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LT1950 - 典型应用图例：
LT1950典型应用图例一
LT1950典型应用图例二
LT1950 - 封装图解：
LT1950封装图解一
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LINEAR产品 - LT1950介绍

LT1950 - LT1950是Single Switch PWM Controller with Auxiliary Boost Converter

LT1950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，LT1950是LT1950是Single Switch PWM Controller with Auxiliary Boost Converter，本站介绍了LT1950的封装应用图解、特点和优点、功能等，并给出了与LT1950相关的LINEAR元器件型号供参考。

LT1950 - LT1950是Single Switch PWM Controller with Auxiliary Boost Converter - 反激式、正激式和隔离式控制器 - 电源管理 - 凌力尔特

LT1950 - Single Switch PWM Controller with Auxiliary Boost Converter

LT1950 - Single Switch PWM Controller with Auxiliary Boost Converter - Linear Technology（凌力尔特）

功能描述

The LT1950 is a wide input range, forward, boost, flyback and SEPIC controller that drives an N-channel power MOSFET with few external components required.

A resistor programmable duty cycle clamp can be used to generate a volt-second clamp for forward converter applications. An internal boost switcher is available for creating a separate supply for the output gate driver, allowing 10V gate drive from input voltages as low as 3V. The LT1950’s operating frequency can be set with an external resistor over a 100kHz to 500kHz range and a SYNC pin allows the part to be synchronized to an external clock. Additional programmability exists for leading edge blanking and slope compensation.

A fast current sense comparator achieves 60ns current sense delay and the error amplifier is a true voltage mode error amplifier, allowing a wide range of compensation networks. An accurate shutdown pin with programmable hysteresis is available for undervoltage lockout and shutdown. The LT1950 is available in a small 16-Pin SSOP package.

特点
  • Wide Input Range: 3V to 25V
  • Programmable Volt-Second Clamp
  • Output Power Levels from 25W to 500W
  • Auxiliary Boost Converter Provides 10V Gate Drive from VIN as Low as 3V
  • Programmable Operating Frequency (100kHz to 500kHz) with One External Resistor
  • Programmable Slope Compensation
  • Programmable Leading Edge Blanking
  • ±2% Internal 1.23V Reference
  • Accurate Shutdown Pin Threshold with Programmable Hysteresis
  • 60ns Current Sense Delay
  • 2.5V Auxiliary Reference Output
  • Synchronizable to an External Clock up to 1.5 • fOSC
  • Current Mode Control
  • Small 16-Pin SSOP Package
    • 应用
  • Telecom Power Supplies
  • Automotive Power Supplies
  • Portable Electronic Equipment
  • Isolated and Nonisolated DC/DC Converters
    • 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)
    LT1950EGN SSOP-16 E $4.20 $2.90
    LT1950EGN#PBF SSOP-16 E $4.20 $2.90
    LT1950EGN#TR SSOP-16 E $2.96
    LT1950EGN#TRPBF SSOP-16 E $2.96
    LT1950IGN SSOP-16 I $4.73 $3.20
    LT1950IGN#PBF SSOP-16 I $4.73 $3.20
    LT1950IGN#TR SSOP-16 I $3.26
    LT1950IGN#TRPBF SSOP-16 I $3.26
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