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ON-Semiconductor
ON Semiconductor
Description : Industry Standard Digital Temperature Sensor in CSP Package With 2-wire Interface

Industry Standard Digital Temperature Sensor in CSP Package With 2-wire Interface

The NCT475 is a two−wire serially programmable Temperature Sensor With an over−Temperature/interrupt output pin to signal out of limit conditions. This is an open−drain pin and can operate in either comparator or interrupt mode. Temperature measurements are converted into digital form using a high resolution (12 bit), sigma−delta, analog−to−digital converter (ADC). The device operates over the –55°C to +125°C Temperature range.

Features
• 12−bit Temperature−to−Digital Converter
• Input Voltage Range from 3.0 V to 5.5 V
Temperature Range from −55°C to +125°C
SMBus/I2C Interface
• Over Temperature Indicator
• Support for SMBus ALERT
• Shutdown Mode for Low Power Consumption
• One−Shot Mode
• Available in 6 Ball CSP Package With Multiple Address Options
• These are Pb−Free Devices

Typical Applications
• Computer Thermal Monitoring
• Thermal Protection
• Isolated Sensors
• Battery Management
• Office Electronics
• Electronic Test Equipment
• Thermostat Controls
• System Thermal Management

ON-Semiconductor
ON Semiconductor
Description : 2-Wire Serial Temperature Sensor and Monitor

The LM75 is a serially programmable Temperature Sensor that notifies the host controller when ambient Temperature exceeds a user–programmed setpoint. Hysteresis is also programmable. The INT/CMPTR output is programmable as either a simple comparator for thermostat operation or as a Temperature event interrupt. Communication With the LM75 is accomplished via a two–wire bus that is compatible With Industry standard protocols. This permits reading the current Temperature, programming the setpoint and hysteresis, and configuring the device.
The LM75 powers up in Comparator Mode With a default setpoint of 80°C With 5°C hysteresis. Defaults allow independent operation as a stand–alone thermostat. A shutdown command may be sent via the 2–wire bus to activate the low–power standby mode. Address selection inputs allow up to eight LM75’s to share the same 2–wire bus for multi–zone monitoring.
All registers can be read by the host and the INT/CMPTR output’s polarity is user programmable. Both polled and interrupt driven systems are easily accommodated. Small physical size, low installed cost, and ease of use make the LM75 an ideal choice for implementing sophisticated system management schemes.

Features
Temperature Sensing: 0.5°C Accuracy (Typ.)
• Operates from: 55°C to +125°C
• Operating Range: 2.7V – 5.5V
• Programmable Trip Point and Hysteresis With
   Power–up Defaults
• Standard 2–Wire Serial Interface
• Thermal Event Alarm Output Functions as Interrupt or Comparator /
   Thermostat Output
• Up to 8 LM75’s May Share the Same Bus
• Shutdown Mode for Low Standby Power Consumption
• 5V Tolerant I/O at VDD = 3V
• Low Power 250µA (Typ.) Operating, 1µA (Typ.)
   Shutdown Mode

Typical Applications
• Thermal Protection for High Performance CPUs
• Solid–State Thermometer
• Fire/Heat Alarms
• Thermal Management in Electronic Systems:
   Computers
   Telecom Racks
   Power Supplies / UPS
• Copiers / Office Electronics
• Consumer Electronics / Amplifiers
• Process Control

ONSEMI
ON Semiconductor
Description : 2-Wire Serial Temperature Sensor and Monitor

The LM75 is a serially programmable Temperature Sensor that notifies the host controller when ambient Temperature exceeds a user–programmed setpoint. Hysteresis is also programmable. The INT/CMPTR output is programmable as either a simple comparator for thermostat operation or as a Temperature event interrupt. Communication With the LM75 is accomplished via a two–wire bus that is compatible With Industry standard protocols. This permits reading the current Temperature, programming the setpoint and hysteresis, and configuring the device.
The LM75 powers up in Comparator Mode With a default setpoint of 80°C With 5°C hysteresis. Defaults allow independent operation as a stand–alone thermostat. A shutdown command may be sent via the 2–wire bus to activate the low–power standby mode. Address selection inputs allow up to eight LM75’s to share the same 2–wire bus for multi–zone monitoring.
All registers can be read by the host and the INT/CMPTR output’s polarity is user programmable. Both polled and interrupt driven systems are easily accommodated. Small physical size, low installed cost, and ease of use make the LM75 an ideal choice for implementing sophisticated system management schemes.

