On semiconductor has launched a new single-channel CAT3661 Quad-Mode led driver for ultra low power LED applications, such as portable handheld medical equipment.
On semiconductor LED power supply product Director Anthony Russel said: "for portable electronic device designers, energy efficiency and small size is often the most priority factors.
CAT3661 low power LED drive using patent Quad-Mode technology, fully embodies these requirements, meet customers with small form factors and longer battery life considerations, consistent with the end user needs a new battery-powered product design. ”CAT3661 use patent framework, integrated fault protection and fault diagnosis, to up to 5mA's current driving a single LED backlight.
Soft-start current limiting and short circuit protection to this new device ideally suited for battery-powered devices. Typical applications include low-power LCD screen (LCD) backlight and including medical equipment, wide range of portable handheld device backlight.CAT3661 uses only x 0.8mm 3mm 3mm x (h) of the packaging, in response to TQFN-16 available board space restricted new design engineers provide useful solutions.
The new devices provide low noise input ripple and constant switching frequency, the ability to use small size external ceramic capacitors, thus further save space and system cost. Four die charge pump support 2.0V-5.5V wide range input voltage, the CAT3661 offers up to 92% of peak energy efficiency levels, than the traditional high efficiency charge pump 1.5x tri-mode up to 10% higher. This device is fully loaded with all operating modes of the typical quiescent current of only 150 μ A, with zero current close, for reducing energy consumption, ensure the application of battery life up to the maximum.Packaging and price
CAT3661 adopts lead-free package, each batch TQFN-16 10,000 tablets price $ 0.86.
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