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Kingbor Technology Co.,Ltd
TEL:(86)0755-26508846 FAX:(86)0755-26509052
KB4317
High Efficiency, Constant Current 2 Watt Boost White-LED Driver
FEATURES
•Operating Voltage:2.3V~6.5V •High Operating Frequency: 1.2MHz •High Efficiency: Up to 90% •High Output Voltage: Up to 32V •High Output Power: 2W •Shutdown Current <1PA •30V Output Over-voltage protection (min) •Digital Dimming Control. •Built-in Cycle-by Cycle Current-limiting. •Built-in Soft-Start Function. •0.25V Low Reference Voltage(+/-5%) •Tiny SOT23-6 Package
DESCRIPTION
The KB4317 step-up converter drives white LEDs with a constant current to provide backlight in cell phones, PDAs, and other hand-held devices. It features allowing series connection of the white LEDs so that the LED currents are identical for uniform brightness.
KB4317 Datasheet
