EL7531(2005) 데이터 시트보기 (PDF) - Intersil
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EL7531 Datasheet PDF : 10 Pages
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EL7531
Performance Curves and Waveforms (Continued)
All waveforms are taken at VIN=3.3V, VO=1.8V, IO=1A with component values shown on page 1 at room ambient temperature, unless otherwise
noted.
0.1%
0.0%
-0.1%
-0.2%
VIN=3.3V IO=0A
VIN=5V IO=0A
-0.3%
-0.4%
VIN=3.3V IO=1A
-0.5%
-0.6%
VIN=5V IO=1A
-0.7%
-50
0
50
100
150
TJ (°C)
FIGURE 7. PWM MODE LOAD/LINE REGULATIONS vs
JUNCTION TEMPERATURE
12
10
8
6
4
2
0
2.5
3
3.5
4
4.5
5
VS (V)
FIGURE 8. NO LOAD QUIESCENT CURRENT (PWM MODE)
140
130
VO=1.8V
VO=3.3V
120
110
100 VO=1.5V
90
VO=1.2V VO=1.0V
VO=0.8V
80
70
60
50
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
VS (V)
FIGURE 9. NO LOAD QUIESCENT CURRENT (PFM MODE)
100
1.4MHz
80
5MHz
12MHz
60
40
20
0
0
200 400 600 800 1K 1.2K
IO (mA)
FIGURE 10. EFFICIENCY vs IO (PWM MODE)
1
12MHz
0.6
1.4MHz
0.2
5MHz
0
-0.2
-0.6
0
200 400 600 800 1K 1.2K
IO (mA)
FIGURE 11. LOAD REGULATION (PWM MODE)
5
0.5
0.3
0.1
1.4MHz
-0.1
12MHz
-0.3
5MHz
-0.5
2.5
3
3.5
4
4.5
5
5.5
VIN (V)
FIGURE 12. LINE REGULATION @ 500mA (PWM MODE)
FN7428.6
August 5, 2005
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