The AME5144 is an efficient driver for up to ten white LED applications. They are ideal for large LCD backlight displays in Cell Phone, PDAs, and other handheld devices. The AME5144 is switch-mode boost converter with constant LED current, rather than output voltage. The series connection allows the LED currents to be identical for uniform brightness and minimizes the number of trace to the LEDs. The AME5144 drives series-connected LEDs to controlled-current pin which connected a typically 13W sense resistor, not an expensive fraction-ohm value. Fast 1MHz current-mode PWM operation allows for small input and output capacitors and a small inductor while minimizing ripple on the input supply/battery. Soft-start eliminates inrush current during startup. To control LED brightness, the LED current can be pulsed by applying a single analog/PWM signal with a frequency range from 200Hz to 30KHz for the control pin CTRL. The AME5144 is available in space saving, 8 pin, 3mm x 3mm x 0.75mm DFN package.