el7513 Intersil Corporation, el7513 Datasheet - Page 5

• Manufacturer Part Number: el7513
• Description: White Led Step-up Regulator
• Manufacturer: Intersil Corporation

Typical Performance Curves
All performance curves and waveforms are taken with C
series; unless otherwise specified.
V
V
CTRL
CTRL
V
4.7µF
0.1µF
4.7µF
0.1µF
V
IN
IN
35
30
25
20
15
10
5
0
0
FIGURE 5A. 2 LEDs IN A SERIES
FIGURE 6A. 3 LEDs IN A SERIES
FIGURE 3. I
8
2
1
0.5
8
2
1
VIN
CNTL
COMP
VIN
CNTL
COMP
33µH
33µH
L
L
PGND
VOUT
SGND
PGND
VOUT
SGND
1
CS
V
LX
CS
LED
LX
5
CNTL
4
3
7
5
6
4
3
7
5
6
vs V
(V)
1.5
BAT54HT1
BAT54HT1
CNTL
(Continued)
2
5Ω
5Ω
1
= 4.7µF, C
2.5
1µF
1µF
EL7513
FIGURE 5.
FIGURE 6.
2
= 1µF, C
3
= 0.1µF, L = 33µF, V
14.8
14.6
14.4
14.2
15.8
15.6
15.4
15.2
16
14
15
90
85
80
75
70
90
85
80
75
70
2.5
V
5
5
CNTL
2 LEDs IN A SERIES
3 LEDs IN A SERIES
L=COILCRAFT LPO1704-333CM
L=COILCRAFT LPO1704-333CM
V
V
FIGURE 5B. EFFICIENCY vs I
FIGURE 6B. EFFICIENCY vs I
IN
=1V
IN
=4.2V
=4.2V
3
FIGURE 4. I
10
10
IN
= 3.3V, V
3.5
V
V
15
15
IN
IN
I
I
V
=2.7V
=2.7V
O
O
CNTL
IN
LED
(mA)
(mA)
4
(V)
vs V
= 1V, R
20
20
IN
4.5
1
25
O
25
O
= 5Ω, 4 LEDs in a
5
30
30
5.5