LM75B ±2°C Industry Standard Temperature Sensor with I2C/SMBus Interface | TI.com

LM75B (ACTIVE)

±2°C Industry Standard Temperature Sensor with I2C/SMBus Interface

 

Recommended alternative parts

  • TMP1075  -  This has SIMILAR FUNCTIONALITY but with up to 20x lower power.

Description

The LM75B and LM75C are industry-standard digital temperature sensors with an integrated Sigma-Delta analog-to-digital converter and I2C interface. The LM75 provides 9-bit digital temperature readings with an accuracy of ±2°C from -25°C to 100°C and ±3°C over –55°C to 125°C.

Communication is accomplished over a 2-wire interface which operates up to 400kHz. The LM75 has three address pins, allowing up to eight LM75 devices to operate on the same 2-wire bus. The LM75 has a dedicated over-temperature output (O.S.) with programmable limit and hystersis. This output has programmable fault tolerance, which allows the user to define the number of consecutive error conditions that must occur before O.S. is activated.

The wide temperature and supply range and I2C interface make the LM75 ideal for a number of applications including base stations, electronic test equipment, office electronics, personal computers, and any other system where thermal management is critical to performance. The LM75B and LM75C are available in an SOIC package or VSSOP package.

Features

  • No External Components Required
  • Shutdown Mode to Minimize Power Consumption
  • Up to Eight LM75s Can be Connected to a Single Bus
  • Power Up Defaults Permit Stand-alone Operation as Thermostat
  • UL Recognized Component (LM75B and LM75C)
  • Key Specifications:
    • Supply Voltage
      • LM75B, LM75C: 3 V to 5.5 V
    • Supply Current
      • Operating: 280 μA (typical)
      • Shutdown: 4 μA (typical)
    • Temperature Accuracy
      • −25°C to 100°C: ±2°C (maximum)
      • −55°C to 125°C: ±3°C (maximum)

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Parametrics Compare all products in Digital temperature sensors

 
Device Type
Interface
Local Sensor Accuracy (Max) (+/- C)
Temp Resolution (Max) (bits)
Operating Temperature Range (C)
Supply Voltage (Min) (V)
Supply Voltage (Max) (V)
Supply Current (Max) (uA)
Features
Remote Channels (#)
Addresses
Rating
Package Group
Package Size: mm2:W x L (PKG)
LM75B LM75A TMP102
Local     Local     Local    
I2C, SMBus, 2-Wire     I2C, SMBus, 2-Wire     I2C, SMBus, 2-Wire    
2     2     2    
9     9     12    
-55 to 125     -55 to 125     -40 to 125    
3     2.7     1.4    
5.5     5.5     3.6    
500     500     10    
Fault Queue
UL Recognized    
Programmable Alert
Fault Queue
UL Recognized    
Programmable Alert
Fault Queue
One-Shot Conversion
Shutdown    
0     0     0    
8     8     4    
Catalog     Catalog     Catalog    
SOIC | 8
VSSOP | 8    
SOIC | 8
VSSOP | 8    
SOT-5X3 | 6    
8SOIC: 29 mm2: 6 x 4.9 (SOIC | 8)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
8SOIC: 29 mm2: 6 x 4.9 (SOIC | 8)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
6SOT-5X3: 3 mm2: 1.6 x 1.6 (SOT-5X3 | 6)