LM75
PRODUCTIONDigital Temperature Sensor and Thermal Watchdog with 2-Wire Interface
Industry-Standard Multi-Sourced Digital Temperature Sensor
- Part Models
- 8
- 1ku List Price
- Starting From $1.13
Overview
- ISO (SOP) and µMAX® (µSOP) Packages
- I²C Bus Interface
- Separate Open-Drain OS Output Operates as Interrupt or Comparator/Thermostat Input
- Register Readback Capability
- Power-Up Defaults Permit Stand-Alone Operation as a Thermostat
- 3.0V to 5.5V Supply Voltage
- Low Operating Supply Current 250µA (typ), 1mA (max)
- 4µA (typ) Shutdown Mode Minimizes Power Consumption
- Up to Eight LM75s Can Be Connected to a Single Bus
- Pin- and/or Register-Compatible with Improved-Performance Maxim Sensors Including MAX7500, MAX6625, MAX6626, DS75LV, and DS7505
The LM75 temperature sensor includes a delta-sigma analog-to-digital converter, and a digital overtemperature detector. The host can query the LM75 through its I²C interface to read temperature at any time. The open-drain overtemperature output (OS) sinks current when the programmable temperature limit is exceeded. The OS output operates in either of two modes, comparator or interrupt. The host controls the temperature at which the alarm is asserted (TOS) and the hysteresis temperature below which the alarm condition is not valid (THYST). Also, the LM75's TOS and THYST registers can be read by the host. The address of the LM75 is set with three pins to allow multiple devices to work on the same bus. Power-up is in comparator mode, with defaults of TOS = +80°C and THYST = +75°C. The 3.0V to 5.5V supply voltage range, low supply current, and I²C interface make the LM75 ideal for many applications in thermal management and protection.
Applications
- Computers and Office Electronics
- Test Equipment
- Thermal Protection
- Thermal System Management
Documentation
Data Sheet 1
Reliability Data 1
Technical Articles 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LM75BIM-3+ | Small-Outline IC, Narrow (0.15in) | ||
| LM75BIM-5+ | Small-Outline IC, Narrow (0.15in) | ||
| LM75BIMM-3+ | Micro-MAX, Thin Shrink Small-Outline | ||
| LM75BIMM-5+ | Micro-MAX, Thin Shrink Small-Outline | ||
| LM75BIMMX-3+ | Micro-MAX, Thin Shrink Small-Outline | ||
| LM75BIMMX-5+ | Micro-MAX, Thin Shrink Small-Outline | ||
| LM75BIMX-3+ | Small-Outline IC, Narrow (0.15in) | ||
| LM75BIMX-5+ | Small-Outline IC, Narrow (0.15in) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
May 22, 2018 - 1702N ASSEMBLY |
||
| LM75BIM-3+ | PRODUCTION | |
|
Oct 30, 2020 - 1702R2 ASSEMBLY |
||
| LM75BIM-5+ | PRODUCTION | |
| LM75BIMX-5+ | PRODUCTION | |
|
Sep 19, 2018 - 1753N ASSEMBLY |
||
| LM75BIMM-5+ | PRODUCTION | |
|
May 1, 2020 - 1702R ASSEMBLY |
||
| LM75BIMX-3+ | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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| Parts | Product Life Cycle | Description |
|---|---|---|
| Analog to Digital Converters (ADCs) 4 | ||
| MAX6625 | PRODUCTION | 9-Bit/12-Bit Temperature Sensors with I²C-Compatible Serial Interface in a SOT23 |
| DS7505 | PRODUCTION | High-Precision Digital Thermometer and Thermostat |
| DS75 | PRODUCTION | Digital Thermometer and Thermostat |
| MAX7500 | PRODUCTION | Digital Temperature Sensors and Thermal Watchdog with Bus Lockup Protection |