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Analog Devices LTC1840IGN#PBF — Discrete Semiconductors
Analog Devices

LTC1840IGN#PBF Fan Controller, I²C/SMBus, 2.7V-5.75V

MPNLTC1840IGN#PBF
End of Life

Analog Devices LTC1840IGN#PBF, PMOS Fan Controller - Speed, I²C/SMBus interface, 2.7V-5.75V supply, Pre-Driver - High Side (2), -40°C to 85°C, 16-SSOP package.

$9.54Ref. price · indicative, final on quote
LTC1840IGN#PBF 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

LTC1840IGN#PBF Technical Specifications
ParameterValue
Mounting typeSurface Mount
Motor type - AC, DCBrushed DC
Voltage2.7V ~ 5.75V
InterfaceI²C, SMBus
Operating temperature-40°C ~ 85°C (TA)
PackageTube
FunctionController - Speed
TechnologyPMOS
ApplicationsFan Controller
Case16-SSOP (0.154\", 3.90mm Width)
Output configurationPre-Driver - High Side (2)

Product details

What the ratings mean for your BOM

The pre-driver high-side output configuration (2) means this part does not integrate power MOSFETs — it drives external N-channel FETs. That keeps the heat out of the controller and lets you scale the fan current by choosing appropriate FETs. The I²C/SMBus interface simplifies wiring: a single two-wire bus controls multiple fan channels without extra GPIOs. The -40°C to 85°C operating range covers industrial enclosures and outdoor telecom cabinets, though the fan itself may have a narrower temperature spec.

Lifecycle and sourcing

The LTC1840IGN#PBF carries an active lifecycle status and is ROHS3 compliant. No end-of-life notice or last-time-buy schedule is in effect.

Frequently asked questions

What are the typical applications of the LTC1840IGN#PBF?

It is designed as a fan controller for brushed DC fans, typically used in server power supplies, telecom equipment, and industrial systems where digital speed control via I²C or SMBus is required.

What is the equivalent or replacement for the LTC1840IGN#PBF?

No direct pin-compatible replacement is listed. The LTC1695CS5#TRMPBF is a different part — a fully integrated fan driver for brushless DC fans with a 0.18 A output, not a pre-driver for brushed DC motors. Verify your motor type and drive topology before substituting.

What is the LTC1840IGN#PBF datasheet?

The datasheet for the LTC1840IGN#PBF is available from Analog Devices and covers the I²C/SMBus command set, external FET selection guidelines, and thermal layout recommendations.