XC3101 series temperature sensor IC is ultra small, low power consumption, high accuracy, internal over temperature alarm function, can provide analog and alarm output. Analog output high precision, in the range of -40℃～+100℃ accuracy of ±0.25℃. Alarm output is N-channel open-drain output, can be configured through external circuit alarm threshold and hysteresis width.
The XC3101 Series is a temperature‑sensor IC that provides both an analog voltage proportional to temperature and an N‑channel open‑drain alarm output. It operates from 2.7 V to 5.5 V and consumes only 3.5 µA typical at 25 °C, making it suitable for battery‑powered devices. The sensor is offered in ultra‑small USPN‑4 (1.2 × 0.9 × 0.4 mm) and SSOT‑24 packages.
Key specifications include an analog output of 1.600 V at 25 °C, a temperature coefficient of –11.77 mV/°C, an alarm threshold of 70 °C ± 4.5 °C with a 5 °C hysteresis, and operation over –40 °C to 100 °C. The datasheet also provides pin assignments, absolute maximum ratings, typical performance curves, and recommended external capacitors for stability.
| Operating Voltage Range | 2.7 V – 5.5 V |
|---|---|
| Analog Output Voltage (typical @25 °C) | 1.600 V |
| Alarm Temperature | 70 °C ± 4.5 °C |
| Alarm Hysteresis | 5 °C (typical) |
| Supply Current (typical @25 °C) | 3.5 µA |
| Package Options | USPN‑4, SSOT‑24 |
The alarm temperature is set to 70 °C ± 4.5 °C.
The sensor draws about 3.5 µA typical at 25 °C.
It is offered in USPN‑4 and SSOT‑24 surface‑mount packages.