Freescale Carle with new power management integrated circuit to illuminate the LED growth market

In September 8, 2008, the United States of Dezhou Austen and Tokyo of Japan, in order to meet the market for energy-saving and environmental friendly light emitting diode (LED) technology, Freescale Carle semiconductor launched its current power management IC products of the first LED backlight products. The new 10 channel MC34844 white LED driver IC is designed for notebook computers, LED backlit screen in flat panel monitors between 10~27 inches.

According to IMSResearch statistics, backlight applications (including LED drive IC) semiconductor market is expected to grow from $1 billion 100 million in 2008 to $2 billion in 2012. At present, LED backlight in mobile phones, GPS devices and PDA's small liquid crystal display (LCD) is very popular. However, LED is now beginning to be implemented in large LCD modules used in laptops, monitors, and large screen tvs.

"We expect the LED Backlight Market of notebook computer, monitors and TV will be strong growth," IMSResearch Market Research Analyst JamieFox said, "especially in the notebook computer, the market forecast from 2008 to 2010 there will be rapid growth. "

LED backlight is a breakthrough technology, the LCD market will stimulate innovation and growth, environmental friendly LCD display high efficiency for the market, "fly think of Carle vice president and general manager of analog, mixed signal and power division, ArmanNaghavi said," as a leading analog product supplier, fly think of Carle can drive IC advanced LED backlight applications. With the extension of growth opportunities from the notebook computer and the monitor to LCD TV and automotive, consumer and industrial lighting applications, LED backlight market future is limitless. "

Energy saving, mercury free

Compared with the traditional cold cathode fluorescent lamp (CCFL) lighting system, which is widely used in traditional LCD display, LED technology has many advantages. LED backlight can enhance the user viewing experience, with a more flexible backlight architecture, so that the display design is thinner. Not only that, compared with the traditional CCFL, the advantages of the LED backlight also includes more efficient (given power lighter), lower power consumption, five times the service life, improve the durability, 100 times higher than the contrast, the resolution screen more clearly.

The main advantage of LED technology is that it does not contain mercury, a substance harmful to humans. Mercury is a key material in the CCFL lighting system, which is used in 99% of the LED TV monitors. In Europe, restrictions on the use of certain hazardous substances in Electronic Equipment Directive (RoHS) have been specified, manufacturers must be transferred to mercury free LED.

Growth markets: TV and lighting

Freescale Carle analog and power management solutions are the core of numerous energy saving technologies used in consumer electronics, home appliances, automotive systems and engine control. With the launch of the LED backlight drive IC series, Freescale Carle plans to enter the growing backlight market, such as large screen digital TV and commercial lighting. The traditional LCD TV, which is not using the LED backlight technology, is the main energy consumption in the home. Since manufacturers are allowed to use thinner, lighter shapes, the LED backlight with local dimming function can reduce power consumption by up to 30%.

Freescale Carle plans in the first quarter of 2009 to launch a LED backlight solution for LCD tv. The company also plans to enter the automotive, commercial and residential applications in the LED lighting market in the same year, which is expected to eventually declare the end of the LCD TV market.

About MC34844LED drive IC

Freescale Carle's MC34844IC is the industry's most compact large notebook and monitor applications LED backlight driver IC solution. This device is highly integrated in 10 parallELstrings (the word not sure, please give up) drive 160 LED, LED has the ability to control current than any other single chip solutions are more powerful. MC34844 provides excellent intelligence for LED backlight. Pulse width modulation (PWM) generator supports LED dimming, which is a way to help improve the quality of the screen, so that the screen longer life. Through light and temperature compensation, the device also provides consistent performance throughout the life cycle of the LED.

Using the I2C/SMBus interface of the device, the developer is able to design the LED current, PWM frequency and PWM duty cycle of the LED. In order to drive more LED, multiple devices can be synchronized. MC34844 can reduce the burden of PWM generated controller, PWM signal does not need to go through the printed circuit board, because it will cause noise and electromagnetic compatibility problems.

Source: vertical banner automotive electronic network