MIC281-4YM6-TR datasheet, PDF - EEWORLD Datasheet

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MIC281-4YM6-TR: DescriptionTemp Sensor Digital Serial (2-Wire, I2C, SMBus) 6-Pin SOT-23 T/R; File Size644KB，14 Pages; ManufacturerMicrochip; Websitehttps://www.microchip.com; Environmental Compliance

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MIC281-4YM6-TR Overview

Temp Sensor Digital Serial (2-Wire, I2C, SMBus) 6-Pin SOT-23 T/R

MIC281-4YM6-TR Parametric

Parameter Name	Attribute value
EU restricts the use of certain hazardous substances	Compliant
ECCN (US)	EAR99
Part Status	Active
HTS	8542.39.00.01
Module/IC Classification	IC
Accuracy	±2°C
Interface Type	Serial (2-Wire, I2C, SMBus)
Output Type	Digital
Minimum Operating Supply Voltage (V)	3
Typical Operating Supply Voltage (V)	3.3
Maximum Operating Supply Voltage (V)	3.6
Maximum Supply Current (uA)	400
Maximum Power Dissipation (mW)	109
Minimum Operating Temperature (°C)	-55
Maximum Operating Temperature (°C)	125
Packaging	Tape and Reel
Supplier Package	SOT-23
Pin Count	6
Mounting	Surface Mount
Package Height	1.3(Max)
Package Length	2.9
Package Width	1.6
PCB changed	6

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MIC281

Low-Cost IttyBitty™ Thermal Sensor

General Description

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 V

. 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.

Datasheets and support documentation are available on

Micrel’s website at:

www.micrel.com.

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

I C 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

Available in IttyBitty SOT23-6 package

Applications



Desktop, server, and notebook computers

Set-top boxes

Game consoles

Appliances

Typical Application

IttyBitty is a trademark of Micrel, Inc. All other trademarks are the property of their respective owners.

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 •

http://www.micrel.com

April 23, 2014

Revision 2.0

MIC281-4YM6-TR Related Products

	MIC281-4YM6-TR	MIC281-0YM6-TR
Description	Temp Sensor Digital Serial (2-Wire, I2C, SMBus) 6-Pin SOT-23 T/R	Temp Sensor Digital Serial (2-Wire, I2C, SMBus) 6-Pin SOT-23 T/R
EU restricts the use of certain hazardous substances	Compliant	Compliant
ECCN (US)	EAR99	EAR99
Part Status	Active	Active
HTS	8542.39.00.01	8542.39.00.01
Module/IC Classification	IC	IC
Accuracy	±2°C	±2°C
Interface Type	Serial (2-Wire, I2C, SMBus)	Serial (2-Wire, I2C, SMBus)
Output Type	Digital	Digital
Minimum Operating Supply Voltage (V)	3	3
Typical Operating Supply Voltage (V)	3.3	3.3
Maximum Operating Supply Voltage (V)	3.6	3.6
Maximum Supply Current (uA)	400	400
Maximum Power Dissipation (mW)	109	109
Minimum Operating Temperature (°C)	-55	-55
Maximum Operating Temperature (°C)	125	125
Packaging	Tape and Reel	Tape and Reel
Supplier Package	SOT-23	SOT-23
Pin Count	6	6
Mounting	Surface Mount	Surface Mount
Package Height	1.3(Max)	1.3(Max)
Package Length	2.9	2.9
Package Width	1.6	1.6
PCB changed	6	6

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