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LTC3705 - 典型应用图例：
LTC3705典型应用图例一
LTC3705 - 封装图解：
LTC3705封装图解一
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LINEAR产品 - LTC3705介绍

LTC3705 - LTC3705是2-Switch Forward Controller and Gate Driver

LTC3705是LINEAR凌力尔特公司的一款反激式、正激式和隔离式控制器产品，LTC3705是LTC3705是2-Switch Forward Controller and Gate Driver，本站介绍了LTC3705的封装应用图解、特点和优点、功能等，并给出了与LTC3705相关的LINEAR元器件型号供参考。

LTC3705 - LTC3705是2-Switch Forward Controller and Gate Driver - 反激式、正激式和隔离式控制器 - 电源管理 - 凌力尔特

LTC3705 - 2-Switch Forward Controller and Gate Driver

LTC3705 - 2-Switch Forward Controller and Gate Driver - Linear Technology（凌力尔特）

功能描述
The LTC3705 is a controller for a 2-switch forward converter and includes on-chip bottom and top gate drivers that do not require external transformers. For secondary-side control, combine the LTC3705 with the LTC3706 PolyPhase secondary-side synchronous forward controller to create a complete forward converter using a minimum of discrete parts. A proprietary scheme is used to multiplex gate drive signals across the isolation barrier through a tiny pulse transformer. The on-chip rectifier and the same pulse transformer provide gate drive bias power.

Alternatively, the LTC3705 can be used as a standalone voltage mode controller in a primary-side control architecture with optoisolator feedback. Voltage feedforward provides excellent line regulation and transient response.

特点
  • High-Speed Top and Bottom Gate Drivers for
  • 2-Switch Forward Converter
  • On-Chip Rectifier and Self-Starting Architecture
  • Eliminate Need for Separate Gate Drive Bias Supply
  • Wide Input Voltage Supply Range: 18V to 80V
  • Tolerant of 100V Input Voltage Transients
  • Linear Regulator Controller for Fast Start-Up
  • Precision UVLO with Adjustable Hysteresis
  • Overcurrent Protection
  • Volt-Second Limit Prevents Transformer Core Saturation
  • Voltage Feedforward for Fast Transient Response
  • Available in 16-Lead Narrow SSOP Package
    • 应用
  • Isolated 48V Telecommunication Systems
  • Internet Servers and Routers
  • Distributed Power Step-Down Converters
  • Automotive and Heavy Equipment
    • 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)
    LTC3705EGN SSOP-16 E $3.76 $2.63
    LTC3705EGN#PBF SSOP-16 E $3.76 $2.63
    LTC3705EGN#TR SSOP-16 E $2.69
    LTC3705EGN#TRPBF SSOP-16 E $2.69
    LTC3705IGN SSOP-16 I $4.03 $2.89
    LTC3705IGN#PBF SSOP-16 I $4.03 $2.89
    LTC3705IGN#TR SSOP-16 I $2.95
    LTC3705IGN#TRPBF SSOP-16 I $2.95
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  • LT3748 - 100V 隔离型反激式控制器
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  • LT3758 - 高输入电压、升压、反激式、SEPIC 和负输出控制器
  • LTC3725 - Single-Switch Forward Controller and Gate Driver
  • LTC3722-1 - 同步、双模式、相位调制的全桥式控制器
  • LT3757 - 升压、反激式、SEPIC 和负输出控制器
  • LTC3766 - 高效率、副端同步正激式控制器
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  • LT3798 - 具备有源 PFC 功能的隔离型 No Opto 耦合器反激式控制器
  • LT4363 - 具电流限制功能的高电压浪涌抑制器
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