EL7513

Features:

• 2.6V to 13.2V input voltage
• 18V maximum output voltage
• Drives up to 12 LEDs
• 1MHz switching frequency
• Up to 91% efficiency
• 1A maximum shut-down current
• Dimming control
• 8-pin TSOT and 8-pin MSOP packages




Application

• PDAs
• Cellular phones
• Digital cameras
• White LED backlighting




Specifications

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

CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. This part is ESD sensitive. Handle with care.




Description

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 1A 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.