A Morimi semiconductor introduces power saving CABC mode high efficiency charge pump LED driver for smart phone LED backlight

CAT3649 with a content adaptive brightness control (CABC), energy saving display backlight

The primary scheme of high performance silicon semiconductor supplier A Morimi used in high energy electronic products (ON Semiconductor, NASDAQ: ONNN) launched 6 channel energy efficient Quad-Mode LED driver CAT3649, the latest intelligence mobile phone and other consumer handheld applications, such as digital cameras and portable media player (PMP). This Quad-Mode - based architecture with content - adaptive brightness control (CABC) ensures that the LED backlight applications offer the market leading energy efficiency for use only with external capacitors.

A Morimi LED power semiconductor product director Anthony RussELl said: "such as mobile phone with feature rich wisdom of consumer products have a larger screen, so the battery is more demanding, requiring each time after charging the battery can be used for a long time only need to recharge. CAT3649 is a powerful combination of high efficiency, pulse width modulation (PWM) dimming, CABC and filtering functions in the industry truly unique. "The high efficiency LED drive CAT3649 to provide a total of 4 kinds of charge pump mode (1 times, 1.33 times, 1.5 times and 2 times), and 3 non conventional mode; make it talent shows itself in the market. Compared with the traditional 1.5 - time charge pump LED driver, the increases the energy efficiency by up to a factor of up to 1.33 by the way of the CAT3649, so that the handheld products using this component can greatly extend the battery life.

This Quad-Mode fractional charge pump support from 2.4 V to 5.5 V wide input voltage range. LED current can be adjusted by a single line (1-wire) interface with 32 linear increments of analog dimming, or by PWM for further regulation. Under the condition of 100 Hz to kHz signal frequency of 200 PWM, the PWM dimming control is compatible with the CABC function.

Package and price CAT3649 uses a compact 3 mm x mm 3 TQFN package, each of the 100 thousand bulk units priced at $0.49.

For more information, please visit www.onsemi.com.

About A Morimi A Morimi semiconductor semiconductor (ON Semiconductor, NASDAQ: ONNN) is the first high performance silicon solution used in high efficiency electronic products suppliers. The company's products include power and signal management, logic, discrete and custom components, to help customers solve them in the automotive, communications, computer, consumer electronics, industrial, LED lighting, medical, military / aerospace and power applications unique design challenges, both fast and with high cost. The world's leading, value-added supply chain and network in manufacturing, sales offices and design centers in key markets in North America, Europe and Asia pacific. For more information, please visit http://www.onsemi.com.