Programmable LED-Driver For Automotive Functions

Analog Gadgets has launched LT8376 60V, 3A step down LED-driver which makes use of a set frequency and gives PWM dimming for a string of LEDs.

The LT8376 LED driver makes use of a present monitor enabling fixed gadget commentary. Due to this fact enhancing the product life cycle. It additionally comes with an correct EN/UVLO pin threshold and an open-drain fault reporting for open-circuit and short-circuit load circumstances, and thermal shutdown. These options make the gadget good for varied automation functions.

LT8376 LED Driver circuit.| Credit score : Analog Gadgets

The gadget affords unfold spectrum modulation. This improves the operative distance and reduces the multipath path fading. The gadget is a monolithic, synchronous, step-down DC/DC converter that makes use of fixed-frequency, peak present management and gives PWM dimming for a string of LEDs. The LED present is programmed by an analog voltage or the responsibility cycle of pulses on the CTRL pin. An output voltage restrict may be set with a resistor divider to the FB pin.

The switching frequency is programmable from 200kHz to 2MHz by an exterior resistor on the RT pin or by an exterior clock on the SYNC/SPRD pin. With the non-compulsory unfold spectrum frequency modulation enabled, the frequency varies from 100% to 125% to scale back EMI. The LT8376 additionally features a driver for an exterior, excessive facet PMOS for PWM dimming and an inside PWM sign generator for analog management of PWM dimming when an exterior sign shouldn’t be obtainable.

  • ±1.5% LED Present Regulation
  • ±2% Output Voltage Regulation
  • 5000:1 PWM Dimming at 100Hz
  • 128:1 Inner PWM Dimming
  • Unfold-Spectrum Frequency Modulation
  • Silent Switcher® Structure for Low EMI
  • 3.6V to 60V Enter Voltage Vary
  • 0V to 60V LED String Voltage
  • 3A, 60V Inner Switches
  • 200kHz to 2MHz with SYNC Perform
  • 99.9% Most Obligation Cycle
  • 20:1 Analog or Obligation Cycle LED Present Management
  • Open/Brief LED Safety and Fault Indication
  • Correct LED Present Sense with Monitor Output
  • Programmable UVLO
  • Thermally Enhanced 28-Lead (4mm × 5mm) LQFN

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