The MAX6513 is a fully integrated, remote temperature switch that uses an external P-N junction (typically a diode-connected transistor) as the sensing element to measure the remote temperature. When the temperature crosses a factory-programmed threshold, the device asserts a logic signal. Available trip thresholds are from +45°C to +125°C in 10°C increments. Accuracy is within ±3°C (TA = -5°C to +55°C) or ±5°C (TA = -40°C to +85°C). Hysteresis is pin selectable to 5°C or 10°C. The MAX6513 has an active-high CMOS output. The output is asserted when the temperature exceeds the threshold value. The active-high CMOS output can directly drive a power FET to control a cooling fan. The MAX6513 operates from a +3.0V to +5.5V supply and typically consumes 400µA of supply current. It is available in a 6-pin lead-free TDFN package.
The MAX6513 remote temperature switch uses an external P‑N junction as the sensing element and provides a logic‑level output that asserts when the measured temperature exceeds a factory‑programmed threshold. It features pin‑selectable hysteresis (5 °C or 10 °C), a typical supply current of 400 µA, and is supplied in a 6‑pin lead‑free TDFN package.
Typical applications include CPU temperature monitoring, fan control, and battery‑pack temperature alarms. The device includes pins for power (VDD), ground, hysteresis selection (HYST), output (TOVER), and the external diode connections (DXP, DXN). Detailed pin descriptions, electrical characteristics, and package information are provided in the document.
| Supply Voltage Range | 3.0 V to 5.5 V |
|---|---|
| Supply Current (typical) | 400 µA |
| Temperature Threshold Range | +45 °C to +125 °C |
| Hysteresis Selection | 5 °C or 10 °C (pin selectable) |
| Output Type | Active‑high CMOS |
It operates from a +3.0 V to +5.5 V supply.
Connect the HYST pin to VDD for 10 °C hysteresis or to GND for 5 °C hysteresis.
The typical supply current is about 400 µA.
Factory‑programmed thresholds range from +45 °C to +125 °C in 10 °C increments.