Infineon ILD1150

The ILD1150 is a Multitopology High Power DC/DC Controller IC with built in protection features. The main function of this device is to regulate a constant LED current. The constant current regulation is especially beneficial for LED color accuracy and longer lifetime. The controller concept of the ILD1150 allows a multi - purpose usage such as Boost, Buck, Buck - Boost, SEPIC and Flyback configuration with various load current levels by simply adjusting the external components. The ILD1150 has a PWM output for dimming a LED load. The diagnostics are communicated on a status output (pin ST) to indicate a fault condition such as an LED open circuit. The switching frequency is adjustable in the range of 100 kHz to 500 kHz and can be synchronized to an external clock source. The ILD1150 features an enable function reducing the shut - down current consumption to <10 μA. The current mode regulation scheme of this device provides a stable regulation loop maintained by small external compensation components. The integrated soft - start feature limits the current peak as well as voltage overshoot at start - up. This IC provides protection functions such as output overvoltage protection and overtemperature shutdown.

• Wide Input Voltage Range from 4.75 V to 45 V
• Constant Current or Constant Voltage Regulation
• Drives LEDs in Boost, Buck, Buck - Boost, SEPIC and Flyback Topology
• Very Low Shutdown Current: <10 μA
• Flexible Switching Frequency Range, 100 kHz to 500 kHz
• Synchronization with external clock source
• Output Open Circuit Diagnostic Output PG
• PWM Dimming
• Internal Soft Start
• 300mV High Side Current Sense to ensure highest flexibility and LED current accuracy
• Internal 5 V Low Drop Out Voltage Regulator
• Wide LED current range via simple adaptation of external components
• Available in a small thermally enhanced PG - SSOP - 14 package
• Output Overvoltage Protection
• Over Temperature Shutdown
• Green Product (RoHS) Compliant

• LED Controller for Industrial Applications
• Universal Constant Current and Voltage Source
• General Illumination e.g. Halogen Replacement Residential Architectural and Industrial Commercial Lighting for in - and outdoor
• Signal and Marker Lights for Orientation or Navigation (e.g. steps, exit ways, etc.)