DESCRIPTION

· The LM75B is a temperature-to-digital converter utilizing an on-chip band gap temperature sensor and Sigma-Delta A-to-D conversion technique.

· It includes an overtemperature detection output and multiple data registers for configuration, temperature reading, and set-point limits.

· The device communicates via a 2-wire serial I2C-bus interface and supports up to eight devices on the same bus using selectable logic address pins.

· It features an open-drain output (OS) that activates when temperature exceeds programmed limits, with configurable operation modes and polarity.

· The temperature register stores 11-bit two’s complement data with a resolution of 0.125°C, ensuring precise thermal measurements.

· The LM75B operates in normal or shutdown mode, with default settings suitable for standalone thermostat applications.

FEATURES

· Pin-for-pin compatible with LM75 and LM75A, offering enhanced temperature resolution of 0.125°C.

· Wide power supply range from 2.8 V to 5.5 V, suitable for various applications.

· Supports I2C-bus interface, allowing up to eight devices on the same bus without address conflicts.

· Temperature measurement range from -55°C to +125°C, ideal for diverse environments.

· Programmable OS output modes (comparator or interrupt) and fault queue for flexible overtemperature detection.

· Independent I2C-bus and Sigma-Delta converter sections ensure uninterrupted temperature conversion during communication.

APPLICATIONS

· Precise thermal monitoring and control in industrial and consumer electronics.

· Thermal drift and runaway measurement in high-accuracy applications.

· Standalone thermostat functionality with pre-defined temperature thresholds.

· Power-efficient temperature sensing in battery-operated devices.

· Multi-device temperature monitoring systems using I2C-bus communication.