MAX6650EUB+T

The MAX6650EUB+T is a fan speed regulator and monitor with SMBus/I2C compatible interface in 10 pin µMAX package. This fan controller uses SMBus/I2C compatible interface to regulate and monitor speed of 5VDC/12VDC brushless fans with built-in tachometers. It automatically forces the fan’s tachometer frequency (fan speed) to match pre-programmed value in fan speed register by using an external MOSFET or bipolar transistor to linearly regulate voltage across the fan. The MAX6650 regulates speed of a single fan by monitoring its tachometer output. The device provides 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. The MAX6650 is used in RAID servers, workstations, networking and telecommunication applications.

• Supply voltage range is 3V to 5.5V
• Operating temperature range from -40°C to 85°C
• Controls and monitors fan speed for high performance thermal management
• Closed/open loop fan speed control for 5V/12V fans
• Programmable alert output, hardware full-on override
• Output voltage range from 0.3V to 5.2V
• Supply current of 10mA and SCL clock frequency of 400KHz
• Output sink current of 10mA and output source current of 50mA

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