Features: •Up to 6 LEDs in series
•27V maximum output
•2.7V to 5.5V input
•Up to 86% efficient
•1.35MHz constant frequency
•Enable/PWM dimming control
•Pb-Free plus anneal available (RoHS compliant)Application•LED backlighting
•Cell phones
•PDAs
•Handheld devicesPinout
SpecificationsAbsolute Maximum Ratings (TA = 25°C)
Input Voltage (VIN). . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.3V to +6V
LX Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.3V to +27V
FB Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.3V to +6V
ENAB Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.3V to +6V
PGND to GND (SC-70 package). . . . . . . . . . . . . . . . -0.3V to +0.3V
Operating Temperature . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . .+125°C
Storage Temperature. . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Lead Temperature (soldering, 10s) . . . . . . . . . . . . . . . . . . . .+300°C
Description The EL7630 represents a high efficiency, constant frequency PWM regulator for use in white LED driving applications.
With efficiencies up to 86%, the EL7630 operates at 1.35MHz switching frequency while operating from an input voltage of between 2.7V and 5.5V. The maximum output voltage of 27V enables the EL7630 to drive up to 6 LEDs in series. It is also possible to use the EL7630 to drive LEDs in series/parallel combination for applications requiring up to 15 LEDs.
Available in the 6-pin SC-70 and the 5-pin TSOT packages, the EL7630 features the same pinout as competitive products but offers higher efficiency, constant frequency operation. It is specified for operation over the -40°C to +85°C ambient temperature range.
EL7630ICZ Data Sheet
