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LTC1627 - 典型应用图例：
LTC1627典型应用图例一
LTC1627典型应用图例二
LTC1627 - 封装图解：
LTC1627封装图解一
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LINEAR产品 - LTC1627介绍

LTC1627 - LTC1627是Monolithic Synchronous Step-Down Switching Regulator

LTC1627是LINEAR凌力尔特公司的一款内部开关电源降压产品，LTC1627是LTC1627是Monolithic Synchronous Step-Down Switching Regulator，本站介绍了LTC1627的封装应用图解、特点和优点、功能等，并给出了与LTC1627相关的LINEAR元器件型号供参考。

LTC1627 - LTC1627是Monolithic Synchronous Step-Down Switching Regulator - 内部开关电源降压 - 电源管理 - 凌力尔特

LTC1627 - Monolithic Synchronous Step-Down Switching Regulator

LTC1627 - Monolithic Synchronous Step-Down Switching Regulator - Linear Technology（凌力尔特）

功能描述
The LTC1627 is a monolithic current mode synchronous buck regulator using a fixed frequency architecture. The operating supply range is from 8.5V down to 2.65V, making it suitable for one or two lithium-ion battery-powered applications. Burst Mode operation provides high efficiency at low load currents. 100% duty cycle provides low dropout operation, which extends operating time in battery-operated systems. The operating frequency is internally set at 350kHz, allowing the use of small surface mount inductors. For switching noise sensitive applications it can be externally synchronized up to 525kHz. The SYNC/FCB control pin guarantees regulation of secondary windings regardless of load on the main output by forcing continuous operation. Burst Mode operation is inhibited during synchronization or when the SYNC/FCB pin is pulled low to reduce noise and RF interference. Soft-start is provided by an external capacitor. Optional bootstrapping enhances the internal switch drive for single lithium-ion cell applications. The internal synchronous switch increases efficiency and eliminates the need for an external Schottky diode, saving components and board space. The LTC1627 comes in an 8-lead SO package.
特点
  • High Efficiency: Up to 95%
  • Constant Frequency 350kHz Operation
  • 2.65V to 8.5V VIN Range
  • VOUT from 0.8V to VIN, IOUT to 500mA
  • No Schottky Diode Required
  • Synchronizable Up to 525kHz
  • Selectable Burst Mode™ Operation
  • Low Dropout Operation: 100% Duty Cycle
  • Precision 2.5V Undervoltage Lockout
  • Secondary Winding Regulation
  • Current Mode Operation for Excellent Line and Load Transient Response
  • Low Quiescent Current: 200µA
  • Shutdown Mode Draws Only 15µA Supply Current
  • ±1.5% Reference Accuracy
  • Available in 8-Lead SO Package
    • 应用
  • Cellular Telephones
  • Portable Instruments
  • Wireless Modems
  • RF Communications
  • Distributed Power Systems
  • Scanners
  • Single and Dual Cell Lithium
    • 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)
    LTC1627CS8 SO-8 C $2.35 $2.05
    LTC1627CS8#PBF SO-8 C $2.35 $2.05
    LTC1627CS8#TR SO-8 C $2.11
    LTC1627CS8#TRPBF SO-8 C $2.11
    LTC1627IS8 SO-8 I $3.55 $3.05
    LTC1627IS8#PBF SO-8 I $3.55 $3.05
    LTC1627IS8#TR SO-8 I $3.11
    LTC1627IS8#TRPBF SO-8 I $3.11
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  • LTC6655 - 0.25ppm 噪声、低漂移、精准基准系列
  • LT1375 - 1.5A、500kHz 降压型开关稳压器
  • LT3470 - 具集成升压和箝位二极管的微功率降压型稳压器
  • LT3080 - 可调 1.1A、单电阻、低压差稳压器
  • LTC4364 - 具理想二极管的浪涌抑制器
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