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LT3431 - 典型应用图例：
LT3431典型应用图例一
LT3431典型应用图例二
LT3431 - 封装图解：
LT3431封装图解一
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LINEAR产品 - LT3431介绍

LT3431 - LT3431是High Voltage, 3A, 500kHz Step-Down Switching Regulator

LT3431是LINEAR凌力尔特公司的一款内部开关电源降压产品，LT3431是LT3431是High Voltage, 3A, 500kHz Step-Down Switching Regulator，本站介绍了LT3431的封装应用图解、特点和优点、功能等，并给出了与LT3431相关的LINEAR元器件型号供参考。

LT3431 - LT3431是High Voltage, 3A, 500kHz Step-Down Switching Regulator - 内部开关电源降压 - 电源管理 - 凌力尔特

LT3431 - High Voltage, 3A, 500kHz Step-Down Switching Regulator

LT3431 - High Voltage, 3A, 500kHz Step-Down Switching Regulator - Linear Technology（凌力尔特）

功能描述

The LT3431 is a 500kHz monolithic buck switching regulator that accepts input voltages up to 60V. A high efficiency 3A, 0.1 Ohm switch is included on the die along with all the necessary oscillator, control and logic circuitry. A current mode architecture provides fast transient response and good loop stability.

Special design techniques and a new high voltage process achieve high efficiency over a wide input range. Efficiency is maintained over a wide output current range by using the output to bias the circuitry and by utilizing a supply boost capacitor to saturate the power switch. Patented circuitry maintains peak switch current over the full duty cycle range. A shutdown pin reduces supply current to 30µA and the device can be externally synchronized from 580kHz to 700kHz with logic level inputs.

The LT3431 is available in a thermally enhanced 16-pin TSSOP package.

特点
  • Wide Input Range: 5.5V to 60V
  • 3A Peak Switch Current
  • Small Thermally Enhanced 16-Pin TSSOP Package
  • Constant 500kHz Switching Frequency
  • Saturating Switch Design: 0.1 Ohm
  • Peak Switch Current Maintained Over Full Duty Cycle Range
  • Effective Supply Current: 2.5mA
  • Shutdown Current: 30µA
  • 1.2V Feedback Reference Voltage
  • Easily Synchronizable
  • Cycle-by-Cycle Current Limiting
    • 应用
  • Industrial and Automotive Power Supplies
  • Portable Computers
  • 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)
    LT3431EFE TSSOP-16 E $7.07 $4.95
    LT3431EFE#PBF TSSOP-16 E $7.07 $4.95
    LT3431EFE#TR TSSOP-16 E $5.07
    LT3431EFE#TRPBF TSSOP-16 E $5.07
    LT3431IFE TSSOP-16 I $8.13 $5.69
    LT3431IFE#PBF TSSOP-16 I $8.13 $5.69
    LT3431IFE#TR TSSOP-16 I $5.81
    LT3431IFE#TRPBF TSSOP-16 I $5.81
    下面可能是您感兴趣的Linear Technology（凌力尔特）元器件
  • LT3430 - High Voltage, 3A, 200kHz Step-Down Switching Regulator
  • LT3435 - High Voltage 3A, 500kHz Step-Down Switching Regulator with 100μA Quiescent Current
  • LT1074 - 降压型开关稳压器
  • LT3980 - 具 85μA 静态电流的 58V、2A、2.4MHz 降压型开关稳压器
  • LT3434 - High Voltage 3A, 200kHz Step-Down Switching Regulator with 100μA Quiescent Current
  • LT8610 - 具 2.5μA 静态电流的 42V、2.5A 同步降压型稳压器
  • LT3992 - 单片式、双通道跟踪、3A 降压型开关稳压器
  • LT3724 - 高电压、电流模式开关稳压控制器
  • LT3995 - 具 2.7μA 静态电流的 60V、3A、2MHz 降压型开关稳压器
  • LTC3891 - 低 Iq、60V、同步降压型控制器
    • 下面可能是您感兴趣的凌力尔特公司内部开关电源降压元器件
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