el7630 Intersil Corporation, el7630 Datasheet - Page 3

• Manufacturer Part Number: el7630
• Description: White Led Boost Regulator
• Manufacturer: Intersil Corporation

Typical Application
Typical Performance Curves
2.7V~5.5V
OFF/ON
V
24.68
24.66
24.64
24.62
24.58
24.56
FIGURE 2. QUIESCENT CURRENT (ENABLE)
IN
24.7
24.6
0.7
0.6
0.5
0.4
0.3
0.2
0.1
1µF
C1
0
0
2.5
FIGURE 4. LINE REGULATION
1
3
VDD
ENAB
EL7630
GND
22µH
L1
FIGURE 1. TYPICAL APPLICATION CIRCUIT AND EFFICIENCY vs LED CURRENT
2
3.5
LX
FB
3
V
V
IN
IN
3
4
(V)
(V)
4.75
R
D1
SET
Ω
4.5
4
LEDs
5
5
C2
0.22µF
5.5
6
EL7630
FIGURE 5. SWITCHING FREQUENCY vs TEMPERATURE
24.595
24.585
24.575
24.565
1.34
1.32
1.28
1.26
1.24
1.22
24.59
24.58
24.57
24.56
1.3
1.2
90
85
80
75
70
65
24.6
FIGURE 3. LOAD REGULATION (V
-40
0
0
5
5
LED CURRENT (mA)
TEMPERATURE (°C)
10
10
V
15
OUT
10
(V)
20
IN
15
=4V)
60
25
February 22, 2006
30
FN7371.1
20