ACE714 converter equivalent, high efficiency low noise pfm step-up dc/dc converter.
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 LEDs bright.
The ACE714 veriable frequency step-up Converter drives white LEDs with a constant current to provide
backlight in cell phones, PDAs, and other handheld devices. It features allowing series connection of the white LEDs so that the LED currents are ide.
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