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LM87CIMTX
Product Overview
Category: Integrated Circuit (IC)
Use: The LM87CIMTX is a versatile integrated circuit designed for temperature sensing and fan control applications in electronic devices. It provides accurate temperature measurements and enables efficient control of cooling systems.
Characteristics: - Temperature sensing - Fan control - Accurate measurements - Efficient cooling system control
Package: The LM87CIMTX is available in a small outline package (SOP) with 16 pins, making it suitable for compact electronic devices.
Essence: The essence of the LM87CIMTX lies in its ability to accurately sense temperature and control fans, ensuring optimal thermal management in electronic devices.
Packaging/Quantity: The LM87CIMTX is typically sold in reels or tubes containing multiple units, making it convenient for mass production and assembly processes.
Specifications
The LM87CIMTX offers the following specifications:
- Temperature Sensing Range: -55°C to +125°C
- Supply Voltage Range: 2.7V to 5.5V
- Fan Control Outputs: 3
- Digital Interface: I2C/SMBus compatible
- Resolution: 9 bits
- Accuracy: ±2°C (typical)
- Shutdown Current: 1µA (typical)
Detailed Pin Configuration
The LM87CIMTX features 16 pins arranged as follows:
- VCC: Power supply input
- GND: Ground reference
- SDA: Serial data line (I2C/SMBus)
- SCL: Serial clock line (I2C/SMBus)
- ALERT: Interrupt output
- TACH1: Tachometer input for fan 1
- TACH2: Tachometer input for fan 2
- TACH3: Tachometer input for fan 3
- FAN1: PWM output for fan 1 control
- FAN2: PWM output for fan 2 control
- FAN3: PWM output for fan 3 control
- VDD: Power supply input for fans
- VSS: Ground reference for fans
- VREF: Reference voltage output
- AD0: Address select bit 0
- AD1: Address select bit 1
Functional Features
The LM87CIMTX offers the following functional features:
- Accurate temperature sensing using an internal sensor or external diode-connected transistor
- Fan speed control based on temperature measurements
- Programmable temperature limits and hysteresis settings
- Automatic fan shutdown in case of over-temperature conditions
- Interrupt output for temperature alerts
- I2C/SMBus compatible digital interface for easy integration with microcontrollers
Advantages and Disadvantages
Advantages: - Accurate temperature sensing enables precise thermal management - Efficient fan control ensures optimal cooling performance - Flexible programmability allows customization for various applications - Compact package size facilitates integration into space-constrained designs
Disadvantages: - Limited number of fan control outputs (3) - Requires additional external components for certain configurations - Relatively higher cost compared to simpler temperature sensors
Working Principles
The LM87CIMTX operates by measuring the temperature using its internal sensor or an external diode-connected transistor. It converts the temperature readings into digital values and compares them with user-defined temperature limits. Based on these comparisons, it adjusts the fan speeds using pulse-width modulation (PWM) signals to maintain the desired temperature range.
Detailed Application Field Plans
The LM87CIMTX finds applications in various electronic devices that require temperature sensing and fan control, including but not limited to:
- Personal computers and laptops
- Servers and data centers
- Home appliances (e.g., refrigerators, air conditioners)
- Automotive electronics
- Industrial equipment
Detailed and Complete Alternative Models
- LM75A: Digital temperature sensor with I2C interface
- MAX31730: Temperature sensor and fan controller with automatic PWM generation
- TMP102: Low-power digital temperature sensor with I2C interface
- ADT7410: High-accuracy digital temperature sensor with I2C interface
- DS1621: Programmable digital temperature sensor with 2-wire interface
These alternative models offer similar functionality to the LM87CIMTX and can be considered based on specific application requirements.
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Énumérez 10 questions et réponses courantes liées à l'application de LM87CIMTX dans les solutions techniques
Sure! Here are 10 common questions and answers related to the application of LM87CIMTX in technical solutions:
Q: What is LM87CIMTX? A: LM87CIMTX is a temperature sensor and system monitor integrated circuit (IC) designed for use in various technical solutions.
Q: What are the key features of LM87CIMTX? A: LM87CIMTX features include temperature sensing, fan control, voltage monitoring, and general-purpose input/output (GPIO) capabilities.
Q: How does LM87CIMTX measure temperature? A: LM87CIMTX uses an internal temperature sensor or external diode-connected transistor to accurately measure temperature.
Q: Can LM87CIMTX control fan speed? A: Yes, LM87CIMTX can control fan speed based on temperature measurements, ensuring optimal cooling performance.
Q: What types of voltage monitoring does LM87CIMTX support? A: LM87CIMTX supports monitoring of supply voltages, including VCC, VCCP, and VBAT, providing valuable information for system health monitoring.
Q: Can LM87CIMTX be used in battery-powered applications? A: Yes, LM87CIMTX has low power consumption and can be used in battery-powered applications, helping to extend battery life.
Q: Does LM87CIMTX have any built-in protection features? A: Yes, LM87CIMTX includes over-temperature and over-voltage protection, safeguarding the system from potential damage.
Q: Can LM87CIMTX interface with other devices or microcontrollers? A: Yes, LM87CIMTX provides I2C/SMBus-compatible interface, allowing easy integration with other devices or microcontrollers.
Q: What is the operating temperature range of LM87CIMTX? A: LM87CIMTX can operate within a wide temperature range, typically from -40°C to +125°C.
Q: In what applications can LM87CIMTX be used? A: LM87CIMTX is commonly used in desktop and laptop computers, servers, industrial equipment, and other electronic systems requiring temperature monitoring and control.
Please note that these answers are general and may vary depending on specific implementation and requirements.