Microchip logo
Microchip logo
  • All
  • Products
  • Documents
  • Applications Notes
product primary image

MIC281

Status: In Production

Features:

  • Remote temperature measurement using embedded thermal diodes or commodity transistors
  • Accurate remote sensing ±3°C max., 0°C to 100°C
  • Excellent noise rejection
  • I2C and SMBus 2.0 compatible serial interface
  • SMBus timeout to prevent bus lockup
  • Voltage tolerant I/Os
  • Low power shutdown mode
  • Failsafe response to diode faults
  • 3.0V to 3.6V power supply range
  • IttyBitty® SOT23-6 Package
View More
Overview
Documents
Development Environment
Similar Devices
RoHS Information
Buy Now

Device Overview

Summary

The MIC281 is a digital thermal sensor capable of measuring the temperature of a remote PN junction. It is optimized for applications favoring low cost and small size. The remote junction may be an inexpensive commodity transistor, e.g., 2N3906, or an embedded thermal diode such as found in Intel Pentium* II/III/IV CPUs, AMD Athlon* CPUs, and Xilinx Virtex* FPGAs. The MIC281 is 100% software and hardware backward compatible with the MIC280 and features the same industry-leading noise performance and small size. The advanced integrating A/D converter and analog front-end reduce errors due to noise for maximum accuracy and minimum guardbanding. A 2-wire SMBus 2.0-compatible serial interface is provided for host communication. The clock and data pins are 5V-tolerant regardless of the value of VDD. They will not clamp the bus lines low even if the device is powered down. Superior performance, low power, and small size make the MIC281 an excellent choice for cost-sensitive thermal management applications.

Additional Features
    • Remote temperature measurement using embedded thermal diodes or commodity transistors
    • Accurate remote sensing ±3°C max., 0°C to 100°C
    • Excellent noise rejection
    • I2C and SMBus 2.0 compatible serial interface
    • SMBus timeout to prevent bus lockup
    • Voltage tolerant I/Os
    • Low power shutdown mode
    • Failsafe response to diode faults
    • 3.0V to 3.6V power supply range
    • IttyBitty® SOT23-6 Package
Parametrics
Name
Value
# Temps Monitored
2
Typical Accuracy (°)
1
Max. Accuracy @ 25° (°)
3
Max Input/ Supply Current (µA)
400
Temp. Range (°C)
-55 to 125
Operating Voltage Range (V)
3 to 3.6
Typ Supply Current (µA)
400
Device Description
Digital Temperature Sensor
Remote Zone
1
Data Width
8
CRIT Output
False
# of Device per I2C Bus
8
Accuracy
±3%
Oja (C/W)
230

Documents

Jump to:

Development tools data is currently unavailable.

