±2°C Industry Standard Temperature Sensor with I2C/SMBus Interface - LM75B

LM75B (ACTIVE)

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

 

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 Local Digital Temperature Sensors

 
Interface
Local Sensor Accuracy (Max) (+/- C)
Temp Resolution (Max) (bits)
Operating Temperature Range (C)
Supply Voltage (Min) (V)
Supply Voltage (Max) (V)
Supply Current (Typ) (uA)
Supply Current (Max) (uA)
Features
Addresses
Rating
Package Group
Package Size: mm2:W x L (PKG)
Iq (Typ) (uA)
LM75B LM75A TMP102 TMP75
I2C, SMBus, 2-Wire    I2C, SMBus, 2-Wire    I2C, SMBus, 2-Wire    I2C, SMBus, 2-Wire   
2    2    2    1.5   
9    9    12    12   
-55 to 125    -55 to 125    -40 to 125    -40 to 125   
3    2.7    1.4    2.7   
5.5    5.5    3.6    5.5   
250    280    10    50   
500    500    10    85   
Fault Queue    Programmable Alert
Fault Queue   
Programmable Alert
Fault Queue
One-Shot Conversion
Shutdown   
Configurable Resolution
Programmable Alert
Fault Queue
One-Shot Conversion
Shutdown   
8    8    4    8   
Catalog    Catalog    Catalog    Catalog   
SOIC
VSSOP   
SOIC
VSSOP   
SOT-5X3    SOIC
VSSOP   
8SOIC: 29 mm2: 6 x 4.9(SOIC)
8VSSOP: 15 mm2: 4.9 x 3(VSSOP)   
8SOIC: 29 mm2: 6 x 4.9(SOIC)
8VSSOP: 15 mm2: 4.9 x 3(VSSOP)   
6SOT-5X3: 3 mm2: 1.6 x 1.6(SOT-5X3)    8SOIC: 29 mm2: 6 x 4.9(SOIC)
8VSSOP: 15 mm2: 4.9 x 3(VSSOP)   
250    280    10    50