A Morimi push energy saving high efficiency charge pump LED driver

Used in high energy electronic products first high performance silicon solutions provider A Morimi semiconductor company launched the 6 channel energy efficient Quad-Mode LED driver CAT3649, for the new intelligent mobile phone and other consumer handheld applications, such as digital cameras and portable media player (PMP). This Quad-Mode - based architecture with a content - based adaptive brightness control (CABC) feature ensures the market leading energy efficiency for LED backlighting applications that use only external capacitors.

A Morimi LED power semiconductor product director AnthonyRussELl said: "such as intelligent mobile phone with feature rich consumer products have adopted a bigger 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 driver 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 driver increases the energy efficiency by up to a factor of up to 1.33 by the way of the CAT3649 drive, so that the handheld products using this device can greatly extend the battery life.

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