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LTC1695 - 典型应用图例：
LTC1695典型应用图例一
LTC1695典型应用图例二
LTC1695 - 封装图解：
LTC1695封装图解一
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LINEAR产品 - LTC1695介绍

LTC1695 - LTC1695是SMBus/I2C Fan Speed Controller in SOT-23

LTC1695是LINEAR凌力尔特公司的一款扇速控制器产品，LTC1695是LTC1695是SMBus/I2C Fan Speed Controller in SOT-23，本站介绍了LTC1695的封装应用图解、特点和优点、功能等，并给出了与LTC1695相关的LINEAR元器件型号供参考。

LTC1695 - LTC1695是SMBus/I2C Fan Speed Controller in SOT-23 - 扇速控制器 - 电源管理 - 凌力尔特

LTC1695 - SMBus/I2C Fan Speed Controller in SOT-23

LTC1695 - SMBus/I2C Fan Speed Controller in SOT-23 - Linear Technology（凌力尔特）

功能描述
The LTC1695 fan speed controller provides all the functions necessary for a power management microprocessor to regulate the speed of a 5V brushless DC fan via a 2-wire SMBus/I²C interface. Fan speed is controlled according to the system’s required temperature profile and permits lower fan power consumption, longer battery run time and lower acoustical generated noise versus systems that only provide simple on-off control for the fan. The LTC1695 incorporates a 180mA low dropout linear regulator, a 2-wire SMBus/I²C interface and a 6-bit DAC. Fan speed is controlled by varying the fan’s terminal voltage through the output voltage of the LTC1695’s linear regulator. The LTC1695’s output voltage is programmed by sending a 6-bit digital code to the LTC1695 DAC via the SMBus. To eliminate fan start-up problems at lower fan voltages, users can enable the LTC1695’s boost start feature that provides the DAC’s full-scale output voltage for 250ms before decreasing to the programmed output voltage. The LTC1695 includes output current limiting and thermal shutdown as well as status monitors that can be read back by the microprocessor during fault conditions. The LTC1695 is available in a 5-lead SOT-23 package.
特点
  • Complete SMBus/I²C™ Brushless DC Fan SpeedControl System in a 5-Pin SOT-23 package
  • 0.75Ohms PMOS Linear Regulator with 180mAOutput Current Rating
  • 0V to 4.922V Output Voltage Range Controlled by a6-Bit DAC
  • Simple 2-Wire SMBus/I²C Interface
  • 250ms Internal Timer Ensures Fan Start-Up
  • Current Limit and Thermal Shutdown
  • Fault Status Indication via SMBus Host Readback
    • 应用
  • Notebook Computers
  • Spot Cooling
  • Portable Instruments
  • Battery-Powered Systems
  • DC Motor Control
  • White LED Power Supplies
  • Programmable Low Dropout Regulator
    • 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)
    LTC1695CS5 SOT-23 C $1.81
    LTC1695CS5#PBF SOT-23 C $1.81
    LTC1695CS5#TR SOT-23 C $1.81 $1.51
    LTC1695CS5#TRM SOT-23 C $1.81 $1.53
    LTC1695CS5#TRMPBF SOT-23 C $1.81 $1.53
    LTC1695CS5#TRPBF SOT-23 C $1.81 $1.51
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