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LT3932

Notas de Diseño

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  36V, 2A LED Driver with 5000:1 PWM Dimming Meets CISPR 25 Class 5 EMI Limits with Silent Switcher Architecture &mdash DN570
  PDF, 446 Kb, Archivo publicado: nov 7, 2017
  Extracto del documento

  Design Note
  36V, 2A LED Driver with 5000:1 PWM Dimming Meets CISPRВ 25
  Class 5 EMI Limits with Silent Switcher Architecture
  Kyle Lawrence
  Introduction
  The LED backlights in automotive heads-up displays,
  infotainment systems, and dashboard lighting must be
  bright enough to compete with direct sunlight streaming
  into a car during the day, yet capable of reducing brightness
  by several orders of magnitude to avoid blinding a driver at
  night. Generic LED drivers struggle to achieve such high
  dimming ratios.
  The LT3932 synchronous step-down LED driver with
  integrated 36V, 2A switches features high ratio PWM
  dimming. The LT3932 houses its high efficiency integrated
  power switches inside a small 4mm Г— 5mm QFN package,
  and can be run at up to 2MHz switching frequency for a
  compact, high bandwidth design. When high dimming ratio
  capability is not needed, and simplicity is paramount, its
  internal PWM generator can be used to produce 128:1 PWM 9V TO
  36V High PWM Dimming Ratio
  With the LT3932 operating at a dimming frequency of
  100Hz and a switching frequency of 2MHz, a high current …

Linea modelo

Clasificación del fabricante

• Power Management > LED Driver ICs > Step-Down (Buck) LED Drivers
• Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) LED Drivers

Otros nombres:

LT3932IUFD-1TRPBF, LT3932IUFD-1 TRPBF, LT3932IUFD1#TRPBF, LT3932IUFD 1#TRPBF