MAX6641AUB90+T

Topology:	ADC, PWM Generator, Tach Counter
Base Part Number:	MAX6641
Supplier Device Package:	10-uMAX
Package / Case:	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Voltage - Supply:	3 V ~ 5.5 V
Output Fan:	Yes
Output Alarm:	Yes
Output Type:	SMBus
Series:	--
Accuracy:	±4°C(Max)
Sensing Temperature:	0°C ~ 125°C, 0° ~ 255°C
Sensor Type:	Internal and External
Function:	Fan Control, Temp Monitor
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Introduction to PMIC - Thermal Management

Power management integrated circuit (PMIC) or system PMIC (SPM) are devices used in electronic designs to efficiently manage power in electronic systems. They provide power regulation and power supply sequencing, along with protection features and other communication interfaces like Pulse Width Modulation (PWM) or Inter-Integrated Circuit (I2C). Out of the large variety of PMICs available on the market, thermal management PMICs are especially important in the development of advanced and powerful electronics.

What are Thermal Management PMICs?

Thermal management PMICs, also commonly known as temperature-sensing integrated circuits (ICs), are specifically designed to detect, monitor and regulate temperature levels on a system or component level. Most thermal management PMICs typically comprise of two core components; a temperature sensor and a control logic. These components allow the IC to detect temperature changes in the surroundings, analyse and compare it with the programmed set points, calculate any necessary corrections and then output control signals. These control signals are then used to either adjust settings or power on/off other devices based on temperature measured. Thermal management PMICs are used to help protect critical devices such as processors, memory, storage devices and other applications from heat and other unwanted conditions.

The MAX6641AUB90+T Application Field and Working Principle

The MAX6641AUB90+T is a low-voltage temperature sensor packaged in a small SC-70-6 package. It is specifically designed for applications that require an accurate and reliable temperature sensor with a narrow temperature detection window at low voltages. It is ideal for applications such as digital thermometers, thermally controlled system circuits, over temperature protection (OTP) and temperature-sensing feedback loops. The MAX6641AUB90+T features a two-hour thermal calibration while other traditional PMICs would require multiple calibrations, which makes it highly accurate and reliable. Its closed-loop temperature sensing range is between 32°C and 116°C, with an accuracy of ±1°C. The device is obviously also capable of accurately controlling temperature points within this range.The device features an integrated analog output signal (Vout) and a logic output signal (Vth). The Vout signal is analogue and linearly proportional to the measured temperature, while the Vth signal changes from logic-low to logic-high when the measured temperature rises above the upper temperature threshold of the programmed temperature range. In this way, the device is able to detect temperature changes and then use the output signals to control other power devices based on the temperature detected.In summary, the MAX6641AUB90+T is an efficient and reliable PMIC for temperature sensing and thermal management applications. It is highly accurate, with a range of 32°C – 116°C, further improving its accuracy and reliability, making it ideal for a range of different applications, including digital thermometers, thermally-controlled systems and over-temperature protection circuits.

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