A
B
B
NONBOOTSTRAPPED
C
C
1
2
3
4
5
INPUT VOLTAGE (V)
400ns/div
VIN = +3.3V, VOUT = +5V, IOUT = 350mA
A : VOUT, 200mV/div, AC-COUPLED
B : VLX, 5V/div
C : IL, 0.5A/div
4µs/div
VIN = +3.3V, VOUT = +24V, IOUT = 10mA
A : VOUT, 200mV/div, AC-COUPLED
B : VLX, 10V/div
C : IL, 0.5A/div
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