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LM7480-Q1

External dual-MOSFET ideal-diode and power-path controller

Uses external back-to-back N-channel MOSFETs for reverse-polarity protection, reverse-current blocking and load disconnect rather than carrying load current inside the IC. LM7480-Q1 is the family name for 00/01: 00 combines linear forward-drop regulation with a comparator, while 01 is comparator-only. The 10.5mV regulation specification is not shared by both.

AutomotiveActiveExample package: WSON (DRR) · 12 pinVerified 2026-11-06

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5-second verdict

AutomotiveAEC-Q100 Grade 1

Temperature−40°C to +125°C (TA)

Functional safetyFunctional Safety-Capable

LifecycleActive

In one sentence: Qualification is grounded in this TI product's documentation; no grade is inferred from temperature. An ordering table may show junction or variant-specific limits, which must be distinguished from ambient conditions. TI explicitly lists Functional Safety-Capable. This is a device-documentation category, not system ASIL certification; assess the exact function, assumptions and safety manual.

Key specifications

Operating input range3–65 V; transient and pin limits must also be met

Power stageExternal back-to-back N-channel MOSFETs; no integrated load switch

LM74800 control schemeLinear V(A−C) regulation plus reverse-current comparator

LM74801 control schemeReverse-current comparator only; no linear forward-drop regulation

Forward-drop regulation10.5 mV typical; LM74800-Q1 only

Overvoltage responseHGATE cut-off; LM74800 common-source output-feedback clamp requires the specified external circuit and SOA review

Reverse-input protectionDown to −65 V with the specified external protection circuit

Orderable variants (OPNs)

The GPN is for selection; the full OPN is for ordering. These examples were observed on the verification date, not live stock. Variants may differ in package, temperature, gain/threshold and, for PMICs, NVM/sequencing. Distinguish TA from TJ in the exact datasheet.

OPN	Package	Temperature	Note
LM74800QDRRRQ1	WSON (DRR) · 12 pin	-40 to +125°C (TI OPN listing; verify TA/TJ)	Verify exact OPN, temperature definition and revision; not a stock claim.
LM74801QDRRRQ1	WSON (DRR) · 12 pin	-40 to +125°C (TI OPN listing; verify TA/TJ)	Verify exact OPN, temperature definition and revision; not a stock claim.

LM74800QDRRRQ1-40 to +125°C (TI OPN listing; verify TA/TJ)

WSON (DRR) · 12 pinVerify exact OPN, temperature definition and revision; not a stock claim.

LM74801QDRRRQ1-40 to +125°C (TI OPN listing; verify TA/TJ)

WSON (DRR) · 12 pinVerify exact OPN, temperature definition and revision; not a stock claim.

Official ordering page: https://www.ti.com/product/LM7480-Q1

Typical applications

12/24V ECU input reverse-polarity protection and overvoltage disconnectExternal-MOSFET redundant supply OR-ing and hold-up paths

FAQ

Do LM74800 and LM74801 both regulate the drop to 10.5mV?

No. LM74800-Q1 uses linear regulation plus a comparator and owns the 10.5mV typical regulation value. LM74801-Q1 uses a comparator-only scheme. Select the complete variant for reverse-current response and external MOSFET behavior, not just the family name.

Is it an integrated 300A switch that clamps overvoltage?

It is not an integrated 300A power stage; external MOSFETs, interconnect and cooling set load capability. Overvoltage response depends on topology: in the datasheet's LM74800 common-source application, VBATT feedback gives cutoff and VOUT feedback enables output clamping. Clamping requires rated external FETs, linear SOA, VS protection and thermal validation, not arbitrary variants or wiring.

How should I verify the LM7480-Q1 orderable?

The page lists 2 OPN examples from official material checked on 2026-11-06. Match package, function options and temperature definitions; obtain live price/stock from TI or authorized distributors.

Sources and verification

Related selection and design checks

All selection guides →What does TI Q1 mean →AEC-Q100 grades →Model Y TI BOM →

NuAxi is an independent semiconductor market-intelligence platform and is not affiliated with Texas Instruments. Information is for selection reference only and is not a design, certification or procurement guarantee; verify against TI's official datasheet, ordering page and terms.