EL7513IY Intersil, EL7513IY Datasheet - Page 4

• Manufacturer Part Number: EL7513IY
• Description: IC LED DRIVR WHITE BCKLGT 8-MSOP
• Manufacturer: Intersil
• Type: Backlight, White LEDr

Specifications of EL7513IY

• Constant Current: Yes
• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: White LED
• Frequency: 800kHz ~ 1.2MHz
• Voltage - Supply: 2.6 V ~ 13.2 V
• Voltage - Output: 18V
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 75mA
• Internal Switch(s): Yes
• Efficiency: 91%
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Block Diagram
Typical Performance Curves
All performance curves and waveforms are taken with C
series; unless otherwise specified.
1.05
1.04
1.03
1.02
1.01
1.00
FIGURE 1. SWITCHING FREQUENCY vs V
2.5
3.0
SIGNAL
PWM
2.6V TO
C
V
5.5V
3.5
COMP
4.7µF
0.1µF
CNTL
C
IN
4
V
IN
4.0
COMP
CNTL
(V)
4.5
GENERATOR
REFERENCE
617k
50k
5.0
IN
1
= 4.7µF, C
5.5
OSCILLATOR
ERROR AMP
START-UP
CONTROL
V
I-SENSE
BOOST
1MHz
IN
+
+
+
EL7513
2
+
= 1µF, C
-
OVER-VOLTAGE
PROTECTION
3
SHUTDOWN
= 0.1µF, L = 33µF, V
THERMAL
LOGIC
PWM
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
2.5
FIGURE 2. QUIESCENT CURRENT
V
WHITE LEDs DISCONNECTED
CNTL
V
LX
PGND
C
SGND
4.5
OUT
S
IN
= 0V, 0.1V
I(LED)
= 3.3V, V
L
33µH
6.5
V
CNTL
IN
8.5
5Ω
(V)
= 1V, R
10.5
C
1µF
OUT
1
= 5Ω, 4 LEDs in a
12.5
December 22, 2008
14.5
FN7112.5