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LT3591 - 典型应用图例:
LT3591典型应用图例一
LT3591典型应用图例二
LT3591 - 封装图解:
LT3591封装图解一
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Linear产品 - LT3591介绍
LT3591 - LT3591是White LED Driver with Integrated Schottky in 3mm x 2mm DFN

LT3591是Linear公司的一款升压型 LED 驱动器产品,LT3591是White LED Driver with Integrated Schottky in 3mm x 2mm DFN,本站介绍了LT3591的封装应用图解、特点和优点、功能等,并给出了与LT3591相关的凌力尔特元器件型号供参考。

LT3591 - White LED Driver with Integrated Schottky in 3mm x 2mm DFN

LT3591 - White LED Driver with Integrated Schottky in 3mm x 2mm DFN - Linear Technology(凌力尔特)

功能描述

The LT3591 is a fixed frequency step-up DC/DC converter speci? cally designed to drive up to ten white LEDs in series from a Li-Ion cell. Series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast resistors. The device features a unique high side LED current sense that enables the part to function as a “one wire current source;” one side of the LED string can be returned to ground anywhere, allowing a simpler one wire LED connection. Traditional LED drivers use a grounded resistor to sense LED current, requiring a 2-wire connection to the LED string.

The high switching frequency allows the use of tiny inductors and capacitors. A single pin performs both shutdown and accurate LED dimming control. Few external components are needed: open-LED protection and the Schottky diode are all contained inside a low pro? le 3mm × 2mm DFN package.

特点
  • Drives Up to Ten White LEDs from a 3V Supply
  • High Side Sense Allows “One Wire Current Source”
  • Internal Schottky Diode
  • One Pin Dimming and Shutdown
  • 80:1 True Color PWMTM Dimming Range
  • 42V Open LED Protection
  • 1MHz Switching Frequency
  • ±5% Reference Accuracy
  • VIN Range: 2.5V to 12V
  • Requires Only 2.2µF Output Capacitor
  • Low Profile 8-Lead DFN Package
  • (3mm × 2mm × 0.75mm)
  • 应用
  • Tape and Reel: Add #TR
  • Lead Free: Add #PBF
  • Lead Free Tape and Reel: Add #TRPBF
  • 以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格(美元)
    器件型号 封装 温度 价格 (以 1 ~ 99 片为批量) 价格 (以 1000 片为批量)
    LT3591EDDB 3x2 DFN-8 E $2.00
    LT3591EDDB#PBF 3x2 DFN-8 E $2.00
    LT3591EDDB#TRMPBF 3x2 DFN-8 E $2.00 $1.45
    LT3591EDDB#TRPBF 3x2 DFN-8 E $2.00 $1.40
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