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ILD4035 LED Driver

Infineon's ILD4035 hysteric buck LED controller IC can drive high current, high brightness LEDs up to 350mA

Designed for industrial applications, Infineon's ILD4035 is a hysteretic buck LED controller IC that can drive high current, high brightness LEDs up to 350mA. This IC incorporates a wide input voltage range and internal power switch. Its output current level can be adjusted with an external sense resistor. With a multifunctional control pin, the IC can be switched on and off by an external signal that regulates the brightness of the LEDs by PWM or DC dimming as well. The voltage ripple can be set depending on the value of the switching inductor. The precise internal band gap stabilizes the circuit and provides stable current conditions over temperature range. Furthermore, overvoltage protection and a reversible temperature shutdown mechanism (no hardware or software reset necessary) reinforce the IC to protect attached LEDs. Additional features are included to protect the LEDs from overload as well as short circuit events. ILD4035 LED Driver

  • Wide 4.5 to 42 volt input voltage range
  • Internal power switch
  • Overcurrent protection
  • Overvoltage protection
  • Reversible temperature shutdown mechanism
  • Inherent open circuit LED protection
  • Soft-start capability
  • Low shut down current
  • 350mA LED output current
  • Multifunctional enable pin
  • Possible DC dimming
  • Possible PWM control for LED brightness
  • Typical 3% output current accuracy
  • Extreme low LED current drift overtemperature
  • Minimum external components required
  • Small SC74 package

  • Industrial
  • Universal constant current sources
  • Residential architectural
  • Indoor and outdoor commercial lighting
  • General illumination
  • Halogen replacement
  • Signal and marker lights for orientation or navigation (stairways, exits, etc.)

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Digi-Key P/N Topology Frequency Current
ILD 4035 E6327TR-ND Step-Down (Buck) 200kHz 350mA 45V IC LED DRIVER SC-74 Datasheet
ILD 4035 E6327CT-ND
ILD 4035 E6327DKR-ND