EL7640, EL7641, EL7642
Typical Performance Curves
94
92
90
88
86
84
82
80
78
100
90
80
V
=5V
IN
70
60
50
40
30
20
10
0
V
=3V
IN
V
=5V
IN
V
=3V
IN
0
200
400
600
800
1000 1200
0
200
400
600
800
1000 1200
LOAD CURRENT (mA)
LOAD CURRENT (mA)
FIGURE 1. BOOST EFFICIENCY AT V
= 12V (PI MODE)
FIGURE 2. BOOST EFFICIENCY AT V
= 12V (P MODE)
OUT
OUT
0
0
-2
-0.1
V
=3V
IN
V
=5.0V
IN
-4
-6
-0.2
-0.3
-0.4
-0.5
-0.6
-8
V
=3.3V
IN
V
=5V
IN
-10
-12
-14
0
200
400
600
800
1000 1200
0
200
400
600
800
1000 1200
LOAD CURRENT (mA)
LOAD CURRENT (mA)
FIGURE 3. BOOST LOAD REGULATION vs LOAD CURRENT
(PI MODE)
FIGURE 4. BOOST LOAD REGULATION vs LOAD CURRENT
(P MODE)
0.12
0.1
3.5
3
2.5
2
0.08
0.06
0.04
0.02
0
1.5
1
0.5
0
3
3.5
4
4.5
5
5.5
6
3
3.5
4
4.5
5
5.5
6
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
FIGURE 5. BOOST LINE REGULATION vs INPUT VOLTAGE
(PI MODE)
FIGURE 6. BOOST LINE REGULATION vs INPUT VOLTAGE
(P MODE)
FN7415.1
7
September 26, 2005
INTERSIL [ Intersil ]