Similar Devices

Product
Description
Typical Accuracy (º)
Vcc Range
Price 5K
Digital Temperature Sensor
1.0
+2.7 - +3.6
$0.62
Digital Temperature Sensor
1
+1.7 - +5.5
$0.47
Digital Temperature Sensor
0.5
+1.7 - +5.5
$0.87
Digital Temperature Sensor
0.5
+1.7 - +5.5
$0.54
Digital Temperature Sensor
0.5
+2.7 - +3.6
$0.73
Digital Temperature Sensor
0.5
+2.7 - +3.6
$0.73
Digital Temperature Sensor
0.5
+1.7 - +3.6
$0.73
Digital Temperature Sensor
0.5
+1.7 - +5.5
$0.99
Digital Temperature Sensor
0.5
+1.7 - +5.5
$1.07
Digital Temperature Sensor
0.5
+1.7 - +5.5
$1.15
Digital Temperature Sensor
0.25
+3.0 - +3.6
$1.24
Digital Temperature Sensor
0.25
+3.0 - +3.6
$1.35
Digital Temperature Sensor
0.25
+3.0 - +3.6
$0.45
Digital Temperature Sensor
0.25
+3.0 - +3.6
$0.56
Digital Temperature Sensor
0.25
+3.0 - +3.6
$0.73
Digital Temperature Sensor
0.25
+3.0 - +3.6
$0.51
Digital Temperature Sensor
0.25
+3.0 - +3.6
$0.67
Digital Temperature Sensor
0.25
+3.0 - +3.6
$0.79
Digital Temperature Sensor
0.25
+3.0 - +3.6
$0.62
Digital Temperature Sensor
0.25
+3.0 - +3.6
$0.79
Digital Temperature Sensor
0.25
+3.0 - +3.6
$0.90
Digital Temperature Sensor
0.25
+3.0 - +3.6
$0.51
Digital Temperature Sensor
0.25
+3.0 - +3.6
$0.62
Digital Temperature Sensor
0.25
+3.0 - +3.6
$0.79
Digital Temperature Sensor
0.25
+3.0 - +3.6
$0.51
Digital Temperature Sensor
0.25
+3.0 - +3.6
$0.62
Digital Temperature Sensor
0.25
+3.0 - +3.6
$0.79
Digital Temperature Sensor
0.25
+3.0 - +3.6
$0.67
Digital Temperature Sensor
0.25
+3.0 - +3.6
$0.79
Digital Temperature Sensor
0.25
+3.0 - +3.6
$0.90
Digital Temperature Sensor
0.25
+3.0 - +3.6
$0.96
Digital Temperature Sensor
0.25
+3.0 - +3.6
$0.96
Digital Temperature Sensor
0.5
+1.7 - +3.6
 
Digital Temperature Sensor
0.25
+1.62 - +3.60
$0.45
Digital Temperature Sensor
0.25
+1.62 - +3.60
$0.56
Digital Temperature Sensor
0.25
+1.62 - +3.60
$0.67
Digital Temperature Sensor
0.25
+1.62 - +3.60
$0.79
Digital Temperature Sensor
0.25
+1.62 - +3.60
$0.62
Temperature Switch
1
+2.7 - +5.5
$0.45
Temperature Switch
1
+2.7 - +5.5
$0.45
Temperature Switch
1
+2.7 - +5.5
$0.45
Temperature Switch
1
+2.7 - +5.5
$0.45
Temperature Switch
0.5
+2.7 - +5.5
$0.62
Temperature Switch
0.5
+2.7 - +5.5
$0.62
Voltage Temperature Sensor
1
+2.3 - +5.5
$0.18
Voltage Temperature Sensor
1
+2.3 - +5.5
$0.22
Voltage Temperature Sensor
1
+3.1 - +5.5
$0.18
Voltage Temperature Sensor
1
+3.1 - +5.5
$0.22
Digital Temperature Sensor
0.5
+2.7 - +5.5
$0.86
Digital Temperature Sensor
0.5
+2.7 - +5.5
$0.81
Digital Temperature Sensor
0.5
+2.7 - +5.5
$0.91
Digital Temperature Sensor
0.5
+2.7 - +5.5
$0.87
Digital Temperature Sensor
0.25
+2.7 - +5.5
$1.21
Digital Temperature Sensor
2
+3.0 - +3.6
$0.62
Digital Temperature Sensor
0.25
+2.7 - +5.5
$0.84
Digital Temperature Sensor
2
+3.0 - +3.6
 
