R & D logic announced the launch of a new low-cost WLED driver series

Small package, a minimal amount of external components to help mobile phone manufacturers to deal with the new low-end market

For mobile consumer electronic devices to provide power management semiconductor devices developers analogictech Technology Co. Ltd. (AnalogicTech, NASDAQ: AATI), recently announced the launch of 2 channel and 3 channel charge pump based on WLED (white light-emitting diode) driver series first chip in AAT3193. The new series of devices is a new generation of low-cost mobile phones as the goal, can provide excellent performance in a very space efficient 2x2-mm package.

"In India, China, Russia, South America and Africa and other regions there is still a huge, untapped market potential for mobile phone users, mobile phone users need these services, but can only afford the most basic and simple, with a simplified function to set the phone. AnalogicTech product line manager Adolfo Garcia commented: "designers can use AAT3193 chip designed to meet the needs of these new mobile phone, they can be in the minimum space for low cost TFT-LCD (thin film transistor liquid crystal display panel) provides basic lighting function, and requires only 2 external components, namely 1 for charge pump the 1 F capacitor and 1 are used to set the full LED (light emitting diode) individual current resistor. "

Excellent performance

Although AAT3193 does not have flashy outfit or function, but this does not affect its performance. It can drive up to 3 LED, each of the current up to 30 mA, which can achieve low cost, monochromatic and opaque TFT-LCD panel lighting. Another member of the product family is AAT3192, which can drive 2 LED. The current accuracy of the components provided by these two devices is above 10%, and the current matching between channels is above 3%. These new devices based on charge pump can be automatically converted between 1x and 2x mode to achieve maximum efficiency, and the minimum number of external components required.

Through the use of AAT3193, each LED can use the traditional linear PWM (pulse width modulation) technology, can also use AnalogicTech patented single wire S2Cwire interface. The design of the S2Cwire interface can be used to adjust the driving current of each WLED to 16, 8 or 4 steps, up to 30 mA.

AAT3193 also has built-in thermal protection and automatic soft start function.

Price and supply

AAT3193 rated operating temperature range is -40 to +85 DEG C, the use of lead-free, 10 pin, 2x2-mm SC70JW package, is now available, the order of the amount of $1000 per piece for $0.49.

Source: Sohu