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LTC1923 - 典型应用图例：
LTC1923典型应用图例一
LTC1923 - 封装图解：
LTC1923封装图解一
LTC1923封装图解二
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LINEAR产品 - LTC1923介绍

LTC1923 - LTC1923是High Efficiency Thermoelectric Cooler Controller

LTC1923是LINEAR凌力尔特公司的一款热电冷却器控制器产品，LTC1923是LTC1923是High Efficiency Thermoelectric Cooler Controller，本站介绍了LTC1923的封装应用图解、特点和优点、功能等，并给出了与LTC1923相关的LINEAR元器件型号供参考。

LTC1923 - LTC1923是High Efficiency Thermoelectric Cooler Controller - 热电冷却器控制器 - 监视、控制和保护 - 凌力尔特

LTC1923 - High Efficiency Thermoelectric Cooler Controller

LTC1923 - High Efficiency Thermoelectric Cooler Controller - Linear Technology（凌力尔特）

功能描述

The LTC1923 is a pulse width modulator intended for thermoelectric cooler (TEC) or heater applications requiring either unidirectional or bidirectional drive circuits. All of the necessary control circuitry and two sets of complementary output drivers are integrated into the LTC1923 to drive a full bridge, providing an efficient means of bidirectional current flow to the TEC. An accurate temperature control loop to stabilize the temperature of a laser diode system is easily achieved with the addition of just a few external components. Typical temperature setpoint accuracy of 0.1°C is achievable with the LTC1923. Adding an instrumentation amplifier front end allows setpoint stability of 0.01°C.

The part features independent adjustable heating and cooling pulse-by-pulse current limit, current soft-start for controlled start-up, output slew rate control to reduce system noise, differential current sense and voltage amplifiers and a host of auxiliary circuits to protect the laser and provide redundant system monitoring.

特点
  • High Efficiency, Low Noise Topology
  • Adjustable Output Slew Rate Reduces EMI
  • Full-Bridge Controller for Bidirectional Current Control
  • Adjustable Pulse-by-Pulse Bidirectional TEC Current Limit
  • Open/Shorted Thermistor Indication
  • Solution Footprint in Less Than0.6 inches x 0.8 inches(Double-Sided PCB)
  • Available in 5mm x 5mm QFN and 28-Pin SSOP Packages
  • TEC Voltage Clamping
  • TEC Current, Voltage and Heat/Cool Status Outputs
  • Adjustable/Synchronizable Oscillator Frequency Reduces Filter Component Size and System Noise
  • 2.5V Reference Voltage Output
  • 2.7V Minimum Operating Voltage
    • 应用
  • Laser-Based Fiber Optic Links
  • Medical Instruments
  • CPU Temperature Regulators
    • 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)
    LTC1923EGN SSOP-28 E $21.52 $18.17
    LTC1923EGN#PBF SSOP-28 E $21.52 $18.17
    LTC1923EGN#TR SSOP-28 E $18.27
    LTC1923EGN#TRPBF SSOP-28 E $18.27
    LTC1923EUH 5x5 QFN-32 E $28.07 $18.47
    LTC1923EUH#PBF 5x5 QFN-32 E $28.07 $18.47
    LTC1923EUH#TR 5x5 QFN-32 E $18.57
    LTC1923EUH#TRPBF 5x5 QFN-32 E $18.57
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