Texas Instruments LM57 Temperature Switch/Analog Temperature Sensors
Texas Instruments LM57 Temperature Switch/Analog Temperature Sensors are a precision, dual-output, temperature switch with integrated analog temperature sensor. The trip temperature (TTRIP) is programmable by using two external 1% resistors. Using extremely small packaged resistors (0.5mm x 1mm), the LM57 can be programmed to any of 256 trip temperatures while consuming very little board space. The VTEMP output delivers an analog output voltage, which is proportional with a negative temperature coefficient (NTC) to the measured temperature. Texas Instruments LM57 Sensors are ideal for cellphones, wireless transceivers, digital cameras, PDAs, battery management, disk drive, and appliances.
Features
- Trip temperature set by external resistors
- External resistor tolerance contributes zero error
- Push-pull and open-drain temperature switch outputs
- -50°C to +150°C operating and trip-temperature range
- Linear analog VTEMP temperature sensor output
- Analog and digital outputs are short-circuit protected
- TRIP-TEST pin allows in-system testing
- Latching function for the digital outputs
- Small 2.5mm by 2.5mm 8-pin WSON package
Applications
- Cellphones
- Wireless transceivers
- Digital cameras
- Personal Digital Assistants (PDAs)
- Battery management
- Automotive
- Disk drives
- Games
- Appliances
Development Tool
Texas Instruments LM57EVM Evaluation Module
Evaluates the operation and performance of TI LM57 Temperature Switch/Analog Temperature Sensor.
Published: 2015-06-04
| Updated: 2023-10-31