Features
Temperature Sensing: 0.5°C Accuracy (Typ.)
• Operates from: 55°C to +125°C
• Operating Range: 2.7V – 5.5V
• Programmable Trip Point and Hysteresis With
   Power–up Defaults
• Standard 2–Wire Serial Interface
• Thermal Event Alarm Output Functions as Interrupt or Comparator /
   Thermostat Output
• Up to 8 LM75’s May Share the Same Bus
• Shutdown Mode for Low Standby Power Consumption
• 5V Tolerant I/O at VDD = 3V
• Low Power 250µA (Typ.) Operating, 1µA (Typ.)
   Shutdown Mode

Typical Applications
• Thermal Protection for High Performance CPUs
• Solid–State Thermometer
• Fire/Heat Alarms
• Thermal Management in Electronic Systems:
   Computers
   Telecom Racks
   Power Supplies / UPS
• Copiers / Office Electronics
• Consumer Electronics / Amplifiers
• Process Control

Part Name(s) : MAX1618 MAX1618MUB
MaximIC
Maxim Integrated
Description : Remote Temperature Sensor With SMBus Serial Interface

General Description
The MAX1618 precise digital thermometer reports the Temperature of a remote Sensor. The remote Sensor is a diode-connected transistor—typically a low-cost, easily mounted 2N3904 NPN type—that replaces conventional thermistors or thermocouples. Remote accuracy is ±3°C for multiple transistor manufacturers, With no calibration needed. The MAX1618 can also measure the die Temperature of other ICs, such as microprocessors, that contain an on-chip, diode-connected transistor.

Features
♦ Single Channel: Measures Remote CPU Temperature
♦ No Calibration Required
SMBus 2-Wire Serial Interface
♦ Programmable Under/OverTemperature Alarms
♦ OverTemperature Output for Fan Control (Thermostat Mode)
♦ Supports SMBus Alert Response Accuracy
    ±3°C (+60°C to +100°C)
    ±5°C (-55°C to +120°C)
♦ 3µA (typ) Standby Supply Current
♦ 900µA (max) Supply Current in Autoconvert Mode
♦ +3V to +5.5V Supply Range
♦ Small 10-Pin µMAX Package

Applications
    Desktop and Notebook Computers
    Smart Battery Packs
    LAN Servers
    Industrial Controls
    Central Office Telecom Equipment
    Test and Measurement
    Multichip Modules

Part Name(s) : MAX1669 MAX1669EEE
MaximIC
Maxim Integrated
Description : Fan Controller and Remote Temperature Sensor With SMBus Serial Interface

General Description
The MAX1669 fan controller includes a precise digital thermometer that reports the Temperature of a remote Sensor. The remote Sensor is a diode-connected transistor—typically a low-cost, easily mounted 2N3906 PNP type—replacing conventional thermistors or thermocouples. Remote accuracy is ±3°C for transistors from multiple manufacturers, With no calibration needed. The MAX1669 has an independent fan controller With a low current logic output requiring external power components to Interface to a DC brushless fan. The fan controller has two modes of operation: a low-frequency (20Hz to 160Hz) PWM mode intended for driving the fan motor, or a high-impedance DAC output that generates a variable DC control voltage. In PWM mode, the FAN frequency can be synchronized to an external clock.

