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LT1374 - 典型应用图例:
LT1374典型应用图例一
LT1374典型应用图例二
LT1374 - 封装图解:
LT1374封装图解一
LT1374封装图解二
LT1374封装图解三
LT1374封装图解四
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Linear产品 - LT1374介绍
LT1374 - LT1374是4.5A, 500kHz Step-Down Switching Regulator

LT1374是Linear公司的一款SEPIC 稳压器产品,LT1374是4.5A, 500kHz Step-Down Switching Regulator,本站介绍了LT1374的封装应用图解、特点和优点、功能等,并给出了与LT1374相关的凌力尔特元器件型号供参考。

LT1374 - 4.5A, 500kHz Step-Down Switching Regulator

LT1374 - 4.5A, 500kHz Step-Down Switching Regulator - Linear Technology(凌力尔特)

功能描述

The LT1374 is a 500kHz monolithic buck mode switching regulator. A 4.5A switch is included on the die along with all the necessary oscillator, control and logic circuitry. High switching frequency allows a considerable reduction in the size of external components. The topology is current mode for fast transient response and good loop stability. Both fixed output voltage and adjustable parts are available.

A special high speed bipolar process and new design techniques achieve high efficiency at high switching frequency. 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.

The LT1374 is available in standard 7-pin DD, TO-220, fused lead SO-8 and 16-pin exposed pad TSSOP packages. Full cycle-by-cycle short-circuit protection and thermal shutdown are provided. Standard surface mount external parts may be used, including the inductor and capacitors. There is the optional function of shutdown or synchronization. A shutdown signal reduces supply current to 20µA. Synchronization allows an external logic level signal to increase the internal oscillator from 580kHz to 1MHz.

