描述 Description

The TLD5190QU 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.

特性 Features

?MOSFET H-Bridge with Single Inductor DC/DC Controller for high power BUCK-BOOST LED control?Constant Current and Constant Voltage Regulation?Wide VIN Range (Device 4.5V to 40V, Power Stage 4.5V to 55V)?Wide LED forward voltage Range (2V up to 55V)?LED current accuracy+/-3% at Tj=25° 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%)?Flexible current sense (Highside or Lowside)?EMC optimized device: Features an auto Spread Spectrum concept to ensure best in class EMC performance?Open Load, Overvoltages, Shorted LED fault and Overtemperature Diagnostic Outputs?LED and Input current sense with dedicated monitor Outputs?Smart power protection features for device and load (open load, short of Load, Overtemperature)?Capability to supply Gate Drivers via external Voltage Regulator?Adjustable Soft Start?Enhanced Dimming features to adjust average LED current and PWM dimming?Available in a small thermally enhanced PG-TQFP-48-9 package?Automotive AEC Qualified

優(yōu)勢:

應(yīng)用 Application

?Especially designed for driving high power LEDs in automotive applications?Ideal for driving (LED) loads on supply/battery voltage level?Automotive Exterior Lighting, where high efficiency is required or where board space is limited, like high current Low Beam, High Beam or combined Low- and Highbeams?Non LED applications like USB, mobile wireless charger and multipurpose pre-regulation like for infotainment

簡介

TLD5190QU屬于集成電路（IC）的LED驅(qū)動器。由制造生產(chǎn)的TLD5190QULED 驅(qū)動器器件屬于 LED 驅(qū)動器電源管理集成電路 (PMIC) 系列，可通過標稱固定電壓的電源為負載（通常為發(fā)光二極管）提供電流，并且電流可控。它與用于電壓調(diào)節(jié)的類似產(chǎn)品的主要區(qū)別在于，這類器件提供較低的反饋電壓（以提高系統(tǒng)能效），而且通常可對器件工作點進行外部控制，可在照明應(yīng)用中用于實現(xiàn)調(diào)光功能。