MCP9701T-E/LT

The MCP9701T-E/LT is Microchip’s low-cost, analog temperature sensor with a linear voltage output proportional to ambient temperature. It operates from a single 2.7–5.5 V supply and draws minimal current, making it suitable for battery-powered devices. The output follows about 0.5 V at 0°C with a slope of ~10 mV/°C, so T(°C) ≈ (Vout − 0.5 V)/0.01 V/°C. Its operating range is −40°C to +125°C. The “T” suffix indicates Tape & Reel packaging and RoHS-compliant lead-free variants (E/LT). No external calibration is required; read Vout with an MCU ADC and convert to °C. Note that Vout is ratiometric to Vdd, so use a stable supply or measure Vdd to improve accuracy. Ideal for simple temperature sensing, thermal protection, HVAC, and other electronics where a single-supply, analog Temp sensor is preferred.

MCP9701T-E/LT features (concise):
- Analog temperature sensor with linear output (approximately 10 mV/°C slope).
- 3-pin, voltage-output sensor (Vdd, Vout, GND); ratiometric to supply.
- Supply voltage range: 2.3 V to 5.5 V.
- Operating temperature range: -40°C to +125°C.
- Factory-calibrated; no external calibration needed.
- Low power consumption (low quiescent current; suitable for battery-powered apps).
- Small package options with lead-free (RoHS) options; available in tape-and-reel (LT) packaging.
- Suitable for direct interfacing with ADCs; stable and linear response.

- Pin count: 3 pins
- Function: Analog temperature sensor (MCP9701). Pins are Vdd, GND, and Vout; Vout is proportional to ambient temperature (linear output).

- Manufacturer: Microchip Technology Incorporated (Microchip Technology)
- What kind of company: An American multinational semiconductor company that designs, manufactures, and sells microcontrollers, analog and mixed-signal ICs, memory, and other embedded control solutions (an integrated device manufacturer with global operations).

Typical application areas for MCP9701T-E/LT:
- Battery packs and portable devices for thermal management and protection.
- Power supplies, DC-DC converters, and motor drivers needing temp monitoring.
- Consumer electronics and computing boards for on-board temperature feedback.
- Automotive electronics (ECUs, battery management, climate control) requiring compact temp sensing.
- Industrial and IoT sensors (data loggers, PLCs, remote sensing) with inexpensive analog temp input.
- HVAC and environmental sensing (thermostats, smart sensors, kiosks).
- Data logging and medical equipment that use a simple, low-cost temperature sensor.

TO-92 3-pin plastic through-hole package.