New 80 V DC-DC Buck LED Driver IC For Excellent Dimming Performance

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Provides a high safety voltage margin for applications operating close to Safe Extra-Low Voltage (SELV) limits

Infineon Technologies introduces the new LED driver IC ILD8150/E, having an innovative hybrid dimming mode technology. The driver IC is ideally suited for general and professional LED lighting applications with high dimming requirements.

Working

The ILD8150/E offers a deep dimming performance without flicker and prevents audible noise. A PWM input signal between 250 Hz and 20 kHz controls the LED current in analog dimming output mode from 100 to 12.5 percent and from 12.5 to 0.5 percent in hybrid dimming mode, with a flicker-free modulation frequency of 3.4 kHz.

DSO-8 ILD8150
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It incorporates a soft-start function to protect the primary stage from abrupt current requests and a shunt resistor for adjustable maximum output current.

The device also has a dim-to-off function and a pull-down transistor to avoid LED glowing in dim-to-off mode.

DSO-8 ILD8150E

Key Features

  • Drives up to 1.5 A
  • Achieves 0.5 percent of the target current.
  • Supply voltage range: 8 V DC to 80 V DC
  • R DS(on) of 290 mΩ
  • Efficiency of more than 95 percent

Under Voltage Lockout (UVLO) for the bootstrap voltage and over temperature protection functions provide an ideal fit for professional LED lighting solutions.

Availability

The LED driver IC is packaged in a DSO-8 housing which enables wave soldering. Higher thermal performance can be achieved with the ILD8150E in a DSO-8 package with an exposed pad.

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