ILD4035 E6327

INFINEON  ILD4035 E6327  发光二极管驱动器, 1输出, 降压逐步下降, 4.5V-40V输入, 500kHz开关, SC-74-6

The is a hysteretic step down Driver IC for general lighting applications, which is capable to drive high power LEDs with average currents up to 400mA. The IC incorporates a wide input voltage range and an internal power switch. The output current level can be adjusted with an external sense resistor. According to the multifunctional control pin the IC can be switched ON and OFF by an external signal, which is also suitable to regulate brightness of the LEDs by PWM or analogue voltage dimming. Depending on the value of the switching inductor the switching frequency and the voltage ripple can be set. The precise internal band-gap stabilizes the circuit and provides stable current conditions over-temperature range. To ensure a long lifetime of the LED system, the ILD4035 incorporates an over-voltage and an overcurrent protection. In addition, the integrated thermal protection will reduce the output current to protect the LEDs and the IC against thermal stress.

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Internal switch for up to 400mA average LED current

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Up to 95% efficiency

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Temperature protection mechanism

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Inherent open-circuit LED protection

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Soft-start capability

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Low shut down current

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Analogue and PWM dimming possible

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Typical 3% output current accuracy

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Minimum external components required