BL8545 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.
* Compact Back Light Module
* Power Source for LED
* Constant Current Source
BL8545 is available in SOT23-6.
The BL8545 PFM 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 identical for unif.
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