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LM50QIM3X/NOPB

TILM50QIM3X/NOPB

Texas Instruments
Temperature Sensor Analog, Local -40°C ~ 125°C 10mV/°C SOT-23-3
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Overview

The LM50QIM3X/NOPB is a precision analog output temperature sensor designed for automotive and industrial applications. It operates over a -40C to +125C range with a linear output scale of 10mV/C and a 500mV offset at 0C, allowing it to measure negative temperatures without a dual supply. This AEC-Q100 qualified device is housed in a compact 3-pin SOT-23 package and supports a wide supply voltage range from 4.5V to 10V.

Why Choose This Part

The sensor features a low 2k ohm typical output impedance, which enables it to drive large capacitive loads without stability issues. It simplifies system design by providing a 500mV offset, allowing the sensing of sub-zero temperatures using a single positive supply rail. Its AEC-Q100 Grade 1 qualification and functional safety-capable status make it a robust choice for mission-critical automotive environments.

Applications

Automotive Power Electronics
Temperature monitoring in engine control units and battery management systems where AEC-Q100 qualification is required.
Industrial System Monitoring
Thermal management in power supplies and motor controllers that operate on high-voltage rails up to 10V.
HVAC Control Systems
Reliable linear sensing for environmental control modules requiring an analog voltage interface to a microcontroller ADC.

Key Specifications

Resolution 10mV/degC
Output Type Analog Voltage
Sensor Type Analog, Local
Mounting Type Surface Mount
Package / Case TO-236-3, SC-59, SOT-23-3
Test Condition 25degC (-40degC ~ 125degC)
Voltage - Supply 4.5V ~ 10V
Operating Temperature -40degC ~ 150degC
Supplier Device Package SOT-23-3
Accuracy - Highest (Lowest) +/-3degC (+/-4degC)
Sensing Temperature - Local -40degC ~ 125degC

Getting Started

To integrate this sensor, connect the VDD pin to a stable 4.5V to 10V source and the GND pin to system ground. The VOUT pin provides a linear 10mV/C signal that can be directly sampled by a microcontroller ADC; ensure the ADC reference matches the system scaling for accurate conversion. For rapid prototyping, use a SOT-23 to DIP breakout board on a standard breadboard.