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LT1680 - 典型应用图例：
LT1680典型应用图例一
LT1680典型应用图例二
LT1680 - 封装图解：
LT1680封装图解一
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LINEAR产品 - LT1680介绍

LT1680 - LT1680是High Power DC/DC Step-Up Controller

LT1680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，LT1680是LT1680是High Power DC/DC Step-Up Controller，本站介绍了LT1680的封装应用图解、特点和优点、功能等，并给出了与LT1680相关的LINEAR元器件型号供参考。

LT1680 - LT1680是High Power DC/DC Step-Up Controller - 反激式、正激式和隔离式控制器 - 电源管理 - 凌力尔特

LT1680 - High Power DC/DC Step-Up Controller

LT1680 - High Power DC/DC Step-Up Controller - Linear Technology（凌力尔特）

功能描述
The LT1680 is a high power, current mode switching power supply controller optimized for boost topologies. The IC drives an N-channel MOSFET switch for DC/DC converter applications up to 60V input. A high current gate drive output handles up to 10,000pF gate capacitance, enabling the construction of high power DC/DC converters. Current sense common mode range up to 60V allows current sensing to be referenced to the input supply, eliminating the need for sense blanking circuits.

The LT1680 incorporates programmable average current limiting allowing accurate limiting of DC current in the magnetics, independent of ripple current. User adjustable slope compensation provides stable operation at duty cycles up to 90%.

The LT1680 operating frequency is programmable and can be synchronized up to 200kHz. Minimum off-time operation provides switch protection. The IC also incorporates a soft start feature that is gated by both shutdown and undervoltage lockout conditions.

特点
  • High Voltage: Operation Up to 60V
  • High Current: N-Channel Drive Handles Up to 10,000pF Gate Capacitance
  • Programmable Average Current Limiting
  • 5V Reference Output with 10mA External Loading Capability
  • Fixed Frequency Current Mode Operation
  • Oscillator Synchronizable Up to 200kHz
  • Undervoltage Lockout with Hysteresis
  • Programmable Start Inhibit for Power Supply Sequencing and Protection
  • User Adjustable Slope Compensation
    • 应用
  • High Power Single Board Systems
  • Distributed Power Converters
  • Industrial Control Systems
  • Lead-Acid Battery Back-Up Systems
  • 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)
    LT1680CN N-16 C $4.90 $4.00
    LT1680CN#PBF N-16 C $4.90 $4.00
    LT1680CSW SW-16 C $5.15 $4.20
    LT1680CSW#PBF SW-16 C $5.15 $4.20
    LT1680CSW#TR SW-16 C $4.26
    LT1680CSW#TRPBF SW-16 C $4.26
    LT1680IN N-16 I $5.90 $4.80
    LT1680IN#PBF N-16 I $5.90 $4.80
    LT1680ISW SW-16 I $6.15 $5.00
    LT1680ISW#PBF SW-16 I $6.15 $5.00
    LT1680ISW#TR SW-16 I $5.06
    LT1680ISW#TRPBF SW-16 I $5.06
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  • LT3757 - 升压、反激式、SEPIC 和负输出控制器
  • LT3798 - 具备有源 PFC 功能的隔离型 No Opto 耦合器反激式控制器
  • LT3748 - 100V 隔离型反激式控制器
  • LTC3789 - 高效率、同步、四开关降压-升压型控制器
  • LTC1871 - 宽输入范围、No RSENSE? 电流模式升压、反激和 SEPIC 控制器
  • LT8705 - 80V VIN 和 VOUT 同步、四开关、降压-升压型 DC/DC 控制器
  • LT3080 - 可调 1.1A、单电阻、低压差稳压器
  • LT3796 - 具双电流检测的 100V 恒定电流和恒定电压控制器
  • LT4320 / LT4320-1 - 理想二极管桥控制器
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