EL7554 查看數據表（PDF） - Intersil
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EL7554 Datasheet PDF : 14 Pages
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EL7554
Typical Performance Curves
VIN = VD = 3.3V, VO = 1.8V, IO = 4A, L = 2.2µH, CIN = 2x10µF, COUT = 47µF, COSC = 220pF, TA = 25°C unless otherwise noted.
1
0.95
0.9
0.85
0.8
0.75
0.7
0.65
0.6
0
VO=3.3V
VO=2.5V
VO=0.8V
VO=1V
VO=1.2V
VO=1.8V
1
2
3
4
IO (mA)
100
95
90
85
80
75
70
65
60
0
VO=2.5V
VO=0.8V
VO=1V
VO=1.2V
VO=1.8V
1
2
3
4
IO (mA)
FIGURE 1. EFFICIENCY (VIN = 5V)
FIGURE 2. EFFICIENCY (VIN = 3.3V)
1.266
1.264
1.262
1.26
1.258
1.256
1.254
1.252
1.25
1.248
1.246
-50
VDD=3.3V
VDD=5V
0
50
100
150
JUNCTION TEMPERATURE
FIGURE 3. VREF vs TEMPERATURE
1.6
1.5
VDD=3.3V
1.4
1.3
1.2
1.1
VDD=5V
1
0.9
-50
0
50
100
150
JUNCTION TEMPERATURE
FIGURE 4. VTJ vs TEMPERATURE
4
3.5
3
VEN_HI
2.5
2
1.5
VEN_LOW
1
3
3.5
4
4.5
5
5.5
6
VDD (V)
FIGURE 5. VEN_HI & VEN_LOW vs VDD
6
1200
1000
800
600
VDD=5V
500 VDD=3.3V
200
0
100 200 300 400 500 600 700
COSC (pF)
FIGURE 6. FS vs COSC
FN7360.4
May 8, 2006
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