LM3409MY

TEXAS INSTRUMENTS  LM3409MY  发光二极管驱动器, 1输出, 降压逐步下降, 6V-42V输入, 1A输出, MSOP-10

The is a PFET Buck Controller for high power LED drives. This controller offer wide input voltage range, high-side differential current sense with low adjustable threshold voltage and fast output enable/disable function. The LM3409 controller use Constant Off-Time control to regulate an accurate constant current without the need for external control loop compensation. Analogue 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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Differential, high-side current sense

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Cycle-by-cycle current limit

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No control loop compensation required

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Supports all-ceramic output capacitors and capacitor-less outputs

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Low-power shutdown and thermal shutdown

This device has limited built-in ESD protection, leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.