el1848 Intersil Corporation, el1848 Datasheet - Page 7

• Manufacturer Part Number: el1848
• 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.
4.7µF
0.1µF
V
FIGURE 11. PACKAGE POWER DISSIPATION vs AMBIENT
CTRL
V
IN
FIGURE 10A. 3 LEGS OF 3 LEDs IN A SERIES
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
1
0
0
JEDEC JESD51-7 HIGH EFFECTIVE
THERMAL CONDUCTIVITY TEST BOARD
8
2
1
TEMPERATURE
870mW
VIN
CNTL
COMP
15µH
AMBIENT TEMPERATURE (°C)
25
L
PGND
VOUT
SGND
CS
LX
50
4
3
7
5
6
7
BAT54HT1
T
JA
MSOP8/10
75
=115°C/W
85
5:
100
(Continued)
5:
125
1
= 4.7µF, C
5:
1µF
FIGURE 10.
EL1848
2
= 1µF, C
3
FIGURE 12. PACKAGE POWER DISSIPATION vs AMBIENT
= 0.1µF, L = 33µF, V
95
90
85
80
75
70
0.6
0.5
0.4
0.3
0.2
0.1
15
3 LEGS OF 3 LEDs IN A SERIES
0
TEMPERATURE
L=SUMIDA CMD13D13-15µH
0
JEDEC JESD51-3 LOW EFFECTIVE
THERMAL CONDUCTIVITY TEST BOARD
FIGURE 10B. EFFICIENCY vs I
486mW
AMBIENT TEMPERATURE (°C)
IN
25
35
= 3.3V, V
50
I
O
CNTL
T
JA
55
MSOP8/10
(mA)
V
V
=206°C/W
IN
IN
75
=2.7V
= 1V, R
=4.2V
85
75
100
1
= 5:, 3 LEDs in a
O
125
95