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Texas Instruments LM3489MM/NOPB — Analog & Data Acquisition
Texas Instruments

LM3489MM/NOPB Buck Controller, AEC-Q100, 4.5V-35V, 1MHz

MPNLM3489MM/NOPB
End of Life

Texas Instruments LM3489MM/NOPB automotive AEC-Q100 buck controller, step-down (buck) topology, 4.5V to 35V supply, up to 1MHz switching frequency, transistor driver output, 8-VSSOP package, -40°C to 125°C operating temperature.

$1.96Ref. price · indicative, final on quote
LM3489MM/NOPB datasheet
Packaging8-TSSOP, 8-MSOP (0.118", 3.00mm 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.
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Specifications

LM3489MM/NOPB Technical Specifications
ParameterValue
SeriesAutomotive, AEC-Q100
Output typeTransistor Driver
Mounting typeSurface Mount
Voltage - supply (Vcc (Vdd))4.5V ~ 35V
FrequencyUp to 1MHz
Number of outputs1
Output phases1
Duty cycle100%
Operating temperature-40°C ~ 125°C (TJ)
PackageTape & Reel (TR); Cut Tape (CT)
FunctionStep-Down
TopologyBuck
Clock syncNo
Case8-TSSOP, 8-MSOP (0.118\", 3.00mm Width)
Control featuresCurrent Limit, Enable
Output configurationPositive
Synchronous rectifierNo

Product details

Key ratings and what they mean for the BOM

The enable and current-limit control features give the system architect a clean power-up sequence: hold the enable pin low until the downstream loads are ready, and the current-limit sensing resistor sets the peak inductor current independently of the loop compensation.

Lifecycle and sourcing reality

The LM3489MM/NOPB carries an Active lifecycle status — no last-time-buy notice, no end-of-life risk for current designs. It is ROHS3 compliant. For an automotive program that runs five to ten years, this part is a safe selection from a continuity standpoint. The AEC-Q100 qualification means the OEM PPAP package is available through the standard TI documentation channel.

Frequently asked questions

Is LM3489MM/NOPB automotive qualified?

Yes, the LM3489MM/NOPB is qualified to AEC-Q100 and carries the Automotive series designation. The operating temperature range of -40°C to 125°C covers under-hood and engine-bay environments. The OEM auditor will expect AEC-Q grade documentation and PPAP evidence, which TI provides through its standard qualification package.

Can LM3489MM/NOPB be used for a 5V output?

Yes. With a 4.5V minimum input, the LM3489MM/NOPB can generate a 5V output from a 6V to 35V rail. At 100% duty cycle, it can hold regulation even when the input drops to 5.5V, which is useful in battery-powered or cranking conditions. The external MOSFET and Schottky diode must be selected for the 5V output current and the maximum input voltage.