Synchronous MOSFET H-Bridge DC-DC controller with built-in protection features

Synchronous MOSFET H-Bridge DC-DC controller with built-in protection features


LITIX™ Power TLD5191ES is a synchronous 4 – switch buck-boost DC/DC controller with built-in protection features.

This concept is beneficial for driving high-power LEDs with maximum system efficiency and a minimum number of external components for automotive exterior lighting.

Key features

  • MOSFET 4 – switch buck-boost DC/DC controller for high power buck-boost LED control
  • Constant current and constant voltage regulation
  • Wide VIN range (4.5 V to 40 V)
  • Wide LED forward voltage range (Vout range from 2 V to 55 V)

Additional features

  • LED current accuracy +/-3% at Tj=25° C and 4% over the whole automotive temperature range
  • Switching frequency range from 200 kHz to 700 kHz
  • Maximum efficiency in every condition (up to 96%)
  • EMC optimized device: spread spectrum always active
  • Overvoltage, shorted LED fault, and over-temperature diagnostic outputs
  • Adjustable soft start
  • Enhanced dimming features: analog and PWM dimming (from digital input or sourced by embedded PWM engine)
  • Available in a small thermally enhanced TSDSO-24 package
  • Automotive AEC Qualified

more information:

About mixos

Mike is the founder and editor of, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)

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