TC74A5
TC74A5 is Tiny Serial Digital Thermal Sensor manufactured by Microchip Technology.
TC74
Tiny Serial Digital Thermal Sensor
Features
- -
- - Digital Temperature Sensing in SOT-23-5 Package Outputs Temperature as an 8-Bit Digital Word Simple Serial Port Interface Solid-State Temperature Sensing:
- ±2°C Accuracy from +25°C to +85°C
- ±3°C Accuracy from 0°C to +125°C
- 3.0 and 5.5V Operating Range
- Low Power:
- 200µA Operating
- 5µA Standby Mode
General Description
The TC74 is a serially accessible digital temperature sensor particularly suited for low cost and small formfactor applications. Temperature data is converted from the onboard thermal sensing element and made available as an 8-bit digital word. munication with the TC74 is acplished via a 2wire SMBus/I2C™ patible serial port. This bus also can be used to implement multi-drop/multi-zone monitoring. The SHDN bit in the CONFIG register can be used to activate the low power Standby mode. Temperature resolution is 1°C. Conversion rate is a nominal 8 samples/sec. Power consumption is only 200µA typ, (5µA Standby, typ). Small size, low installed cost, and ease of use make the TC74 an ideal choice for implementing thermal management in a variety of systems.
Applications
- Thermal Protection for Hard Disk Drives and other PC Peripherals
- PC Card Devices for Notebook puters
- Low Cost Thermostat Controls
- Power Supplies
- Thermistor Replacement
Functional Block Diagram
Package Type
Internal Sensor (Diode)
Serial Port Interface
TO-220
∆∑ Modulator
TC74
Control Logic
1 2 3 4 5
SDA 5
NC SDA GND SCLK...
