MAX1776 查看數據表（PDF） - Maxim Integrated
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MAX1776 Datasheet PDF : 13 Pages
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24V, 600mA Internal Switch, 100% Duty Cycle,
Step-Down Converter
Typical Operating Characteristics (continued)
(Circuit of Figure 1, components from Table 3, VIN = +12V, SHDN = IN, TA = +25°C.)
LX WAVEFORM, CIRCUIT 1
VIN = 15V, ILOAD = 500mA
MAX1776 toc22
1A
IL
0
10V
VLX
0
VSHDN
IL
STARTUP WAVEFORM, CIRCUIT 1,
RLOAD = 100Ω
MAX1776 toc23
5V
0
1A
0
6V
4V
VOUT
50mV/div
VOUT
2V
0
2µs/div
2µs/div
EFFICIENCY vs. ILOAD, CIRCUIT 3, VIN = 12V
100
95
L = 22µH
90
85
L = 47µH L = 100µH
80
75
0.10
1
10
100
1000
ILOAD (mA)
EFFICIENCY vs. ILOAD, CIRCUIT 3, VIN = 12V
100
95
L = 22µH, 0.6A
90
L = 47µH, 0.3A
85
L = 10µH, 1.2A
80
75
0.10
1
10
100
1000
ILOAD (mA)
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