Features
♦ Measures Remote CPU Temperature
♦ No Calibration Required
♦ 20Hz to 160Hz PWM Output for Fan
♦ PWM Frequency Sync Input (260kHz)
♦ Flexible Fan Interface: Linear or PWM
SMBus 2-Wire Serial Interface
♦ Programmable Under/OverTemperature Alarms
♦ ALERT Latched Interrupt Output
♦ OVERT Thermostat Output
♦ Two GPIO Pins
♦ Write-Once Configuration Protection
♦ Supports SMBus Alert Response
♦ ±3°C Temperature Accuracy (-40°C to +125°C, remote)
♦ 3µA Standby Supply Current
♦ +3V to +5.5V Supply Range
♦ Small 16-Pin QSOP Package

Applications
    Pentium® CPU Cooling
    Desktop Computers
    Notebook Computers
    Servers
    Workstations

Part Name(s) : MAX1619 MAX1619MEE
MaximIC
Maxim Integrated
Description : Remote/Local Temperature Sensor With Dual Alarm Outputs and SMBus Serial Interface

General Description
The MAX1619 is a precise digital thermometer that reports the Temperature of both a remote Sensor and its own package. The remote Sensor is a diode-connected transistor—typically a low-cost, easily mounted 2N3904 NPN type—that replaces conventional thermistors or thermocouples. Remote accuracy is ±3°C for multiple transistor manufacturers, With no calibration needed. The remote channel can also measure the die Temperature of other ICs, such as microprocessors, that contain an on-chip, diode-connected transistor.

Features
♦ Two Channels Measure Both Remote and Local
   Temperatures
♦ No Calibration Required
SMBus 2-Wire Serial Interface
♦ Programmable Under/OverTemperature Alarms
♦ OVERT Output for Fan Control
♦ Supports SMBus Alert Response
♦ Supports Manufacturer and Device ID Codes
♦ Accuracy
   ±2°C (+60°C to +100°C, local)
   ±3°C (-40°C to +125°C, local)
   ±3°C (+60°C to +100°C, remote)
♦ 3µA (typ) Standby Supply Current
♦ 70µA (max) Supply Current in Auto-Convert Mode
♦ +3V to +5.5V Supply Range
♦ Write-Once Protection
♦ Small 16-Pin QSOP Package

Applications
   Desktop and Notebook Computers
   Central Office Telecom Equipment
   Smart Battery Packs
   Test and Measurement
   LAN Servers
   Multichip Modules
   Industrial Controls

Description : Digital Temperature Sensor and Thermal WATCHDOG With Two-Wire Interface

General Description
The LM75 Temperature Sensor includes a delta-sigma analog-to-digital converter, and a digital overtempera ture detector. The host can query the LM75 through its I2C Interface to read Temperature at any time. The open-drain overTemperature output (OS) sinks current when the programmable Temperature limit is exceeded. The OS output operates in either of two modes, com parator or interrupt. The host controls the Temperature at which the alarm is asserted (TOS) and the hysteresis Temperature below which the alarm condition is not valid (THYST). Also, the LM75’s TOSand THYSTregis ters can be read by the host. The address of the LM75 is set With three pins to allow multiple devices to work
on the same bus. Power-up is in comparator mode, With defaults of TOS= +80°C and THYST= +75°C. The 3.0V to 5.5V supply voltage range, low supply current, and I2C Interface make the LM75 ideal for many applications in thermal management and protection.

Features
♦ SO (SOP) and µMAX®(µSOP) Packages
I2C Bus Interface
♦ Separate Open-Drain OS Output Operates as
   Interrupt or Comparator/Thermostat Input
♦ Register Readback Capability
♦ Power-Up Defaults Permit Stand-Alone Operation as a Thermostat
♦ 3.0V to 5.5V Supply Voltage
♦ Low Operating Supply Current 250µA (typ), 1mA(max)
♦ 4µA (typ) Shutdown Mode Minimizes Power Consumption
♦ Up to Eight LM75s Can Be Connected to a Single Bus
♦ Pin- and/or Register-Compatible With Improved Performance Maxim Sensors Including
   MAX7500, MAX6625, MAX6626, DS75LV, and DS7505

Applications
   Thermal System Management
   Thermal Protection
   Test Equipment
   Computers and Office Electronics

Description : 12-Bit Plus Sign Temperature Sensors With SMBus/I2C-Compatible Serial Interface

General Description
The MAX6633/MAX6634/MAX6635 combine a Temperature Sensor, a programmable overTemperature alarm, and an SMBus™/I2C™-compatible serial Interface into a single package.

