AT1316A

Global Mixed-mode Technology High Efficiency, Constant LEDs Driver Current AT1316A 20V White- Feature „ Operating Voltage: 2.5V to 5.5V. „ High Operating Frequency: 1MHz „ High Output Voltage: Up to 20V(Typ.) „ Digital Dimming Control. „ Built-in Cycle-by Cycle Current-Limiting. „ Built-in Soft-Start Function. „ 0.1V/0.2V/0.3V Low Reference Voltage „ Thermal Overload Protection „ TSOT-23-6 Package Application GPS Navigation System Compact Back Light Module Constant Current Source LED Module Description The AT1316A 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. An enable input can be pulsed repeatedly to adjust LED’s brightness. The fast 1.0 MHz current-mode PWM control allows for smaller capacitor and inductor. Fault condition protection uses cycle-by-cycle current limi...