The MAX6509/MAX6510 are fully integrated, resistor-programmable temperature switches with thresholds set by an external resistor. They require only one external resistor to set the temperature threshold within a wide -40°C to +125°C temperature range. The MAX6509 provides an open-drain output. The MAX6510 features three selectable output options: active-low, active-high, and open drain with an internal pull-up resistor. These switches operate with a +2.7V to +5.5V single supply while providing a temperature threshold accuracy of ±0.5°C (typ) or ±4.7°C (max). They typically consume 32µA supply current. Hysteresis is pin selectable to 2°C or 10°C. The MAX6509/MAX6510 are available in 5-pin and 6-pin SOT23 packages, respectively.
The MAX6509 and MAX6510 are fully integrated temperature switches that set thresholds with a single external resistor. They operate from a 2.7 V to 5.5 V supply and provide ±0.5 °C typical threshold accuracy across a –40 °C to +125 °C range. The MAX6509 offers an open‑drain output, while the MAX6510 provides active‑low, active‑high, or open‑drain with internal pull‑up.
The devices are available in 5‑pin (SOT‑23‑5) and 6‑pin (SOT‑23‑6) packages, consume about 32 µA supply current, and feature pin‑selectable hysteresis of 2 °C or 10 °C. Applications include microprocessor temperature monitoring, fan control, and automotive temperature alarms.
| Supply Voltage Range | 2.7 V to 5.5 V |
|---|---|
| Hysteresis Options | 2 °C or 10 °C (pin‑selectable) |
| Package Types | SOT‑23‑5 (MAX6509) / SOT‑23‑6 (MAX6510) |
| MAX6509 Output Type | Open‑drain |
| MAX6510 Output Options | Active‑low, active‑high, or open‑drain with internal pull‑up |
They operate from 2.7 V to 5.5 V.
By connecting a 1 % external resistor between the SET pin and GND.
The HYST pin selects either 2 °C (HYST = GND) or 10 °C (HYST = VCC).
It can be configured for active‑low, active‑high, or open‑drain with an internal pull‑up resistor.