EL7513(2008) Ver la hoja de datos (PDF) - Intersil
Número de pieza
componentes Descripción
Fabricante
EL7513 Datasheet PDF : 12 Pages
| |||
EL7513
Typical Performance Curves (Continued)
All performance curves and waveforms are taken with C1 = 4.7µF, C2 = 1µF, C3 = 0.1µF, L = 33µF, VIN = 3.3V, VCNTL = 1V, R1 = 5Ω, 4 LEDs in a
series; unless otherwise specified.
VIN
4.7µF
L
BAT54HT1
33µH
1µF
2 LEGS OF 4 LEDs IN A SERIES
90
8 VIN
LX 4
VIN = 4.2V
85
VCTRL
0.1µF
VOUT 3
CS 7
2 CNTL PGND 5
1 COMP SGND 6
5Ω 5Ω
FIGURE 10A. 2 LEGS OF 4 LEDs IN A SERIES
FIGURE 10.
80
VIN = 2.7V
75
L =SUMIDA CMD13D13-33µH
70
10
20
30
40
50
60
IO (mA)
FIGURE 10B. EFFICIENCY vs IO
VIN
L
BAT54HT1
15µH
4.7µF
1µF
3 LEGS OF 2 LEDs IN A SERIES
95
8 VIN
LX 4
VCTRL
0.1µF
VOUT 3
CS 7
2 CNTL PGND 5
1 COMP SGND 6
5Ω
5Ω
5Ω
FIGURE 11A. 3 LEGS OF 2 LEDs IN A SERIES
FIGURE 11.
90
VIN = 4.2V
85
VIN = 2.7V
80
75
L = SUMIDA CMD13D13-15µH
70
15
35
55
75
95
IO (mA)
FIGURE 11B. EFFICIENCY vs IO
VIN
L
BAT54HT1
15µH
4.7µF
1µF
8 VIN
LX 4
3 LEGS OF 3 LEDs IN A SERIES
95
VIN=4.2V
90
VCTRL
0.1µF
VOUT 3
CS 7
2 CNTL PGND 5
1 COMP SGND 6
5Ω 5Ω 5Ω
FIGURE 12A. 3 LEGS OF 3 LEDs IN A SERIES
FIGURE 12.
85
VIN=2.7V
80
75
L=SUMIDA CMD13D13-15µH
70
15
35
55
75
95
IO (mA)
FIGURE 12B. EFFICIENCY vs IO
7
FN7112.5
December 22, 2008
Share Link: 