MAX1896 データシートの表示（PDF） - Maxim Integrated
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MAX1896 Datasheet PDF : 10 Pages
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1.4MHz SOT23 Current-Mode
Step-Up DC-DC Converter
Typical Operating Characteristics
(Circuit of Figure 1, VIN = 3.3V, TA = +25°C, unless otherwise noted.)
EFFICIENCY vs. OUTPUT CURRENT
100
EFFICIENCY vs. OUTPUT CURRENT
100
EFFICIENCY vs. OUTPUT CURRENT
100
90
90
90
80
80
80
70
70
70
60
50
1
2.0
VIN = 3.3V,
VOUT = 5V,
CIRCUIT OF FIGURE 1
10
100
1000
OUTPUT CURRENT (mA)
NO LOAD SUPPLY CURRENT
vs. INPUT VOLTAGE
60
50
1
VIN = 3.3V,
VOUT = 13V,
CIRCUIT OF FIGURE 3
10
100
1000
OUTPUT CURRENT (mA)
OUTPUT VOLTAGE vs. OUTPUT CURRENT
13.10 CIRCUIT OF FIGURE 3
60
50
1
VIN = 5V,
VOUT = 13V,
CIRCUIT OF FIGURE 3
10
100
1000
OUTPUT CURRENT (mA)
LOAD TRANSIENT (VOUT = 13V)
1.5
13.05
1.0
13.00
0.5
VOUT = 13V,
CIRCUIT OF FIGURE 3
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
12.95
12.90
0
TA = +25°C
TA = +85°C
TA = -40°C
LOAD
CURRENT
100mA/div
OUTPUT
VOLTAGE
AC-COUPLED
200mV/div
INDUCTOR
CURRENT
500mA/div
50
100
150
200
OUTPUT CURRENT (mA)
200µs/div
CFF = 100pF, COUT = 0.1µF CERAMIC + 10µF CERAMIC
LOAD
CURRENT
200mA/div
LOAD TRANSIENT (VOUT = 5V)
SHDN
5V/div
STARTUP WAVEFORM
WITHOUT SOFT-START
STARTUP WAVEFORM
WITH SOFT-START
IOUT = 10mA
SHDN
5V/div
OUTPUT
VOLTAGE
AC-COUPLED
200mV/div
OUTPUT
VOLTAGE
5V/div
OUTPUT
VOLTAGE
5V/div
INDUCTOR
CURRENT
500mA/div
INDUCTOR
CURRENT
500mA/div
INDUCTOR
CURRENT
500mA/div
400µs/div
COUT = 0.1µF CERAMIC + 22µF TANTALUM
100µs/div
VIN = 3.3V, COUT = 0.1µF CERAMIC + 3.3µF TANTALUM
CIRCUIT OF FIGURE 3
2ms/div
VIN = 3.3V, CSS = 33nF,
COUT = 3.3µF TANTALUM + 0.1µF CERAMIC
CIRCUIT OF FIGURE 3
4 _______________________________________________________________________________________
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