TLD5190QV

LED照明驱动器 LITIX

Description:

The is a synchronous MOSFET H-Bridge DC/DC controller with built in protection features. This concept of a synchronous and seamless buck-boost regulation provides a very efficient solution for circuits where the output load voltage is on the same level as the input voltage, e.g. in short chains with 2 to 3 high power LEDs or laser diodes connected to a 12 V electrical system.

Thanks to the flexibility to be used in current and in voltage mode it is also a perfect device for powering non LED applications like USB and mobile wireless charger or as multipurpose pre-regulation like for infotainment.

As it comes without SPI it is also ideal for all application where a basic feature set is sufficient or where a Microcontroller is not used.

Summary of Features:

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MOSFET H-Bridge with Single Inductor DC/DC Controller for high power BUCK-BOOST LED control

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Constant Current and Constant Voltage Regulation

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Wide VIN Range Device 4.5V to 40V, Power Stage 4.5V to 55V

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Wide LED forward voltage Range 2V up to 55V

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LED current accuracy+/-3% at Tj=25° and 4% over the whole automotive temperature range

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Switching Frequency Range from 200 kHz to 700 kHz

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Maximum Efficiency in every condition up to 96%

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Flexible current sense Highside or Lowside

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EMC optimized device: Features an auto Spread Spectrum concept to ensure best in class EMC performance

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Open Load, Overvoltages, Shorted LED fault and Overtemperature Diagnostic Outputs

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LED and Input current sense with dedicated monitor Outputs

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Smart power protection features for device and load open load, short of Load, Overtemperature

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Capability to supply Gate Drivers via external Voltage Regulator

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Adjustable Soft Start

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Enhanced Dimming features to adjust average LED current and PWM dimming

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Available in a small thermally enhanced VQFN-48-31 package

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Automotive AEC Qualified