MAX6650EUB+ by Analog Devices

Fan-Speed Regulators and Monitors with SMBus/I²C-Compatible Interface


The MAX6650/MAX6651 fan controllers use an SMBus/I²C-compatible interface to regulate and monitor the speed of 5VDC/12VDC brushless fans with built-in tachometers. They automatically force the fan's tachometer frequency (fan speed) to match a preprogrammed value in the Fan-Speed Register by using an external MOSFET or bipolar transistor to linearly regulate the voltage across the fan. The MAX6650 regulates the speed of a single fan by monitoring its tachometer output. The MAX6651 also regulates the speed of a single fan, but it contains additional tachometer inputs to monitor up to four fans and control them as a single unit when they are used in parallel. The MAX6650/MAX6651 provide general-purpose input/output (GPIO) pins that serve as digital inputs, digital outputs, or various hardware interfaces. Capable of sinking 10mA, these open-drain inputs/outputs can drive an LED. To add additional hardware control, configure GPIO1 to fully turn on the fan in case of software failure. To generate an interrupt when a fault condition is detected, configure GPIO0 to behave as an active-low alert output. Synchronize multiple devices by setting GPIO2 (MAX6651 only) as an internal clock output or an external clock input. The MAX6650 is available in a space-saving 10-pin µMAX® package, and the MAX6651 is available in a small 16-pin QSOP package.

Where to Buy

Prices starting from US$2.88

Distributor Stock
Logo for RS
RS
from US$4.25
32
in stock
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Logo for Newark Electronics
Newark Electronics
from US$4.64
751
in stock
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Logo for element14
element14
from US$3.98
751
in stock
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Logo for Farnell
Farnell
from US$3.82
751
in stock
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Logo for Avnet Asia
Avnet Asia
from US$2.88
-
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Features

Closed/Open-Loop Fan-Speed Control for 5V/12V Fans
2-Wire SMBus/I²C-Compatible Interface
Monitors Tachometer Output Single Tachometer (MAX6650) Up to Four Tachometers (MAX6651)
Single Tachometer (MAX6650)
Up to Four Tachometers (MAX6651)
Programmable Alert Output
GPIOs
Hardware Full-On Override
Synchronize Multiple Fans
Four Selectable Slave Addresses
3V to 5.5V Supply Voltage
Small Packages 10-Pin µMAX (MAX6650) 16-Pin QSOP (MAX6651)
10-Pin µMAX (MAX6650)
16-Pin QSOP (MAX6651)

Specifications

Interface 2-Wire/I2C/SMBus
Fan Control Linear
Package/Pins UMAX/10
BudgetaryPrice (See Notes) 3.12


MAX6650EUB+ Semiconductors - ICs by Analog Devices

REG/MONITOR FAN-SPEED SMD 6650

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

Specifications

Motor Type DC Brushless
No. of Outputs 1Outputs
Output Current 10mA
Output Voltage 5.2V
Driver Case Style µMAX
No. of Pins 10Pins
Supply Voltage Min 3V
Supply Voltage Max 5.5V
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)
Base Number 6650
Clock Frequency 254kHz
IC Temperature Range Industrial
Operating Temperature Range -40°C to +85°C
Output Current Max 50mA
Supply Voltage Range 3V to 5.5V
Termination Type Surface Mount Device

Alternative Descriptions

Reg/Monitor, Fan-Speed, Smd, 6650 | Newark Electronics
REG/MONITOR, FAN-SPEED, SMD, 6650 | element14
TEMPERATURE FAN-SPEED REG. I2C UMAX10 | RS
Fan-Speed Regulator and Monitor 10-Pin uMAX Tube | Avnet Asia

Frequently Asked Questions

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Is the MAX6650EUB+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for MAX6650EUB+ have stock available?

Authorised distributors including Newark Electronics, element14, Farnell, RS and Avnet Asia have stock available or on a lead time for MAX6650EUB+ .

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