A Morimi semiconductor launched three output LED driver

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July 20, 2007 - the world's leading power semiconductor solutions provider A Morimi semiconductor (ON Semiconductor, NASDAQ: ONNN) launched the energy efficiency three output LED driver NCP5623, with I2C interface, and a built-in progressive dimming function. The device is specifically designed to drive the RGB (red, green, blue) LED decorative light and enhanced LCD backlight in portable products such as mobile phones and MP3 players. NCP5623 uses a compact LLGA-12 package, is currently in the market using non convex plastic packaging in the smallest RGB LED charge pump driver.

A Morimi semiconductor digital and consumer products vice president and general manager Manor Narayanan said: "the portable products using LED to generate luminous pattern, can continue to enhance the attractiveness and interesting interactive products. A Morimi semiconductor's high efficiency, ultra small NCP5623 LED driver built in a unique control algorithm, can provide plug and play for portable applications, while supporting a very strong color combination. "

NCP5623 LED processor through its I2C interface driver receives instructions for automatic operation. Its three - way control current output is independent of each control current output has a typical matching tolerance of + / - 0.5% and the current level of the, so that the three color RGB LED can display more than 32000 kinds of colors. The device integrates progressive dimming function, can gradually increase or decrease the output current, to create a theater like fade / fade effect. Due to the integration of the logarithmic current algorithm, the device can ensure that the brightness and color changes in a smooth and gradual way to present.

In order to prolong battery life, to achieve 94% NCP5623 peak efficiency with less than 1 microampere standby current, lithium battery more than the general scope of work. For typical applications, the device in addition to the advantages of a very small IC package, with only 4 passive components can work characteristics. The device also has a short circuit and overvoltage protection function, when the LED failure protection system.

Package and price

NCP5623 with 2 mm * 2 mm * 0.55 mm LLGA-12 lead-free package, each of the 3000 pieces of the mass budget at $0.55.

Source: third media