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LT1956 - 典型应用图例:
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LT1956 - 封装图解:
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Linear产品 - LT1956介绍
LT1956 - LT1956是High Voltage, 1.5A, 500kHz Step-Down Switching Regulators

LT1956是Linear公司的一款内部开关电源降压产品,LT1956是High Voltage, 1.5A, 500kHz Step-Down Switching Regulators,本站介绍了LT1956的封装应用图解、特点和优点、功能等,并给出了与LT1956相关的凌力尔特元器件型号供参考。

LT1956 - High Voltage, 1.5A, 500kHz Step-Down Switching Regulators

LT1956 - High Voltage, 1.5A, 500kHz Step-Down Switching Regulators - Linear Technology(凌力尔特)

功能描述

The LT?1956/LT1956-5 are 500kHz monolithic buck switching regulators with an input voltage capability up to 60V. A high efficiency 1.5A, 0.2 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 25μA and the device can be externally synchronized from 580kHz to 700kHz with a logic level input.

The LT1956/LT1956-5 are available in fused-lead 16-pin SSOP and thermally enhanced TSSOP packages.

特点
  • Wide Input Range: 5.5V to 60V
  • 1.5A Peak Switch Current
  • Small 16-Pin SSOP Package or Thermally Enhanced TSSOP Package
  • Saturating Switch Design: 0.2 Ohms
  • Peak Switch Current Maintained Over Full Duty Cycle Range
  • Constant 500kHz Switching Frequency
  • Effective Supply Current: 2.5mA
  • Shutdown Current: 25µA
  • 1.2V Feedback Reference (LT1956)
  • 5V Fixed Output (LT1956-5)
  • Easily Synchronizable
  • Cycle-by-Cycle Current Limiting
  • 应用
  • High Voltage, Industrial and Automotive
  • Portable Computers
  • Battery-Powered Systems
  • 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)
    LT1956EFE TSSOP-16 E $5.36 $3.75
    LT1956EFE-5 TSSOP-16 E $5.36 $3.75
    LT1956EFE-5#PBF TSSOP-16 E $5.36 $3.75
    LT1956EFE-5#TR TSSOP-16 E $3.87
    LT1956EFE-5#TRPBF TSSOP-16 E $3.87
    LT1956EFE#PBF TSSOP-16 E $5.36 $3.75
    LT1956EFE#TR TSSOP-16 E $3.87
    LT1956EFE#TRPBF TSSOP-16 E $3.87
    LT1956EGN SSOP-16 E $4.32 $3.65
    LT1956EGN-5 SSOP-16 E $4.32 $3.65
    LT1956EGN-5#PBF SSOP-16 E $4.32 $3.65
    LT1956EGN-5#TR SSOP-16 E $3.71
    LT1956EGN-5#TRPBF SSOP-16 E $3.71
    LT1956EGN#PBF SSOP-16 E $4.32 $3.65
    LT1956EGN#TR SSOP-16 E $3.71
    LT1956EGN#TRPBF SSOP-16 E $3.71
    LT1956IFE TSSOP-16 I $6.36 $4.45
    LT1956IFE-5 TSSOP-16 I $6.36 $4.45
    LT1956IFE-5#PBF TSSOP-16 I $6.36 $4.45
    LT1956IFE-5#TR TSSOP-16 I $4.57
    LT1956IFE-5#TRPBF TSSOP-16 I $4.57
    LT1956IFE#PBF TSSOP-16 I $6.36 $4.45
    LT1956IFE#TR TSSOP-16 I $4.57
    LT1956IFE#TRPBF TSSOP-16 I $4.57
    LT1956IGN SSOP-16 I $5.15 $4.35
    LT1956IGN-5 SSOP-16 I $5.15 $4.35
    LT1956IGN-5#PBF SSOP-16 I $5.15 $4.35
    LT1956IGN-5#TR SSOP-16 I $4.41
    LT1956IGN-5#TRPBF SSOP-16 I $4.41
    LT1956IGN#PBF SSOP-16 I $5.15 $4.35
    LT1956IGN#TR SSOP-16 I $4.41
    LT1956IGN#TRPBF SSOP-16 I $4.41
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