The MAX1978/MAX1979 are the smallest, safest, most accurate complete single-chip temperature controllers for Peltier thermoelectric cooler (TEC) modules.
The MAX1978 and MAX1979 are single‑chip temperature controllers designed for Peltier thermoelectric cooler (TEC) modules. They integrate on‑chip MOSFETs, a chopper‑stabilized instrumentation amplifier, and precision reference circuitry to provide accurate temperature regulation with low noise and high efficiency.
Both devices are offered in a 48‑lead thin QFN‑EP package and support selectable switching frequencies, temperature stability of ±0.001 °C, and built‑in over‑/under‑temperature alarms. The MAX1978 provides bipolar ±3 A output, while the MAX1979 offers unipolar up to +6 A.
| Supply Voltage Range | 3.0 V – 5.5 V |
|---|---|
| Bipolar Output Current (MAX1978) | +3 A |
| Unipolar Output Current (MAX1979) | +6 A |
| Package Type | 48‑lead Thin QFN‑EP |
| Switching Frequency | 450 kHz – 650 kHz |
The devices operate from a supply voltage of 3.0 V to 5.5 V.
The MAX1978 provides a bipolar output current of up to +3 A.
Both devices are offered in a 48‑lead thin QFN‑EP package.