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Analog Devices MAX6639FAEE+ — Discrete Semiconductors
Analog Devices

MAX6639FAEE+ Temp Monitor, ±1°C Remote Accuracy, 16-QSOP

MPNMAX6639FAEE+
End of Life

Analog Devices MAX6639FAEE+, 2-channel temperature monitor with fan control, ±1°C remote accuracy, I²C/SMBus output, 16-QSOP package, -40°C to +125°C operation.

$4.9Ref. price · indicative, final on quote
MAX6639FAEE+ 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

MAX6639FAEE+ Technical Specifications
ParameterValue
Output typeI²C/SMBus
Sensor typeInternal and External
Mounting typeSurface Mount
Voltage3V ~ 3.6V
Operating temperature-40°C ~ 125°C
PackageTube
Accuracy-2.5°C Local(Max), ±1°C Remote(Max)
FunctionFan Control, Temp Monitor
TopologyADC, PWM Generator, Tach Counter
Output fanYes
Output alarmYes
Case16-SSOP (0.154\", 3.90mm Width)
Sensing temperature0°C ~ 150°C, External Sensor

Product details

What the accuracy ratings mean on the board

The remote channel's ±1°C max error is the figure that matters for processor or FPGA hot-spot monitoring — a diode-connected transistor placed near the heat source gives a reliable reading.

Supply voltage and operating range

The part runs on a 3V to 3.6V supply, which aligns with common 3.3V rails in server, telecom, and industrial control boards. The operating temperature range of -40°C to +125°C covers industrial and extended-temperature environments — suitable for outdoor base stations, motor drives, or engine-bay electronics where the ambient can swing well beyond commercial limits.

Lifecycle and sourcing

The MAX6639FAEE+ carries an Active lifecycle status and is ROHS3 compliant. No end-of-life notice or last-time-buy window is in effect, so the part is safe to specify for new production runs. Sourcing is through independent distribution; submit an RFQ for current pricing and availability.

Frequently asked questions

What is the accuracy of the MAX6639FAEE+ temperature sensor?

The remote channel accuracy is ±1°C (max), and the local channel accuracy is -2.5°C (max). The remote sensor is the one to rely on for precise thermal monitoring.

Does MAX6639FAEE+ require external components?

Yes, the remote temperature measurement needs an external diode-connected transistor (e.g., a 2N3904) placed near the target heat source. The PWM fan output typically requires an external MOSFET or driver to handle the fan current.

What is the difference between MAX6639FAEE and MAX6639FAEE+?

The '+' suffix indicates ROHS3 compliance and lead-free construction. Functionally, the two are identical — the '+' version meets the latest environmental directives for European and global markets.

Where can I buy MAX6639FAEE+ available via RFQ confirmation?

This part is sourced to order through independent distribution. Submit an RFQ for current pricing and availability — lead times and stock levels are confirmed at quote time.