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LTC3405A-1.8 - 典型应用图例：
LTC3405A-1.8典型应用图例一
LTC3405A-1.8典型应用图例二
LTC3405A-1.8 - 封装图解：
LTC3405A-1.8封装图解一
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LINEAR产品 - LTC3405A-1.8介绍

LTC3405A-1.8 - LTC3405A-1.8是1.5V, 1.8V, 1.5MHz, 300mA Synchronous Step-Down Regulators in ThinSOT

LTC3405A-1.8是LINEAR凌力尔特公司的一款微功率降压产品，LTC3405A-1.8是LTC3405A-1.8是1.5V, 1.8V, 1.5MHz, 300mA Synchronous Step-Down Regulators in ThinSOT，本站介绍了LTC3405A-1.8的封装应用图解、特点和优点、功能等，并给出了与LTC3405A-1.8相关的LINEAR元器件型号供参考。

LTC3405A-1.8 - LTC3405A-1.8是1.5V, 1.8V, 1.5MHz, 300mA Synchronous Step-Down Regulators in ThinSOT - 微功率降压 - 电源管理 - 凌力尔特

LTC3405A-1.8 - 1.5V, 1.8V, 1.5MHz, 300mA Synchronous Step-Down Regulators in ThinSOT

LTC3405A-1.8 - 1.5V, 1.8V, 1.5MHz, 300mA Synchronous Step-Down Regulators in ThinSOT - Linear Technology（凌力尔特）

功能描述

The LTC®3405A-1.5/LTC3405A-1.8 are high efficiencymonolithic synchronous buck regulators using a constantfrequency, current mode architecture. Supply currentduring operation is only 20μA and drops to <1µA inshutdown. The 2.5V to 5.5V input voltage range makes theLTC3405A-1.5/LTC3405A-1.8 ideally suited for singleLi-Ion battery-powered applications. 100% duty cycleprovides low dropout operation, extending battery life inportable systems.

Switching frequency is internally set at 1.5MHz, allowingthe use of small surface mount inductors and capacitors.

The LTC3405A-1.5/LTC3405A-1.8 are specifically designedto work well with ceramic output capacitors, achievingvery low output voltage ripple and a small PCB footprint.

The internal synchronous switch increases efficiency andeliminates the need for an external Schottky diode. TheLTC3405A-1.5/LTC3405A-1.8 are available in a low profile(1mm) ThinSOT package.

For adjustable output voltage, refer to the LTC3405A datasheet.

Protected by U.S. Patents, including 6580258, 5481178.

特点
  • High Efficiency: Up to 93%
  • Very Low Quiescent Current: Only 20µA During Operation
  • 300mA Output Current at VIN = 3V
  • 2.5V to 5.5V Input Voltage Range
  • 1.5MHz Constant Frequency Operation
  • No Schottky Diode Required
  • Low Dropout Operation: 100% Duty Cycle
  • Stable with Ceramic Capacitors
  • Shutdown Mode Draws <1µA Supply Current
  • ?3% Output Voltage Accuracy
  • Current Mode Operation for Excellent Line and Load Transient Response
  • Overtemperature Protected
  • Low Profile (1mm) ThinSOT™ Package
    • 应用
  • Cellular Telephones
  • Personal Information Appliances
  • Wireless and DSL Modems
  • Digital Still Cameras
  • MP3 Players
  • Portable Instruments
    • 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)
    LTC3405AES6-1.8 SOT-23 E $2.37
    LTC3405AES6-1.8#PBF SOT-23 E $2.37
    LTC3405AES6-1.8#TR SOT-23 E $2.37 $1.67
    LTC3405AES6-1.8#TRM SOT-23 E $2.37 $1.69
    LTC3405AES6-1.8#TRMPBF SOT-23 E $2.37 $1.69
    LTC3405AES6-1.8#TRPBF SOT-23 E $2.37 $1.67
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  • LTM8062 / LTM8062A - 32VIN、2A μModule 功率跟踪电池充电器
  • LTC4000 - 用于电池充电和电源管理的高电压、大电流控制器
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  • LT1934 - 采用 ThinSOT 和 DFN 封装的微功率、降压型开关稳压器
  • LT8471 - 具 2A 开关和同步功能的双通道、多拓扑 DC/DC 转换器
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