The MAX6640 is a 5mm x 5mm QFN package temperature sensor, supports over temperature alarm and current detection functions, supports PWM output
The MAX6640 is a temperature‑monitoring IC that provides two PWM fan‑control outputs and an SMBus interface for temperature read‑back. It operates from a 3.0 V to 3.6 V supply and can measure temperatures from –40 °C up to +150 °C.
The device includes programmable thresholds for over‑temperature (OT), thermistor (THERM) and fan‑fail (FANFAIL) alerts, and offers a 0.125 °C resolution. Package options are 16‑pin QSOP and 5 mm × 5 mm TQFN.
| Operating Temperature Range | -40 °C to +125 °C |
|---|---|
| Number of PWM Outputs | 2 (PWM1, PWM2) |
It provides two PWM outputs, labeled PWM1 and PWM2.