厂商：Freescale
类别：16位单片机
厂商：Panasonic
类别：信号继电器
厂商：
类别：PhotoMOS(MOSFET输出光电耦合器)
厂商：Linear
类别：高速比较器
厂商：SGmicro
类别：单通道LDO
类别：LED驱动器
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特点High Efficiency, Low Noise TopologyAdjustable Output Slew Rate Reduces EMIFull-Bridge Controller for Bidirectional Current ControlAdjustable Pulse-by-Pulse Bidirectional TEC Current LimitOpen/Shorted Thermistor Indication Solution Footprint in Less Than 0.6 inches x 0.8 inches (Double-Sided PCB) Available in 5mm x 5mm QFN and 28-Pin SSOP PackagesTEC Voltage ClampingTEC Current, Voltage and Heat/Cool Status OutputsAdjustable/Synchronizable Oscillator Frequency Reduces Filter Component Size and System Noise2.5V Reference Voltage Output2.7V Minimum Operating Voltage典型应用描述The LTC?1923 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.