MAX8648ETE+TG104

The MAX8648ETE+TG104, manufactured by Analog Devices (formerly Maxim Integrated), is an ultra-efficient charge pump LED driver. It is designed to drive up to six white LEDs or two sets of RGB LEDs for display backlight and fun light applications.

This device utilizes an inverting charge pump and low-dropout adaptive current regulators, achieving high efficiency across the 1-cell Li+ battery voltage range. It features a 1MHz fixed-frequency switching for small external components and includes thermal shutdown, open, and short-circuit protection. The MAX8648 features a three-wire serial-pulse logic interface, supporting independent on/off and dimming for main and sub-backlights. The dimming range is pseudo-logarithmic from 24mA to 0.1mA in 32 steps.

Key electrical specifications include ±2% accuracy and ±0.4% matching, with a low 70µA quiescent current and 1µA shutdown current. It also incorporates an inrush current limit and a temperature derating function to protect LEDs at ambient temperatures above +60°C.

The MAX8648ETE+TG104 is supplied in a compact 16-pin, 3mm x 3mm thin QFN package with a maximum height of 0.8mm. It operates within an extended temperature range of -40°C to +85°C. Applications include white LED backlighting for single or dual displays, wide-gamut RGB LED display backlighting, camera flash, RGB indicators, and use in cellular phones, smartphones, PDAs, digital cameras, and camcorders.