Protected by U.S. Patents, Including 6111439, 5668493, 5656965

特点
  • Constant 500kHz Switching Frequency
  • High Power 16-Pin TSSOP Package Available
  • Uses All Surface Mount Components
  • Inductor Size Reduced to 1.8µH
  • Saturating Switch Design: 0.07Ω
  • Effective Supply Current: 2.5mA
  • Shutdown Current: 20µA
  • Cycle-by-Cycle Current Limiting
  • Easily Synchronizable
  • 应用
  • Portable Computers
  • Battery-Powered Systems
  • Battery Chargers
  • Distributed Power
  • 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)
    LT1374CFE TSSOP-16 C $5.38 $4.55
    LT1374CFE#PBF TSSOP-16 C $5.38 $4.55
    LT1374CFE#TR TSSOP-16 C $4.67
    LT1374CFE#TRPBF TSSOP-16 C $4.67
    LT1374CR DDPAK-7 C $5.50 $4.70
    LT1374CR-5 DDPAK-7 C $5.50 $4.70
    LT1374CR-5#PBF DDPAK-7 C $5.50 $4.70
    LT1374CR-5#TR DDPAK-7 C $4.82
    LT1374CR-5#TRPBF DDPAK-7 C $4.82
    LT1374CR-5SYNC DDPAK-7 C $5.50 $4.70
    LT1374CR-5SYNC#PBF DDPAK-7 C $5.50 $4.70
    LT1374CR-5Sync#TR DDPAK-7 C $4.82
    LT1374CR-5Sync#TRPBF DDPAK-7 C $4.82
    LT1374CR-SYNC DDPAK-7 C $5.50 $4.70
    LT1374CR-SYNC#PBF DDPAK-7 C $5.50 $4.70
    LT1374CR-Sync#TR DDPAK-7 C $4.82
    LT1374CR-Sync#TRPBF DDPAK-7 C $4.82
    LT1374CR#PBF DDPAK-7 C $5.50 $4.70
    LT1374CR#TR DDPAK-7 C $4.82
    LT1374CR#TRPBF DDPAK-7 C $4.82
    LT1374CS8 SO-8 C $5.00 $4.40
    LT1374CS8-5 SO-8 C $5.00 $4.40
    LT1374CS8-5#PBF SO-8 C $5.00 $4.40
    LT1374CS8-5#TR SO-8 C $4.46
    LT1374CS8-5#TRPBF SO-8 C $4.46
    LT1374CS8-5SYNC SO-8 C $5.00 $4.40
    LT1374CS8-5SYNC#PBF SO-8 C $5.00 $4.40
    LT1374CS8-5Sync#TR SO-8 C $4.46
    LT1374CS8-5Sync#TRPBF SO-8 C $4.46
    LT1374CS8-SYNC SO-8 C $5.00 $4.40
    LT1374CS8-SYNC#PBF SO-8 C $5.00 $4.40
    LT1374CS8-Sync#TR SO-8 C $4.46
    LT1374CS8-Sync#TRPBF SO-8 C $4.46
    LT1374CS8#PBF SO-8 C $5.00 $4.40
    LT1374CS8#TR SO-8 C $4.46
    LT1374CS8#TRPBF SO-8 C $4.46
    LT1374CT7 TO-220 C $5.35 $4.60
    LT1374CT7-5 TO-220 C $5.35 $4.60
    LT1374CT7-5#PBF TO-220 C $5.35 $4.60
    LT1374CT7#PBF TO-220 C $5.35 $4.60
    LT1374HVCFE TSSOP-16 C $5.92 $5.00
    LT1374HVCFE#PBF TSSOP-16 C $5.92 $5.00
    LT1374HVCFE#TR TSSOP-16 C $5.12
    LT1374HVCFE#TRPBF TSSOP-16 C $5.12
    LT1374HVCR DDPAK-7 C $6.15 $5.10
    LT1374HVCR#PBF DDPAK-7 C $6.15 $5.10
    LT1374HVCR#TR DDPAK-7 C $5.22
    LT1374HVCR#TRPBF DDPAK-7 C $5.22
    LT1374HVCS8 SO-8 C $5.75 $4.85
    LT1374HVCS8#PBF SO-8 C $5.75 $4.85
    LT1374HVCS8#TR SO-8 C $4.91
    LT1374HVCS8#TRPBF SO-8 C $4.91
    LT1374HVIFE TSSOP-16 I $6.74 $5.70
    LT1374HVIFE#PBF TSSOP-16 I $6.74 $5.70
    LT1374HVIFE#TR TSSOP-16 I $5.82
    LT1374HVIFE#TRPBF TSSOP-16 I $5.82
    LT1374HVIR DDPAK-7 I $7.00 $5.90
    LT1374HVIR#PBF DDPAK-7 I $7.00 $5.90
    LT1374HVIR#TR DDPAK-7 I $6.02
    LT1374HVIR#TRPBF DDPAK-7 I $6.02
    LT1374HVIS8 SO-8 I $6.60 $5.55
    LT1374HVIS8#PBF SO-8 I $6.60 $5.55
    LT1374HVIS8#TR SO-8 I $5.61
    LT1374HVIS8#TRPBF SO-8 I $5.61
    LT1374IFE TSSOP-16 I $6.15 $5.20
    LT1374IFE#PBF TSSOP-16 I $6.15 $5.20
    LT1374IFE#TR TSSOP-16 I $5.32
    LT1374IFE#TRPBF TSSOP-16 I $5.32
    LT1374IR DDPAK-7 I $6.30 $5.40
    LT1374IR-5 DDPAK-7 I $6.30 $5.40
    LT1374IR-5#PBF DDPAK-7 I $6.30 $5.40
    LT1374IR-5#TRPBF DDPAK-7 I $5.52
    LT1374IR-5SYNC DDPAK-7 I $6.30 $5.40
    LT1374IR-5SYNC#PBF DDPAK-7 I $6.30 $5.40
    LT1374IR-SYNC DDPAK-7 I $6.30 $5.40
    LT1374IR-SYNC#PBF DDPAK-7 I $6.30 $5.40
    LT1374IR#PBF DDPAK-7 I $6.30 $5.40
    LT1374IR#TRPBF DDPAK-7 I $5.52
    LT1374IS8 SO-8 I $5.75 $5.05
    LT1374IS8-5 SO-8 I $5.75 $5.05
    LT1374IS8-5#PBF SO-8 I $5.75 $5.05
    LT1374IS8-5#TR SO-8 I $5.11
    LT1374IS8-5#TRPBF SO-8 I $5.11
    LT1374IS8-5SYNC SO-8 I $5.75 $5.05
    LT1374IS8-5SYNC#PBF SO-8 I $5.75 $5.05
    LT1374IS8-SYNC SO-8 I $5.75 $5.05
    LT1374IS8-SYNC#PBF SO-8 I $5.75 $5.05
    LT1374IS8#PBF SO-8 I $5.75 $5.05
    LT1374IS8#TR SO-8 I $5.11
    LT1374IS8#TRPBF SO-8 I $5.11
    LT1374IT7 TO-220 I $6.15 $5.30
    LT1374IT7-5 TO-220 I $6.15 $5.30
    LT1374IT7-5#PBF TO-220 I $6.15 $5.30
    LT1374IT7#PBF TO-220 I $6.15 $5.30
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