LM99CIMMX/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Temperature sensor and monitor
• Characteristics: High accuracy, low power consumption
• Package: 8-pin VSSOP
• Essence: LM99CIMMX/NOPB is a precision analog output temperature sensor with an integrated fan control. It can accurately measure the temperature of its surroundings and control the speed of a cooling fan accordingly.
• Packaging/Quantity: Available in reels of 2500 units.

Specifications

• Temperature Range: -55°C to +125°C
• Accuracy: ±1°C
• Supply Voltage: 2.7V to 5.5V
• Output Type: Analog Voltage
• Fan Control Output: PWM or DC

Detailed Pin Configuration

1. VDD: Power supply input
2. GND: Ground
3. ALERT: Open-drain active-low alert output
4. D+ / FANPWM: Digital input for setting fan control mode or PWM output for fan control
5. D- / SCL: Serial clock input for I2C interface
6. AOUT: Analog voltage output proportional to temperature
7. OS: Overtemperature shutdown input
8. TDIODE: Diode-connected transistor input for remote temperature sensing

Functional Features

• High Accuracy: Provides precise temperature measurements with ±1°C accuracy.
• Integrated Fan Control: Can adjust the speed of a cooling fan based on the measured temperature.
• Low Power Consumption: Operates efficiently with a wide supply voltage range.

Advantages and Disadvantages

Advantages

• Accurate temperature monitoring
• Integrated fan control for thermal management
• Low power consumption

Disadvantages

• Limited temperature range compared to some other sensors
• Requires external components for fan control implementation

Working Principles

The LM99CIMMX/NOPB operates by measuring the temperature using an internal diode-connected transistor or an external diode. It converts the temperature into an analog voltage output and provides a digital interface for fan control. The integrated fan control adjusts the fan speed to maintain the desired temperature.

Detailed Application Field Plans

The LM99CIMMX/NOPB is suitable for various applications including: - Computer systems - Industrial equipment - Automotive electronics - Consumer electronics

Detailed and Complete Alternative Models

• TMP117: Offers higher temperature accuracy and wider temperature range.
• LM75: Provides digital temperature readings with a simple I2C interface.

In conclusion, the LM99CIMMX/NOPB is a versatile temperature sensor and fan controller suitable for a wide range of applications, offering high accuracy and efficient thermal management capabilities.

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