Description

The TC190C120AF-002 is an electronic component model in the IC Chips product category. It is a pulse width modulator designed for thermoelectric cooler (TEC) or heater applications that require either unidirectional or bidirectional drive circuits. The LTC1923 integrates all the necessary control circuitry and two sets of complementary output drivers, providing an efficient means of bidirectional current flow to the TEC. It allows for an accurate temperature control loop to stabilize the temperature of a laser diode system with the addition of a few external components. The LTC1923 offers a typical temperature setpoint accuracy of 0.1°C, which can be further improved to 0.01°C by adding an instrumentation amplifier front end.

Specifications and features

• 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 Than 0.6" × 0.8" (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

Application Scenarios

• Laser-Based Fiber Optic Links
• Medical Instruments
• CPU Temperature Regulators

Comparison