Features
♦ +3V to +5.5V Supply Range
♦ Accuracy
   ±1°C max (0°C to +50°C)
   ±1.5°C max (-20°C to +85°C)
   ±2.5°C max (-40°C to +125°C)
   ±2.5°C typ (+150°C)
♦ User-Programmable Temperature Thresholds
   (MAX6634/MAX6635)
♦ User-Configurable Alarm Output(s)
   (MAX6634/MAX6635)
♦ Ability to Respond to SMBus/I2C-Compatible Alert
   Response Address (MAX6634/MAX6635)
♦ OVERT Output for System Shutdown (MAX6635)
♦ Multiple Devices per Bus
   16 devices (MAX6633)
   8 devices (MAX6634)
   4 devices (MAX6635)

Applications
   Battery Temperature Alarms
   PC Temperature Control
   Automotive Equipment

Part Name(s) : BU9817FV
ROHM
ROHM Semiconductor
Description : 4-channel Temperature Sensor IC for PCs With I2C BUS Interface

The BU9817FV is a 4-channel, 8-bit, A / D converter / overvoltage detector that is perfect for Temperature Sensors With built-in I2C BUS Interfaces. The host can access the BU9817FV anytime for the voltage data.

Features
1) By attaching a thermistor, a maximum four-channel Temperature Sensor is possible.
2) Can set comparison voltages independently.
3) Built-in I2C BUS Interface.
4) Detection level and operating mode settings are programmable.
5) Extremely low operating current perfect for portable equipment.
6) Operating voltage of VDD = 3V to 5.5V.

Applications
    Notebook computers, desktop computers, household electric appliances

Description : ±1 °C accurate, SMBus-compatible, 8-pin, remote/local digital Temperature Sensor With over Temperature alarms

GENERAL DESCRIPTION
The Philips SA56004X is an SMBus compatible, 11-bit remote/local digital Temperature Sensor With over Temperature alarms. The remote channel of the SA56004 monitors a diode junction, such as a substrate PNP of a microprocessor or a diode connected transistor such as the 2N3904 (NPN) or 2N3906 (PNP). With factory trimming, remote Sensor accuracy of ±1°C is achieved.
   
FEATURES
• Accurately senses Temperature of remote microprocessor thermal
    diodes or diode connected transistors Within ±1 °C
• On-chip local Temperature sensing
• 11-bit, 0.125 °C resolution
• 8 different device addresses are available for server applications.
    The SA56004ED/EDP With marking code 56004E/600E is
    address compatible With the National LM86, the MAX6657/8 and
    the ADM1032.
• Offset registers available for adjusting the remote Temperature
    accuracy
• Programmable under/overTemperature alarms: ALERT and T_CRIT
SMBus 2.0 compatible Interface, supports TIMEOUT
• Operating voltage range: 3.0 V to 3.6 V
I2C-bus standard and fast mode compatible
• TSSOP8 and SO8 packages
• Programmable conversion rate (0.0625 Hz to 26 Hz)
• Undervoltage lockout prevents erroneous Temperature readings
• Latch-up testing is done to JESDEC Standard JESD78 which
    exceeds 100 mA
   
APPLICATIONS
• System thermal management in laptops, desktops, servers and
    workstations
• Computers and office electronic equipment
• Electronic test equipment & instrumentation
• HVAC
• Industrial controllers and embedded systems
   

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