Product Overview
The LM75A/B/C is an industrial-standard digital temperature sensor and thermal monitor designed for general system thermal management. It offers accurate temperature measurement with an error of less than 1C across its operating range of -40C to +125C. Featuring an IC serial interface, it allows up to eight devices to be connected on a single bus. The sensor includes an over-temperature alarm function with programmable high and low temperature limits, enabling its use as a thermostat or over-temperature alert. With factory calibration, no additional user processing of temperature output is required, making it ideal for applications such as base stations, electronic test equipment, office electronics, and personal computers where thermal management is critical.
Product Attributes
- Brand: LM75A/B/C
- Interface: IC
- Package Options: SOIC-8, MSOP-8
Technical Specifications
| Specification | Value | Unit | Conditions |
|---|---|---|---|
| Supply Voltage (LM75) | 2.7 to 5.5 | V | |
| Supply Voltage (V+) | 1.4 to 5.5 | V | |
| Operating Temperature Range | -40 to 125 | C | |
| Temperature Accuracy (Error) | 0.5 to 1 | C | -40C to +125C |
| Temperature Resolution | 0.0625 | C | 12 Bits |
| One-Shot Conversion Time | 26 to 35 | ms | |
| Continuous Conversion Rate | 12 | Conv/s | |
| Bus Timeout | 22 to 40 | ms | |
| Bus Communication Frequency (Fast Mode) | 0.001 to 0.4 | MHz | |
| Bus Communication Frequency (High-Speed Mode) | 0.001 to 2.75 | MHz | |
| Average Quiescent Current (Bus Idle) | 15 to 37 | A | |
| Shutdown Current (Bus Idle) | < 0.5 | A | Typical |
| ESD Voltage (Human Body Mode) | 5000 | V | per ANSI/ESDA/JEDEC JS-001 |
| ESD Voltage (Machine Mode) | 300 | V | per JEDEC-STD Classification |
| Pin Function: SDA | Serial Data Pin (Open-drain output, requires pull-up resistor) | ||
| Pin Function: SCL | Serial Clock Pin (Open-drain output, requires pull-up resistor) | ||
| Pin Function: ALERT | Over-temperature Alarm Pin (Open-drain output, requires pull-up resistor) | ||
| Pin Function: GND | Ground Pin | ||
| Pin Function: A2, A1, A0 | Address Selection Pins (Connect to V+ or GND) | ||
| Pin Function: V+ | Power Supply Voltage Pin | ||
2411111138_Tudi-LM75CIMX-3-TUDI_C41417244.pdf
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