Description

The SI7446DP-T1-E3 is a model of electronic component belonging to the IC Chips product category. It is a monolithic controller designed to stabilize the temperature of a laser diode or a passive component used in telecommunications equipment. The temperature is regulated using a negative temperature coefficient (NTC) thermistor to sense the temperature of the attached object. The desired temperature can be set using an analog input voltage from a DAC or an external resistor divider. The device utilizes a PID compensation amplifier with high stability and low noise to maintain temperature stability. The compensation network can be adjusted by the user for optimizing temperature settling time. Voltage outputs are provided for monitoring the temperature and the voltage across the thermoelectric cooler (TEC). The device also features a voltage reference of 2.5 V.

Specifications and features

• High Efficiency
• Small Size: 5 mm x 5 mm LFCSP
• Low Noise: <0.5% TEC Current Ripple
• Long-Term Temperature Stability: 0.01°C
• Temperature Lock Indication
• Temperature Monitoring Output
• Oscillator Synchronization with an External Signal
• Clock Phase Adjustment for Multiple Controllers
• Programmable Switching Frequency up to 1 MHz
• Thermistor Failure Alarm
• Maximum TEC Voltage Programmability

Application Scenarios

• Thermoelectric Cooler (TEC) Temperature Control
• Resistive Heating Element Control
• Temperature Stabilization Substrate (TSS) Control

Comparison