MAX6641AUB90+ by Analog Devices

SMBus-Compatible Temperature Monitor with Automatic PWM Fan-Speed Controller


The MAX6641 temperature sensor and fan controller accurately measures the temperature of its own die and the temperature of a remote pn junction. The device reports temperature values in digital form using a 2-wire serial interface. The remote pn junction is typically the emitter-base junction of a common-collector pnp on a CPU, FPGA, or ASIC. The 2-wire serial interface accepts standard System Management Bus (SMBus™) write byte, read byte, send byte, and receive byte commands to read the temperature data and program the alarm thresholds. The temperature data controls a PWM output signal to adjust the speed of a cooling fan, thereby minimizing noise when the system is running cool, but providing maximum cooling when power dissipation increases. The device also features an over-temperature alarm output to generate interrupts, throttle signals, or shut down signals. The MAX6641 operates from supply voltages in the 3.0V to 5.5V range and typically consumes 500µA of supply current. The MAX6641 is available in a slim 10-pin µMAX® package and is available over the -40°C to +125°C automotive temperature range.

Where to Buy

Prices starting from US$1.95

Distributor Stock
Logo for Farnell
Farnell
from US$1.95
478
in stock
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Logo for Analog Devices
Analog Devices
from US$2.14
1,650
in stock
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Logo for Newark Electronics
Newark Electronics
from US$2.35
478
in stock
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Logo for element14
element14
from US$2.10
478
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Features

Tiny 3mm x 5mm µMAX Package
Thermal Diode Input
Local Temperature Sensor
Open-Drain PWM Output for Fan Drive
Programmable Fan Control Characteristics
Automatic Fan Spin-Up Ensures Fan Start
±1°C Remote Temperature Accuracy (+60°C to +145°C)
Controlled Rate of Change Ensures Unobtrusive Fan-Speed Adjustments
Temperature Monitoring Begins at Power-On for Fail-Safe System Protection
Active-Low OT Output for Throttling or Shutdown

Specifications

Interface 2-Wire/I2C/SMBus
Sensor Type Remote
Fan Control PWM
Accuracy (±°C) 1
Temp. Thresh. (°C) Programmable
Package/Pins UMAX/10
BudgetaryPrice (See Notes) 1.55


MAX6641AUB90+ Sensors & Transducers by Analog Devices

TEMPERATURE SENSOR 1DEG C UMAX-10

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

IC Output Type Open Drain
Sensing Accuracy Range ± 1°C
Sensing Temperature Min -40°C
Sensing Temperature Max 125°C
Sensor Case Style µMAX
No. of Pins 10Pins
Supply Voltage Min 3V
Supply Voltage Max 5.5V
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

SMBus-Compatible Temperature M | Analog Devices
Temperature Sensor, 1Deg C, Umax-10 | Newark Electronics
TEMPERATURE SENSOR, 1DEG C, UMAX-10 | element14

Frequently Asked Questions

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Is the MAX6641AUB90+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for MAX6641AUB90+ have stock available?

Authorised distributors including Analog Devices, Newark Electronics, element14 and Farnell have stock available or on a lead time for MAX6641AUB90+ .

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