TLD5190QV

The TLD5190QV is a synchronous MOSFET H-Bridge DC/DC controller with built in protection features. This concept is beneficial for driving high power LEDs with maximum system efficiency and minimum number of external components. The TLD5190QV offers both analog and digital (PWM) dimming.The switching frequency is adjustable in the range of 200 kHz to 700 kHz. It can be synchronized to an external clock source. A built in Spread Spectrum switching frequency modulation and the forced continuous current regulation mode improve the overall EMC behavior. Furthermore the current mode regulation scheme provides a stable regulation loop maintained by small external compensation components. The adjustable soft start feature limits the current peak as well as voltage overshoot at start-up. The TLD5190QV is suitable for use in the harsh automotive environment.

ParametricTLD5190QV
TopologyDC/DC Synchronous H-Bridge
VS  min  max4.5V  40.0V
fSW  min  max200.0kHz  700.0kHz
Tolerance3%
Short Circuit ProtectionY
InhibitY
PWMY
Open Load DetectionY
Iq1.5µA
Operating Temperature  min  max-40.0°C  150.0°C
Sales Product NameTLD5190QV
OPNTLD5190QVXUMA1
Product Statusactive and preferred
Package NamePG-VQFN-48
Completely lead freeyes
Halogen freeyes
RoHS compliantyes
Packing Size2500
Packing TypeTAPE & REEL
Summary of Features:
  • MOSFET H-Bridge with Single Inductor DC/DC Controller for high power BUCKBOOST 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)
  • Maximum Efficiency in every condition (up to 96%)
  • Flexible current sense (Highside or Lowside)
  • LED current accuracy+/-3% at Tj=25° and 4% over the whole automotive temperature range
  • 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)
  • Switching Frequency Range from 200 kHz to 700 kHz
  • 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 VQFN-48-31 package
  • Automotive AEC Qualified
Target Applications:
  • Especially designed for driving high power LEDs in automotive applications
  • Automotive Exterior Lighting, where high efficiency is required or where board space is limited, like Low Beam, High Beam (combined LB/HB),
  • General purpose current/voltage controlled DC/DC LED driver
Data Sheet
TitleSizeDateVersion
TLD5190QV Data Sheet,EN3 MB03 Jun 201601_00
EN TLD5190QV