Features: ·SOP-8 and Mini SOP-8 (MSOP) packages save space
·I2C Bus interface
·Separate open-drain output pin operates as interrupt or comparator/thermostat output
·Register readback capability
·Power up defaults permit stand-alone operation as thermostat
·Shutdown mode to minimize power consumption
·Up to 8 LM75s can be connected to a single bus
·UL Recognized Component
Application·System Thermal Management
·Personal Computers
·Office Electronics
·Electronic Test EquipmentPinout
Specifications
| Temperature Accuracy (+/-) |
2 deg C |
| Supply Min |
4.5, 3 Volt |
| Quiescent Current |
1 mA |
| Temperature Min |
-55 deg C |
| Temperature Max |
125 deg C |
| Interface Type |
2-Wire Serial |
| Programmable Setpoints |
Yes |
| Resolution |
9 bits |
| Resolution degC/LSB |
0.5 |
| Supply Max |
5.5, 3.6 Volt |
| Shut down |
Yes |
| Interrupt Outputs |
1 |
| Fault Queue |
Yes |
| Automotive Selection Guide |
Yes |
| View Using Catalog |
Supply Voltage -0.3V to 6.5V
Voltage at any Pin -0.3V to +VS + 0.3V
Input Current at any Pin (Note 2) 5 mA
Package Input Current (Note 2) 20 mA
O.S. Output Sink Current 10 mA
O.S. Output Voltage 6.5V
Storage Temperature-65 to +150
Soldering Information, Lead Temperature
SOP and MSOP Package (Note 3)
Vapor Phase (60 seconds) 215
Infrared (15 seconds) 220
ESD Susceptibility (Note 4) LM75B LM75C
Human Body Model 2500V 1500V
Machine Model 250V 100VDescriptionThe LM75A, LM75B and LM75C are a family of industy-standard digital temperature sensors with an integrated Sigma-Delta analog-to-digital converter and I 2C ™ 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.
The LM75A operates with a single supply from +2.7V to +5.5V. 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 I 2C 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 LM75A, LM75B and LM75C are available in an SOP-8 pacakage. The LM75B and LM75C are available in an MSOP-8 package.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
| LM75AIM |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LM75AIMX |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LM75B-5.0 MDC |
CS100 |
1 |
13986 |
72 |
0 |
898000 |
4 |
254809951 |
| LM75BIM-3 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM75BIM-5 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM75BIMM-3 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM75BIMM-5 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM75BIMMX-3 |
CS100 |
1 |
13986 |
72 |
0 |
898000 |
4 |
254809951 |
| LM75BIMMX-5 |
CS100 |
1 |
13986 |
72 |
0 |
898000 |
4 |
254809951 |
| LM75BIMX-3 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM75BIMX-5 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM75CIMMX-3 |
CS100 |
1 |
13986 |
72 |
0 |
898000 |
4 |
254809951 |
| LM75CIMMX-5 |
CS100 |
1 |
13986 |
72 |
0 |
898000 |
4 |
254809951 |
| LM75CIMX-3 |
CS100 |
1 |
13986 |
72 |
0 |
898000 |
4 |
254809951 |
| LM75CIMX-5 |
CS100 |
1 |
13986 |
72 |
0 |
898000 |
4 |
254809951 |
Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.For more information on Reliability Metrics, please click here.
Design Tools
| Title |
Size in Kbytes |
Date |
|
|
|
| LMxx - Windows 95/98 VXD drivers with stand alone application for talking to temperature sensors or hardware monitors on a mother board |
1366 Kbytes |
28-Jul-2003 |
View |
Download |
|
If you have trouble printing or viewing PDF file(s), see Printing Problems.
|
Application Notes
| Title |
Size in Kbytes |
Date |
|
| AN-1155: Application Note 1155 A Simple Software I2C Routine for the COP8 |
82 Kbytes |
15-May-04 |
Download |
If you have trouble printing or viewing PDF file(s), see Printing Problems.
|
More Application Notes
| Title |
Size in Kbytes |
Date |
|
| AN-1256: Application Note 1256 Tiny Temperature Sensors for Portable Systems |
66 Kbytes |
1-Oct-02 |
Download |
If you have trouble printing or viewing PDF file(s), see Printing Problems.
|
LM75 Data Sheet
