LM3404MA

TEXAS INSTRUMENTS  LM3404MA  发光二极管驱动器, 1输出, 降压逐步下降, 6V-42V输入, 1MHz开关, 40V/1.2A输出, SOIC-8

The is a constant current Buck Regulator for high power LED driver, designed to deliver constant currents to high power LEDs. This regulator contains a high-side N-channel MOSFET switch with a current limit of 1.5A typical for step-down buck regulators. Hysteretic controlled on-time and an external resistor allow the converter output voltage to adjust as needed to deliver a constant current to series and series-parallel connected LED arrays of varying number and type. Some features of this product includes LED dimming using pulse width modulation PWM, broken or open LED protection, low-power shutdown and thermal shutdown.

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Cycle-by-cycle current limit

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No control loop compensation required

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Separate PWM dimming and low power shutdown

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Supports all-ceramic output capacitors and capacitor-less outputs

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Thermal shutdown protection

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.