el7513 Intersil Corporation, el7513 Datasheet - Page 8

• 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.
Waveforms
All performance curves and waveforms are taken with C
series; unless otherwise specified.
4.7µF
0.1µF
V
CTRL
V
V
IN
CNTL
V
I
LED
V
CNTL
I
I
IN
IN
LED
V
O
FIGURE 13A. 3 LEGS of 4 LEDs in a SERIES
FIGURE 16. TRANSIENT RESPONSE
8
2
1
VIN
CNTL
COMP
15µH
FIGURE 14. START-UP
L
PGND
SGND
VOUT
CS
LX
10ms/DIV
4
3
7
5
6
20ms/DIV
BAT54HT1
8
5Ω
(Continued)
5Ω
1
1
2V/DIV
50mA/DIV
1V/DIV
10mA/DIV
= 4.7µF, C
= 4.7µF, C
2V
1V
14.2V
12.9V
30mA
15mA
5Ω
1µF
FIGURE 13.
EL7513
2
2
= 1µF, C
= 1µF, C
3
3
= 0.1µF, L = 33µF, V
= 0.1µF, L = 33µF, V
∆V
∆V
V
V
CNTL
LX
I
IN
I
O
LED
L
I
IN
FIGURE 17. CONTINUOUS CONDUCTION MODE
I
LED
C
3
=15mA
95
90
85
80
75
70
=4700pF
15
3 LEGS OF 4 LEDs IN A SERIES
FIGURE 13B. EFFICIENCY vs I
L=SUMIDA CMD13D13-15µH
FIGURE 15. SHUT-DOWN
IN
IN
V
V
IN
= 3.3V, V
35
= 3.3V, V
IN
=4.2V
=2.7V
1µs/DIV
0.1ms/DIV
I
O
CNTL
CNTL
55
(mA)
= 1V, R
= 1V, R
75
1
1
= 5Ω, 4 LEDs in a
= 5Ω, 4 LEDs in a
O
95
10mV/DIV
100mA/DIV
10V/DIV
50mV/DIV
50mA/DIV
1V/DIV
10mA/DIV