EL7513 Datasheet PDF - Intersil Corporation
| Part Number | EL7513 | |
| Description | White LED Step-Up Regulator | |
| Manufacturers | Intersil Corporation | |
| Logo |  |
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®
Data Sheet
July 2003
EL7513
FN7112.2
White LED Step-Up Regulator
The EL7513 is a constant current
boost regulator specially designed for
driving white LEDs. It can drive 4
LEDs in series or up to 12 LEDs in parallel/series
configuration and achieves efficiency up to 91%.
The brightness of the LEDs is adjusted through a voltage
level on the CNTL pin. When the level falls below 0.1V, the
chip goes into shut-down mode and consumes less than
1µA of supply current for VIN less than 5.5V.
The EL7513 is available in the 8-pin TSOT and 8-pin MSOP
packages. The TSOT package is just 1mm high, compared
to 1.45mm for the standard SOT23 package.
Ordering Information
PART
NUMBER
EL7513IWT
EL7513IWT-T7
EL7513IWT-T13
EL7513IY
EL7513IY-T7
EL7513IY-T13
PACKAGE
8-Pin TSOT
8-Pin TSOT
8-Pin TSOT
8-Pin MSOP
8-Pin MSOP
8-Pin MSOP
TAPE &
REEL
-
7”
13”
-
7”
13”
PKG. DWG. #
MDP0049
MDP0049
MDP0049
MDP0043
MDP0043
MDP0043
Pinouts
EL7513
(8-PIN TSOT)
TOP VIEW
COMP 1
CNTL 2
VOUT 3
LX 4
8 VIN
7 CS
6 SGND
5 PGND
EL7513
(8-PIN MSOP)
TOP VIEW
CS 1
VIN 2
PGND 3
SGND 4
8 CNTL
7 COMP
6 LX
5 VOUT
Features
• 2.6V to 13.2V input voltage
• 18V maximum output voltage
• Drives up to 12 LEDs
• 1MHz switching frequency
• Up to 91% efficiency
• 1µA maximum shut-down current
• Dimming control
• 8-pin TSOT and 8-pin MSOP packages
Applications
• PDAs
• Cellular phones
• Digital cameras
• White LED backlighting
Typical Connection
2.6V TO
5.5V C1
4.7µF
L
33µH
VCTRL
C3
0.1µF
VIN LX
VOUT
CS
CNTL PGND
COMP SGND
D
C2
1µF
R1
5Ω
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2003. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc.
All other trademarks mentioned are the property of their respective owners.
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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
33µH
BAT54HT1
1µF
4 LEDs IN A SERIES
90
VCTRL
0.1µF
8 VIN
LX 4
VOUT 3
CS 7
2 CNTL PGND 5
1 COMP SGND 6
5Ω
VIN=4.2V
85
VIN=3.3V
VIN=2.7V
80
75
L=COILCRAFT LPO1704-333CM
70
5 10 15 20
LED CURRENT (mA)
25
30
FIGURE 7A. 4 LEDs IN A SERIES
FIGURE 7.
FIGURE 7B. EFFICIENCY vs IO
VIN
4.7µF
L
33µH
BAT54HT1
1µF
8 VIN
LX 4
VCTRL
0.1µF
VOUT 3
CS 7
2 CNTL PGND 5
1 COMP SGND 6
5Ω 5Ω
FIGURE 8A. 2 LEGS OF 2 LEDs IN A SERIES
FIGURE 8.
2 LEGS OF 2 LEDs IN A SERIES
90
VIN=4.2V
85
VIN=2.7V
80
75
L=COILCRAFT LPO1704-333CM
70
10 20 30 40
50
IO (mA)
FIGURE 8B. EFFICIENCY vs IO
60
VIN
4.7µF
L
33µH
BAT54HT1
1µF
8 VIN
LX 4
VCTRL
0.1µF
VOUT 3
CS 7
2 CNTL PGND 5
1 COMP SGND 6
5Ω 5Ω
FIGURE 9A. 2 LEGS OF 3 LEDs IN A SERIES
FIGURE 9.
2 LEGS OF 3 LEDs IN A SERIES
90
VIN=4.2V
85
VIN=2.7V
80
75
L=SUMIDA CMD13D13-33µH
70
10 20 30 40
50
IO (mA)
FIGURE 9B. EFFICIENCY vs IO
60
5
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| Information | Total 11 Pages | |
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| Download | [ EL7513.PDF Datasheet ] | |
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