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LM3478QMMX/NOPB AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

LM3478QMMX/NOPB product

LM3478QMMX/NOPB

DC DC Switching Controllers

AEC-Q100Current-mode PWMLow-side N-MOSFET controllerBoostSEPICFlybackVSSOP-8

LM3478QMMX/NOPB is an automotive-qualified current-mode controller for low-side external N-MOSFET boost, flyback, and SEPIC power stages.

Best for

  • Automotive-qualified boost, flyback, and SEPIC controllers
  • Applications requiring external MOSFET selection and current-limit programming
  • Input rails from 2.97 V to 40 V

Avoid if

  • A fully integrated power stage is required
  • The design cannot accommodate external current sensing and compensation
  • Required switching frequency is outside 100 kHz to 1 MHz

Check before use

  • Confirm the external MOSFET is suitable for the DR pin gate-drive voltage.
  • Set RSEN with duty-cycle-dependent current-limit behavior considered.
  • Keep high-current switching loops and ISEN routing short to reduce noise.

Key specifications

Input voltage
2.97 V to 40 V
Switching frequency
100 kHz to 1 MHz
Package
VSSOP-8
Qualification
AEC-Q100
Feedback reference
1.26 V typical

Compliance & Environment

RoHS
ROHS3 Compliant
REACH
-
MSL
MSL 1, 260 °C, unlimited floor life
ECCN
-
HTSUS
-

Application

Automotive power conversionBoost and SEPIC convertersBattery chargersDistributed power systems

Datasheet

Texas-Instruments-company-64.pdf

800 KB

Datasheet AI

CAD Models

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Where to Buy

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Alternative components

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Design and risk insights

Questions & answers

LM3478QMMX/NOPB is a Texas Instruments AEC-Q100 qualified fixed-frequency PWM current-mode controller. It drives an external low-side N-channel MOSFET and is supplied in an 8-pin VSSOP package.