AIC1554 데이터 시트보기 (PDF) - Analog Intergrations
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AIC1554 Datasheet PDF : 15 Pages
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AIC1555
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
300
250
μ
200
VOUT=1.8V
150
SYNC/PWM=IN
100
SYNC/PWM=GND
50
0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0
Supply Voltage (V)
Fig. 13 DC Supply Current vs. Supply Voltage
100
90 PWM/PFM
80
70
60
PWM
50
40
30
VIN=3.6V
20
VOUT=1.8V
10
0.1
1
10
100
Load current (mA)
Fig. 14 Efficiency vs. Load current
1000
1000
900
800
700
600
500
2250 2000 1750 1500 1250 1000 750
Tuning Resistor RT (kΩ)
500 250
Fig. 15 Operation Frequency vs. Tuning Resistor
Fig. 16 Over Current Protection
VOUT=1.8V;
ILOAD=50mA to 500mA;
SYNC/MODE=IN
Fig. 17 Load Transient Response
VOUT=1.8V;
ILOAD=50mA to 500mA;
SYNC/MODE=GND
Fig. 18 Load Transient Response
7
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