el7513 Intersil Corporation, el7513 Datasheet - Page 6

• 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
V
4.7µF
0.1µF
V
4.7µF
0.1µF
CTRL
IN
IN
4.7µF
0.1µF
V
IN
FIGURE 8A. 2 LEGS OF 2 LEDs IN A SERIES
FIGURE 9A. 2 LEGS OF 3 LEDs IN A SERIES
FIGURE 7A. 4 LEDs IN A SERIES
8
2
1
8
2
1
8
2
1
VIN
CNTL
COMP
VIN
CNTL
COMP
VIN
CNTL
COMP
33µH
33µH
L
L
33µH
PGND
VOUT
SGND
PGND
VOUT
SGND
L
PGND
VOUT
SGND
CS
LX
CS
LX
CS
LX
6
4
3
7
5
6
4
3
7
5
6
4
3
7
5
6
BAT54HT1
BAT54HT1
BAT54HT1
(Continued)
5Ω
5Ω
5Ω
1
= 4.7µF, C
5Ω
5Ω
1µF
1µF
1µF
EL7513
FIGURE 7.
FIGURE 8.
FIGURE 9.
2
= 1µF, C
3
= 0.1µF, L = 33µF, V
90
85
80
75
70
90
85
80
75
70
90
85
80
75
70
10
10
5
4 LEDs IN A SERIES
2 LEGS OF 2 LEDs IN A SERIES
2 LEGS OF 3 LEDs IN A SERIES
L=COILCRAFT LPO1704-333CM
L=SUMIDA CMD13D13-33µH
L=COILCRAFT LPO1704-333CM
FIGURE 7B. EFFICIENCY vs I
FIGURE 8B. EFFICIENCY vs I
FIGURE 9B. EFFICIENCY vs I
10
20
20
IN
= 3.3V, V
LED CURRENT (mA)
15
30
30
I
I
O
O
CNTL
V
(mA)
(mA)
IN
=3.3V
= 1V, R
20
40
40
V
V
V
V
V
IN
IN
IN
IN
IN
=4.2V
=2.7V
1
=4.2V
=4.2V
=2.7V
V
25
O
50
O
50
O
= 5Ω, 4 LEDs in a
IN
=2.7V
30
60
60