SGM41298 Overview
The SGM41298 is a monolithic thermoelectric cooling (TEC) thermostat driver device with two-stage feedback amplifier. The device includes a differential driver (output) stage, an internal 2.5V output reference voltage and two zero-drift, rail-to-rail chopper amplifiers. The first chopper amplifier biases the sensed temperature signal and another is an error amplifier for pensating the closed loop temperature control.
SGM41298 Key Features
- High Efficiency Single Inductor Architecture
- Single-ended to Differential Driver with Low RDSON
- TEC Voltage and Current Monitoring
- No External Sense Resistor Required
- Independent Heating and Cooling Current/Voltage
- PWM Driver Switching Frequency: 2.0MHz (TYP)
- Two Rail-to-Rail, Zero-Drift Chopper Amplifiers
- patible with RTD or NTC Thermal Sensors
- 2.5V Output Reference Voltage
- Patent Pending