MAX8647 (MAX8647 / MAX8648) Ultra-Efficient Charge Pumps

Maxim Integrated Products

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.

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Datasheet Specifications

Part number: MAX8647
Manufacturer: Maxim Integrated ↗ Products
File Size: 307.69 KB
Datasheet: MAX8647_MaximIntegratedProducts.pdf
Description: (MAX8647 / MAX8648) Ultra-Efficient Charge Pumps

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

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 MAX8647 MAX8648 Ultra-Efficient Charge Pumps Maxim Integrated Products

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