MAX8648ETE+

The MAX8648ETE+ is an ultra-efficient charge pump LED driver from Analog Devices / Maxim Integrated, capable of driving up to six white LEDs or two sets of RGB LEDs. It utilizes an inverting charge pump and low-dropout adaptive current regulators to achieve high efficiency across the full 1-cell Li+ battery voltage range. The device features a 1MHz fixed-frequency switching, enabling the use of tiny external components and optimizing regulation for low EMI and input ripple.

Key electrical specifications include a dimming range from 24mA to 0.1mA in 32 steps, ±2% accuracy, and ±0.4% matching. It operates with a low 70µA quiescent current and a 1µA shutdown current. The MAX8648ETE+ includes thermal shutdown, open- and short-circuit protection, and a temperature derating function to protect LEDs at ambient temperatures above +60°C.

This LED driver is housed in a compact 16-pin, 3mm x 3mm thin QFN package with a maximum height of 0.8mm, making it suitable for space-constrained applications. It is designed for white LED backlighting for single or dual displays, wide-gamut RGB LED display backlighting, camera flash or RGB indicators, and is commonly found in cellular phones, smartphones, PDAs, digital cameras, and camcorders.