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element14 has a new batch of 10 National Semiconductor LM3409HVEVAL-LED Driver Eval Kits. The LM3409/09HV is a showcase for National’s P-channel MosFET (PFET) controllers for step-down (buck) current regulators. They offer wide input voltage range, high-side differential current sense with low adjustable threshold voltage, fast output enable/disable function and a thermally enhanced eMSOP-10 package. These features combine to make the LM3409/09HV ideal for use as constant current sources for driving LEDs where forward currents up to 5A are easily achievable. Analog and PWM dimming are easy to implement and result in a highly linear dimming range with excellent achievable contrast ratios. Programmable UVLO, low-power shutdown, and thermal shutdown complete the feature set.
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looking quite good....just want to test it ........
i am already working with the Scrolling Message Display....
i also wants to work on led matrix with this board...
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