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LTC1775 - 典型应用图例：
LTC1775典型应用图例一
LTC1775典型应用图例二
LTC1775 - 封装图解：
LTC1775封装图解一
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LINEAR产品 - LTC1775介绍

LTC1775 - LTC1775是High Power No RSENSE™ Current Mode Synchronous Step-Down Switching Regulator

LTC1775是LINEAR凌力尔特公司的一款外部开关电源控制器产品，LTC1775是LTC1775是High Power No RSENSE™ Current Mode Synchronous Step-Down Switching Regulator，本站介绍了LTC1775的封装应用图解、特点和优点、功能等，并给出了与LTC1775相关的LINEAR元器件型号供参考。

LTC1775 - LTC1775是High Power No RSENSE™ Current Mode Synchronous Step-Down Switching Regulator - 外部开关电源控制器 - 电源管理 - 凌力尔特

LTC1775 - High Power No RSENSE™ Current Mode Synchronous Step-Down Switching Regulator

LTC1775 - High Power No RSENSE™ Current Mode Synchronous Step-Down Switching Regulator - Linear Technology（凌力尔特）

功能描述
The LTC1775 is a synchronous step-down switching regulator controller that drives external N-channel power MOSFETs using few external components. Current mode control with MOSFET VDS sensing eliminates the need for a sense resistor and improves efficiency. Largely similar to the LTC1625, the LTC1775 has twice the maximum sense voltage for high current applications. The frequency of a nominal 150kHz internal oscillator can be synchronized to an external clock over a 1.5:1 frequency range. Burst Mode™ operation at low load currents reduces switching losses and low dropout operation extends operating time in battery-powered systems. A forced continuous mode control pin can assist secondary winding regulation by disabling Burst Mode operation when the main output is lightly loaded. Fault protection is provided by foldback current limiting and an output overvoltage comparator. An external capacitor attached to the RUN/SS pin provides soft start capability for supply sequencing. A wide supply range allows operation from 4V (4.3V for LTC1775I) to 36V at the input and 1.19V to VIN at the output.
特点
  • Highest Efficiency Current Mode Controller
  • No Sense Resistor Required
  • 300mV Maximum Current Sense Voltage
  • Stable High Current Operation
  • Dual N-Channel MOSFET Synchronous Drive
  • Wide VIN Range: 4V to 36V
  • Wide VOUT Range: 1.19V to VIN
  • ±1% 1.19V Reference
  • Programmable Fixed Frequency with Injection Lock
  • Very Low Drop Out Operation: 99% Duty Cycle
  • Forced Continuous Mode Control Pin
  • Optional Programmable Soft Start
  • Pin Selectable Output Voltage
  • Foldback Current Limit
  • Output Overvoltage Protection
  • Logic Controlled Micropower Shutdown: IQ< 30µA
  • Available in 16-Lead Narrow SSOP and SO Packages
    • 应用
  • Notebook Computers
  • Automotive Electronics
  • Battery Chargers
  • Distributed Power Systems
    • 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)
    LTC1775CGN SSOP-16 C $5.90 $5.00
    LTC1775CGN#PBF SSOP-16 C $5.90 $5.00
    LTC1775CGN#TR SSOP-16 C $5.06
    LTC1775CGN#TRPBF SSOP-16 C $5.06
    LTC1775CS SO-16 C $5.55 $4.65
    LTC1775CS#PBF SO-16 C $5.55 $4.65
    LTC1775CS#TR SO-16 C $4.71
    LTC1775CS#TRPBF SO-16 C $4.71
    LTC1775IGN SSOP-16 I $7.35 $6.00
    LTC1775IGN#PBF SSOP-16 I $7.35 $6.00
    LTC1775IGN#TR SSOP-16 I $6.06
    LTC1775IGN#TRPBF SSOP-16 I $6.06
    LTC1775IS SO-16 I $6.85 $5.60
    LTC1775IS#PBF SO-16 I $6.85 $5.60
    LTC1775IS#TR SO-16 I $5.66
    LTC1775IS#TRPBF SO-16 I $5.66
    下面可能是您感兴趣的Linear Technology（凌力尔特）元器件
  • LTC1624 - High Efficiency SO-8 N-Channel Switching Regulator Controller
  • LTC3703 - 100V 同步开关稳压控制器
  • LTC1625 - No RSENSETM Current Mode Synchronous Step-Down Switching Regulator
  • LTC3810 - 100V 电流模式同步开关稳压控制器
  • LTC3864 - 具 100% 占空比能力的 60V、低 IQ、降压型 DC/DC 控制器
  • LT3800 - 高电压同步电流模式降压型控制器
  • LTC3878 - 快速、宽工作范围、No Rsense、降压型控制器
  • LT3844 - 具可设置工作频率的高电压、电流模式开关稳压控制器
  • LTC3891 - 低 Iq、60V、同步降压型控制器
  • LT3741 / LT3741-1 - 高功率、恒定电流、恒定电压、降压型控制器
    • 下面可能是您感兴趣的凌力尔特公司外部开关电源控制器元器件
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