Features and Benefits

  • Built-in Two Zero-Drift, Rail-to-Rail Chopper Amplifiers
  • 2.7V to 5.5V Input Voltage Range
  • 1.5A Driving Capability
  • 1% Accuracy 2.5V Internal Reference Output
  • Independent Programmable Heating and Cooling Current Limit
  • TEC Voltage and Current Monitoring
  • Programmable Maximum TEC Voltage
  • Default 2MHz Switching Frequency
  • Synchronization from 1.85MHz to 3.25MHz
  • Capable of NTC, PTC and RTD Thermal Sensors
  • 3.5mm × 4mm × 1.3mm LGA Package

Product Details

The LTM4663 is a complete 1.5A µModule® Thermoelectric Cooler (TEC) regulator in a tiny 3.5mm × 4mm × 1.3mm LGA package. Included in the package are the TEC controller, linear power stage, switching regulator, inductor and all support components.

Operating over an input voltage range of 2.7V to 5.5V, the LTM4663 supports a 1.5A continuous sink or source current capability. Only input and output capacitors are needed. The LTM4663 has two zero drift, rail-to-rail chopper amplifiers to serve as the thermistor input amplifier and the temperature feedback control loop.

The LTM4663 supports NTC, PTC thermistors and resistive temperature detectors (RTD). The maximum cooling and heating currents can be programmed independently as well as the maximum TEC voltage.

The LTM4663 is available in LGA RoHS compliant terminal finish.


  • TEC Temperature Control
  • Optical Networking System, Optical Module
  • LiDAR System

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (1)

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Evaluation Boards

Pricing displayed is based on 1-piece.

Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.