TLD5501-2QV
Overview
The TLD5501-2QV is a synchronous Dual-Channel Buck DC-DC controller with built in protection features and SPI interface
The synchronous concept is beneficial for driving high power LEDs with maximum system efficiency or to provide a high power constant voltage supply for lighting and non-lighting application. To give maximum flexibility for different applications both DC-DC channels of the TLD5501-2QV can be operated separately or in multiphase.
Summary of Features
- Dual-Channel synchronous Buck DC-DC Controller
- Constant Current and Constant Voltage Regulation
- Individual channel or Multiphase operation
- Wide VIN Range (Device 4.5V to 40V, Power Stage 4.5V to 55V)
- Wide LED forward voltage Range (2V to 50V)
- LED current accuracy+/-3% at Tj=25° and 5% over the whole automotive temperature range
- Switching Frequency Range from 200 kHz to 700 kHz
- 16bit SPI for diagnostics and control, providing daisy chain capability
- Maximum Efficiency in every condition (up to 96%)
- Limp Home Function (Fail Safe Mode)
- Flexible current sense (Highside or Lowside)
- EMC optimized device: Features an auto Spread Spectrum concept to ensure best in class EMC performance
- Provides output current accuracy calibration for improved system accuracy
- LED current sense with dedicated monitor Output
- Adjustable soft start feature to limit the current peak and the voltage overshoot at start-up
- Smart power protection features for device and load (open load, short of Load, Overtemperature)
- Enhanced Dimming features to adjust average LED current and PWM dimming
- Available in a small thermally enhanced PG-VQFN-48-31 package
- Automotive AEC Qualified
Potential Applications
- Especially designed for driving high power LEDs and Laser modules in automotive applications with very high efficiency
- Power supply for high power Matrix and Pixel light sources e.g. LED or Laser modules for DMD or parallel LED Matrix arrays
- Non LED applications even with currents of >10A like USB, mobile wireless charger and multipurpose pre-regulation like for camera modules
- General purpose current/voltage controlled DC-DC LED driver
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