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MAX8647 - (MAX8647 / MAX8648) Ultra-Efficient Charge Pumps

MAX8647 Description

19-0790; Rev 0; 4/07 Ultra-Efficient Charge Pumps for Six White/RGB LEDs in 3mm x 3mm Thin QFN General .
The MAX8647/MAX8648 drive up to six white LEDs or two sets of RGB LEDs with regulated constant current for display backlight and fun light application.

MAX8647 Features

* an I 2C serial port, while the MAX8648 features a three-wire serial-pulse logic interface. Both devices support independent on/off and dimming for main and subbacklights. The dimming ranges are pseudo-logarithmic from 24mA to 0.1mA and off in 32 steps. Both devices include a temperature derating fun

MAX8647 Applications

* By utilizing an inverting charge pump and extremely lowdropout adaptive current regulators, these ICs achieve very high efficiency over the full 1-cell Li+ battery voltage range and even with large LED forward voltage mismatch. The 1MHz fixed-frequency switching allows for tiny external components.

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MAX8647 MAX8648 Ultra-Efficient Charge Pumps Maxim Integrated Products
Maxim Integrated Products MAX8647-like datasheet