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LM75BDP,118

LM75BDP,118

NXP Semiconductors
Board Mount Temperature Sensors I2C LOCAL +/- 20C TS DIGITAL TEMP SENSOR
48,683 in stock
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Overview

The LM75BDP is a digital temperature-to-digital converter featuring an 11-bit ADC and an I2C bus interface. It operates over a wide voltage range of 2.8V to 5.5V and provides a dedicated overtemperature shutdown output (OS) for hardware-level thermal management. The device functions as a standalone thermostat at power-up, making it ideal for protecting sensitive electronics before firmware initialization.

Why Choose This Part

The LM75BDP offers high ESD protection exceeding 4500V HBM and a very low shutdown current of only 1uA. Its 11-bit resolution provides finer granularity than standard 9-bit LM75 variants, while the TSSOP8 package allows for dense PCB placement.

Applications

System Thermal Management
Monitoring ambient temperature in servers, networking equipment, and industrial computers to trigger cooling fans or system throttling.
Environmental Monitoring
Used in climate control systems and IoT gateways to track local board temperature with 0.125 degree Celsius resolution.
Overtemperature Protection
Acting as a hardware watchdog that shuts down power supplies or alerts a micro-controller when thermal limits are exceeded.

Key Specifications

Features Output Switch, Programmable Limit
Resolution 11 b
Output Type I2C
Sensor Type Digital, Local
Mounting Type Surface Mount
Package / Case 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Test Condition -25degC ~ 100degC (-55degC ~ 125degC)
Voltage - Supply 2.8V ~ 5.5V
Operating Temperature -55degC ~ 125degC
Supplier Device Package 8-TSSOP
Accuracy - Highest (Lowest) +/-2degC (+/-3degC)
Sensing Temperature - Local -55degC ~ 125degC

Getting Started

Connect the SCL and SDA lines to an I2C master with appropriate pull-up resistors and configure the three address pins to set the device slave address. Use the OS output to drive an interrupt pin or a power-down circuit for immediate thermal response. Libraries for the standard LM75 protocol are widely available for Arduino, ESP32, and STM32 platforms.

Also Consider

MCP9808 MCHPMicrochip Technology - Features a higher 12-bit resolution and improved accuracy of +/-0.25 degC typical.

Categories

Sensors > Temperature Sensors