LM3407MY

TEXAS INSTRUMENTS  LM3407MY  发光二极管驱动器, 1输出, 降压逐步下降, 4.5V-30V输入, 1MHz开关, 350mA输出, MSOP-8

The is a constant current output floating buck Switching Converter designed to provide constant current to high power LEDs. It has an integrated power N-MOSFET that makes the application solution compact and simple to implement. An external 1% thick-film resistor allows the converter output voltage to adjust as needed to deliver constant current within 10% accuracy to a serially connected LED string of varying number and type. Converter switching frequency is adjustable from 300kHz to 1MHz. The LM3407 features a dimming input to enable LED brightness control by pulse width modulation PWM. Additionally, a separate enable pin allows for low power shutdown. Input UVLO and output open-circuit protection ensure a robust LED driver solution.

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Accurate constant-current output

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Independent device enable CMOS compatible and PWM dimming control

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No external control loop compensation required

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Supports ceramic and low ESR output capacitors

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Input under-voltage lock out UVLO

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Thermal shutdown protection

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0.1 to 0.9V Output voltage range

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Green product and no Sb/Br