SC4539 High Efficiency Boost Converter for up to 6 LEDS POWER MANAGEMENT Features Input voltage range — 2.
8V to 5.
5V Current-mode PWM control — 800kHz „ Programmable LED current up to 30mA „ Soft-start to reduce in-rush current „ PWM dimming — 100Hz to 50kHz „ PWM dimming at ISET — Analog and filtered „ Over-voltage protection — 25V (max.
) www.
DataSheet4U.
com „ Under-voltage lockout (UVLO) „ Thermal shutdown „ Shutdown current — 1μA „ Ultra-thin package — 2mm x 2mm x 0.
6mm „ Lead-free package, WEEE and RoHS compliant „ „ Description The SC4539 is designed to regulate current for a series chain of white LEDs in LCD backlighting applications where small size and high efficiency are prioritie...

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