Catalyst provides a new and efficient solution for users of the 604 series LED drive

[BP] the Nikkei news agency reported in December 14, 2007, analog, mixed signal and nonvolatile memory supplier of Catalyst semiconductor company (NASDAQ:CATS), released the new Quad-ModeTM patented technology based on fractional charge pump LED driver. CAT3604V is a 4 channel LED driver for the use of 'series LED driver users to increase the Catalyst patented Quad-Mode architecture to further enhance efficiency.

Quad-Mode technology is not only able to provide high efficiency similar to that of inductive LED driver, but also avoid the problem of high thickness and EMI interference caused by the use of inductors. At present, most of the charge pump LED drives provide 3 operating modes according to the output voltage and input voltage ratio: 1X, 1.5x and 2x. The Quad-Mode architecture uses the CAT3604V to add fourth modes of operation - 1.33x, 1.33X provides a higher efficiency, in particular, the four mode (four-mode) charge pump still requires only two external capacitors. 1.33x mode can effectively reduce the input current of the battery terminal, so that the power supply side of the system to achieve the minimum noise, which is a key parameter in mobile phones and other portable devices.

The new CAT3604V is a PWM dimming interface and channel detection of the charge pump type LED driver, it can automatically detect the LED channel open or short circuit state to ensure that the chip can still maintain the highest efficiency under various conditions.

CAT3604V is the newest member of the Catalyst LED drive product line, which also includes a 6 channel CAT3636, a Quad-Mode, a 4 channel CAT3644 and a 3 channel CAT3643 with a single line EZDim dimming.

Product characteristics

Patented Quad-ModeTM architecture of the charging pump

Compatible "604 series, with more efficient, including 4 kinds of charge pump mode, especially the 1.33 times still boost mode only two flying capacitance and power efficiency as high as 92% and drive 4 LED each LED current 25mA devices with protection function PWM dimming interface and built-in complete by 16 welding TQFN package, the size of 4mm * 4mm

Price and supply

CAT3604V in the order of 10000 pieces, each price of $0.48. Samples and evaluation boards are now available. 6 to 8 weeks after receipt of orders.

About Quad-ModeTM

Catalyst Quad-Mode adaptive fractional charge pump technology patent to enhance the performance of LED drive to a new level, to enhance the efficiency of the device size is only 10%, the existing three mode charge pump assembly 65%, without additional capacitance and cost. The efficiency of the device with Quad-Mode architecture is as high as 92%, and the average efficiency of the device is about 84%, which can save the space of the circuit board more effectively and reduce the cost.

About Catalyst semiconductor

Catalyst semiconductor headquartered in California's Santa Clara, design and marketing of analog and mixed signal products and non-volatile memory, product line includes Digital Programmable Potentiometer [DPP], white light and color LED driver, DC/DC converter, LDO regulator, power monitor, bus extender, serial and parallel interface of EEPROM, Flash and NVRAM. Most of Catalyst products have been integrated, programmable quantum charge configuration (Quantum Charge Programmable) technology, simulation for the production of adaptive (Adaptive Analog) products provide a flexible design, low power consumption and small size of the new class. Catalyst devices are often used in telecommunications, computer, automotive, industrial control and consumer electronics markets. Typical applications include LCD displays, automotive lighting, optical networks, printers, modems, wireless networks, network cards, DIMM modules, mobile phones, navigation systems, set-top boxes and network routers, etc.. Catalyst semiconductors: www.catsemi.com.

Forward looking statements

The forward-looking statements contained herein are subject to uncertainties and risk factors, including, but not limited to, the delivery time and delivery schedule of LED drives involving Catalyst. These statements are based on the current information and market conditions, the same and easy to cause uncertainty and risk due to actual results in the forward-looking statements described in the contents of the discrepancy. There are many factors that may affect these risks and uncertainties, including the disruption of our manufacturing processes, the customer's needs, and the volatility of the market. Further information on the factors that could cause the forward-looking statements to be reported in connection with the above Catalyst semiconductor are described in the Catalyst's SEC report. These factors include, but are not limited to, the annual report of the Form 10-K Catalyst as well as the quarterly reports referred to in the Form 10-Q report. These factors are covered in the chapter entitled "risk factors". Catalyst is not necessary to update any forward-looking statements.

Source: Technology Online