The MAX6652 is a power supply supervisor from Texas Instruments that can monitor multiple power supply voltages, and also features an on-board temperature sensor.
The MAX6652 is a system supervisor that monitors up to four supply voltages (2.5 V, 3.3 V, 12 V, Vcc) and an on‑board temperature sensor. Measurements are converted to an 8‑bit code via an ADC and stored in registers that can be read over a 2‑wire I²C/SMBus interface. When a voltage or temperature exceeds programmed thresholds, the device asserts an open‑drain ALERT output.
The device operates from +2.7 V to +5.5 V, supports both 50 Hz and 60 Hz line‑frequency rejection, and is supplied in a tiny 10‑pin pMAX package. Configuration registers allow selection of address pins, interrupt modes, and conversion cycle speed, making the MAX6652 suitable for supervisory and thermal‑management applications in telecommunications, computers, and workstations.
| Supply voltage range | 2.7 V to 5.5 V |
|---|---|
| Operating temperature range | -40 °C to +125 °C |
| Package | 10‑Pin pMAX |
| Monitored voltages | 2.5 V, 3.3 V, 12 V, Vcc |
| Temperature accuracy | ±2 °C at 25 °C |
| Line‑frequency rejection | 50 Hz / 60 Hz |
| ADC resolution | 8‑bit |
| Monitoring cycle time | 200 ms – 300 ms |
| ALERT output type | Open‑drain |
| Address selection | ADD pin to GND, Vcc, SDA, or SCL |
| Shutdown supply current | ≤10 µA |
The device operates from 2.7 V up to 5.5 V.
It can monitor four voltages: 2.5 V, 3.3 V, 12 V, and its own Vcc.
The temperature accuracy is ±2 °C at a reference temperature of 25 °C.
The address is determined by the state of the ADD pin, which can be tied to GND, Vcc, SDA, or SCL to select one of four possible addresses.