Datasheet Linear Technology LT3466EFE#PBF — Даташит

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Корпус / Упаковка / Маркировка

Параметры

Экологический статус

Design Notes

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  Dual White LED Driver Features Integrated Switches and Schottky Diodes in 3mm Г— 3mm DFN Package &mdash DN1010
  PDF, 67 Кб, Файл опубликован: 25 мар 2005
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  advertisement Dual White LED Driver Features Integrated Switches and Schottky
  Diodes in 3mm × 3mm DFN Package – Design Note 1010
  David Kim The LT3466 uses a constant-current, step-up architecture
  to directly regulate LED current, providing consistent light
  intensity and color across all LEDs regardless of variations in their forward voltage drop. Important features
  including soft-start, open LED protection, adjustable
  switching frequency and DC dimming control are integrated into the part, making the LT3466 LED driver an
  ideal solution for space-constrained portable devices
  such as cellular phones, PDAs and digital cameras.
  Li-Ion to a 2-LED and a 4-LED Display
  Figure 1 shows a white LED driver to backlight two
  displays, a 4-LED main and a 2-LED sub display. This
  design generates a constant 20mA in each white LED
  string from Li-Ion (3V ~ 4.2V) or 5V adapter input. Two
  independent dimming and shutdown controls (via CTRL1
  3V TO 5V
  CIN
  1ВµF
  L2
  15ВµH L1
  15ВµH
  SW1
  COUT1 …

Статьи

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  Tiny Device Drives 20 White LEDs from a Single Cell Li-Ion Battery &mdash LT Journal
  PDF, 227 Кб, Файл опубликован: 1 май 2004
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  DESIGN FEATURES Tiny Device Drives 20 White LEDs from
  by Gurjit Thandi
  a Single Cell Li-Ion Battery
  Introduction
  White LEDs are gaining popularity as
  the backlighting source for the LCD
  displays used in handheld devices,
  mainly due to their improved efficiency
  and shrinking costs. White LEDs are
  also making inroads into the larger
  LCD displays used in automotive instrument panels and car radios. The
  LT3466 simplifies the task of fitting
  the LED driver circuitry into the latest devices by providing a dual high
  efficiency, constant current white LED
  driver in a space-saving 3mm Г— 3mm
  DFN package. The LT3466 is designed
  to drive up to 20 white LEDs from a
  single cell Li-Ion battery input with
  greater than 80% efficiency. It also
  provides space-and component-sav-ings with integrated Schottky diodes
  and internal compensation. 200mV, high accuracy (В±4%) reference
  voltage is provided to program the LED
  current. …

Модельный ряд

Классификация производителя

• Power Management > LED Driver ICs > Step-Up (Boost) LED Drivers

Варианты написания:

LT3466EFEPBF, LT3466EFE PBF