Document
EL7513
White LED Step-Up Regulator
NORTECROEMCOMMENMDEENDIDSERLD9E7PF6LO3A4RCNEEMWENDTEPSAIGRNTS
DATASHEET
FN7112 Rev 5.00 December 22, 2008
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 Ld TSOT and 8 Ld MSOP packages. The TSOT package is just 1mm high, compared to 1.45mm for the standard SOT23 package.
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 Ld TSOT and 8 Ld MSOP packages • Pb-free available (RoHS compliant)
Applications
• PDAs • Cellular phones • Digital cameras • White LED backlighting
Ordering Information
PART NUMBER
PART MARKING
TEMP. RANGE (°C)
PACKAGE
PKG. DWG. #
EL7513IWT-T7*
9
-40 to +85
8 Ld TSOT Tape and Reel
MDP0049
EL7513IWT-T7A*
9
-40 to +85
8 Ld TSOT Tape and Reel
MDP0049
EL7513IWTZ-T7* (See Note)
BAAA
-40 to +85
8 Ld TSOT Tape and Reel (Pb-Free)
MDP0049
EL7513IWTZ-T7A* (See Note)
BAAA
-40 to +85
8 Ld TSOT Tape and Reel (Pb-Free)
MDP0049
EL7513IY
d
-40 to +85
8 Ld MSOP
MDP0043
EL7513IY-T7*
d
-40 to +85
8 Ld MSOP Tape and Reel
MDP0043
EL7513IY-T13*
d
-40 to +85
8 Ld MSOP Tape and Reel
MDP0043
EL7513IYZ (See Note)
BAABA
-40 to +85
8 Ld MSOP (Pb-Free)
MDP0043
EL7513IYZ-T7* (See Note)
BAABA
-40 to +85
8 Ld MSOP Tape and Reel (Pb-Free)
MDP0043
EL7513IYZ-T13* (See Note)
BAABA
-40 to +85
8 Ld MSOP Tape and Reel (Pb-Free)
MDP0043
*Please refer to TB347 for details on reel specifications.
NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
FN7112 Rev 5.00 December 22, 2008
Page 1 of 12
EL7513
Pinouts
EL7513 (8 LD TSOT) TOP VIEW
COMP 1 CNTL 2 VOUT 3
LX 4
8 VIN 7 CS 6 SGND 5 PGND
EL7513 (8 LD MSOP)
TOP VIEW
CS 1 VIN 2 PGND 3 SGND 4
8 CNTL 7 COMP 6 LX 5 VOUT
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 5
FN7112 Rev 5.00 December 22, 2008
Page 2 of 12
EL7513
Absolute Maximum Ratings (TA = +25°C)
COMP, CNTL, CS to SGND. . . . . . . . . . . . . . . . . . . . . . -0.3V to +6V VIN to SGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+14V VOUT to SGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+19V LX to PGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+20V
SGND to PGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +0.3V Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C Ambient Operating Temperature . . . . . . . . . . . . . . . .-40°C to +85°C Pb-Free Reflow Profile. . . . . . . . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and result in failures not covered by warranty.
IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typ values are for information purposes only. Unless otherwise noted, all tests are at the specified temperature and are pulsed tests, therefore: TJ = TC = TA
Electrical Specifications VIN = 3V, VO = 12V, C1 = 4.7µF, L = 33µH, C2 = 1µF, C3 = 0.1µF, R1 = 5, TA =+ 25°C,
Unless Otherwise Specified.
PARAMETER
DESCRIPTION
CONDITIONS
MIN TYP MAX UNIT
VIN Input Voltage
IQ1 Total Input Current at Shut-down
IQ1 Quiescent Supply Current at VO Pin
ICOMP
COMP Pin Pull-up Current
VCOMP
COMP Voltage Swing
ICNTL
CNTL Shut-down Current
VCNTL1
Chip Enable Voltage
VCNTL2
Chip Disable Voltage
IOUT_ACCURACY VCNTL = 1V
VOUT1
Over-voltage Threshold
VOUT2
Over-voltage Threshold
ILX MOSFET Current Limit
VCNTL = 0V VCNTL = 1V, load disconnected COMP connected to SGND
CNTL = 0V
VCNTL = 1V VOUT rising VOUT falling, with resistive load
2.6 13.2 V
1 µA
1 1.5 mA
11 20 µA
0.5 1.5 2.5
V
1 µA
240 mV
100 mV
14 15 16 mA
17 18 19
V
15 16 17.5 V
500 mA
RDS_ON ILEAK FS DMAX ICS IO/VIN
MOSFET On-resistance MOSFET Leakage Current Switching Frequency Maximum Duty Ratio CS Input .