Overview
The LTM4663EV#PBF from Analog Devices is a complete 1.5A µModule Thermoelectric Cooler (TEC) regulator. This ultrathin module is packaged in a 3.5mm × 4mm × 1.3mm LGA package, making it highly compact and suitable for space-constrained applications. The LTM4663 includes a TEC controller, linear power stage, switching regulator, inductor, and all necessary support components, requiring only external input and output capacitors for operation. It operates over an input voltage range of 2.7V to 5.5V and can deliver up to 1.5A of continuous sink or source current. The device supports NTC, PTC thermistors, and resistive temperature detectors (RTD) and features a closed-loop temperature control system using external thermal sensors.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 2.7V to 5.5V |
| Maximum Output Current | 1.5A |
| Operating Temperature Range | -40°C to 125°C |
| PWM Frequency (max) | 2 MHz |
| Shutdown | Yes |
| Package Type | 25-Lead LGA (4mm × 3.5mm × 1.3mm) |
| RoHS Compliance | Yes |
| Reference Voltage (VREF) | 2.475V to 2.525V |
| Maximum TEC Differential Voltage | No load, 93% efficiency |
| SFB Bias Current (ISFB) | 1 µA |
| Soft-Start Time (tSS) | 150 ms |
| Shutdown Voltage Threshold (VLIM/SD) | 0.07 V |
Key Features
- Compact 3.5mm × 4mm × 1.3mm LGA package
- Includes TEC controller, linear power stage, switching regulator, and inductor
- Supports NTC, PTC thermistors, and resistive temperature detectors (RTD)
- Closed-loop temperature control using external thermal sensors
- Programmable maximum cooling and heating currents and maximum TEC voltage
- Zero drift, rail-to-rail chopper amplifiers for thermistor input and temperature feedback control
- Enable and shutdown functionality with ultralow current state
- Cable drop compensation and filtering capabilities for output ripples and dynamic transient spikes
Applications
The LTM4663EV#PBF is suitable for various applications requiring precise temperature control, such as:
- Laser diodes and optical components
- Medical devices and diagnostic equipment
- Aerospace and defense systems
- Industrial automation and process control
- High-reliability consumer electronics
Q & A
- What is the input voltage range of the LTM4663EV#PBF?
The input voltage range is 2.7V to 5.5V. - What is the maximum output current of the LTM4663EV#PBF?
The maximum output current is 1.5A. - What types of thermistors does the LTM4663EV#PBF support?
The device supports NTC, PTC thermistors, and resistive temperature detectors (RTD). - How does the LTM4663EV#PBF control temperature?
The device uses a closed-loop temperature control system with external thermal sensors. - What is the package type and size of the LTM4663EV#PBF?
The package type is a 25-Lead LGA, measuring 4mm × 3.5mm × 1.3mm. - Is the LTM4663EV#PBF RoHS compliant?
Yes, the device is RoHS compliant. - How do you enable and shut down the LTM4663EV#PBF?
The device is enabled by applying a logic high voltage to the EN/SY pin and shut down by setting the EN/SY pin to logic low or the VLIM/SD voltage below 0.07V. - What is the soft-start time of the LTM4663EV#PBF?
The soft-start time is 150 ms. - Can the LTM4663EV#PBF be used in high-temperature environments?
Yes, the operating temperature range is -40°C to 125°C. - What additional components are required for the LTM4663EV#PBF to operate?
Only external input and output capacitors are needed.
