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Analog Devices MAX6651EEE+ — Discrete Semiconductors
Analog Devices

MAX6651EEE+ Fan Speed Controller, I²C, 3V-5.5V, 16-QSOP

MPNMAX6651EEE+
End of Life

Maxim Integrated MAX6651EEE+, IC MOTOR DRIVER 3V-5.5V 16QSOP, Controller - Speed, I²C interface, Fan Controller application, Surface Mount, 16-SSOP/QSOP package, -40°C to +85°C, Tube.

$7.45Ref. price · indicative, final on quote
MAX6651EEE+ datasheet
Packaging16-SSOP (0.154", 3.90mm Width)
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

MAX6651EEE+ Technical Specifications
ParameterValue
Mounting typeSurface Mount
Motor type - AC, DCBrushless DC (BLDC)
Voltage3V ~ 5.5V
InterfaceI²C
Operating temperature-40°C ~ 85°C (TA)
PackageTube
FunctionController - Speed
ApplicationsFan Controller
Case16-SSOP (0.154\", 3.90mm Width)
Output configurationPre-Driver - Low Side

Product details

I²C control — what it buys you in the field

The I²C interface lets the system microcontroller set the fan speed, read tachometer feedback, and detect fault conditions (like a stalled or open fan) over just two wires. That means no extra PWM timer or GPIO pins are tied up — the fan control is a register write away. For a field-service scenario, if a fan fails, the host can flag it via the same bus without adding discrete fault lines. The pre-driver is low-side, so the external N-channel MOSFET handles the switching; the controller itself stays cool.

Lifecycle and sourcing

The MAX6651EEE+ is listed as Active and ROHS3 compliant. No end-of-life notice or last-time-buy window is in effect. Sourcing is through independent distribution; pricing and availability are confirmed at quote time against an RFQ.

Frequently asked questions

What is the MAX6651EEE+?

The MAX6651EEE+ is an I²C-controlled fan speed controller for brushless DC fans, operating from a 3V to 5.5V supply and rated for -40°C to +85°C. It drives an external low-side N-channel MOSFET to regulate fan speed based on temperature or direct register commands.

How does the MAX6651EEE+ compare to the MAX6650?

The MAX6650 is a similar I²C fan speed controller but typically offered in a different package variant (e.g., 16-SOIC). The MAX6651EEE+ comes in the smaller 16-QSOP/SSOP footprint. Both share the same 3V to 5.5V supply range, I²C interface, and low-side pre-driver output. The choice is mainly board-space and availability driven.