Digital Temperature Sensor
0.5
+3.0 - +3.6
$0.73
Digital Temperature Sensor
0.2
+2.2 - +3.6
$0.73
Digital Temperature Sensor
1.0
+2.7 - +3.6
$0.62
Digital Temperature Sensor
0.2
+1.7 - +3.6
$0.65
Digital Temperature Sensor
0.25
+3.0 - +3.6
$0.46
Digital Temperature Sensor
0.25
+3.0 - +3.6
$0.57
Digital Temperature Sensor
0.25
+3.0 - +3.6
$0.72
Digital Temperature Sensor
1
2.7 - 5.5
$1.24
Digital Temperature Sensor
1
3 - 3.6
$0.46
Digital Temperature Sensor
1
3 - 3.6
$0.39
Digital Temperature Sensor
1
2.7 - 5.5
$0.63
Digital Temperature Sensor
1
2.7 - 5.5
$0.80
Voltage Temperature Sensor
0.5
+2.7 - +4.4
$0.42
Voltage Temperature Sensor
0.5
+2.7 - +4.4
$0.42
Voltage Temperature Sensor
0.5
+2.5 - +5.5
$0.45
Temperature Switch
1
+4.5 - +18
$0.87
Temperature Switch
1
+4.5 - +18
$0.87
Temperature Switch
1
+4.5 - +18
$0.75
Temperature Switch
1
+2.7 - +4.5
$1.01
Temperature Switch
1
+2.7 - +4.5
$0.91
Temperature Switch
0.5
+2.7 - +5.5
$0.53
Temperature Switch
0.5
+2.7 - +5.5
$0.53
Temperature Switch
0.5
+2.7 - +5.5
$0.53
Temperature Switch
0.5
+2.7 - +5.5
$0.53
Digital Temperature Sensor
0.5
+2.7 - +5.5
$0.66
Digital Temperature Sensor
0.5
+2.7 - +5.5
$0.62
Digital Temperature Sensor
0.5
+2.7 - +5.5
$0.66
Digital Temperature Sensor
0.5
+2.7 - +5.5
$0.88
Digital Temperature Sensor
0.5
+2.7 - +5.5
$0.51

RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MIC281-0YM6-TR
0.016450
0.046667
6
SOT-23
-
NiPdAu
e4
MIC281-1YM6-TR
0.016450
0.046667
6
SOT-23
-
NiPdAu
e4
MIC281-2YM6-TR
0.016450
0.046667
6
SOT-23
-
NiPdAu
e4
MIC281-3YM6-TR
0.016450
0.046667
6
SOT-23
-
NiPdAu
e4
MIC281-4YM6-TR
0.016450
0.046667
6
SOT-23
-
NiPdAu
e4
MIC281-5YM6-TR
0.016450
0.046667
6
SOT-23
-
NiPdAu
e4
MIC281-6YM6-TR
0.016450
0.046667
6
SOT-23
-
NiPdAu
e4
MIC281-7YM6-TR
0.016450
0.046667
6
SOT-23
-
NiPdAu
e4
MIC2810-1JGMYML-TR
0.129004
16
VQFN
3x3x0.90mm
NiPdAu
e4
MIC2810-FGSYML-TR
0.129004
16
VQFN
3x3x0.90mm
NiPdAu
e4
MIC2810-4GPYML-TR
0.129004
16
VQFN
3x3x0.90mm
NiPdAu
e4
MIC2810-4GKYML-TR
0.129004
16
VQFN
3x3x0.90mm
NiPdAu
e4
MIC2810-4GMYML-TR
0.129004
16
VQFN
3x3x0.90mm
NiPdAu
e4
MIC2810-4GSYML-TR
0.129004
16
VQFN
3x3x0.90mm
NiPdAu
e4
MIC2810-CGJYML-TR
0.129004
16
VQFN
3x3x0.90mm
NiPdAu
e4
MIC2810-4MSYML-TR
0.129004
16
VQFN
3x3x0.90mm
NiPdAu
e4
MIC2811-4GMSYML-TR
0.129004
16
VQFN
3x3x0.90mm
NiPdAu
e4
MIC2810-44MYML-TR
0.129004
16
VQFN
3x3x0.90mm
NiPdAu
e4
MIC2811-4GJLYML-TR
0.129004
16
VQFN
3x3x0.90mm
NiPdAu
e4
MIC2810-4LSYML-TR
0.129004
16
VQFN
3x3x0.90mm
NiPdAu
e4
MIC2810-1J6JYML-TR
0.129004
16
VQFN
3x3x0.90mm
NiPdAu
e4
MIC2810-1J6SYML-TR
0.129004
16
VQFN
3x3x0.90mm
NiPdAu
e4
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

Buy

Grid
View
Table
View
Filter:
Apply
Clear
Product
Leads
Package Type
Temp Range
Packing Media
5K Pricing
Buy