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LM74700QDBVRQ1

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by Ray

Texas Instruments AC-DC Controllers and Regulators, SOT-23-6. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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LM74700QDBVRQ1

Texas Instruments · AC-DC Controllers and Regulators · SOT-23-6

LM74700QDBVRQ1 from Texas Instruments, in a SOT-23-6. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VCAP power_out Charge pump output. Connect an external charge pump capacitor (0.1 µF, VCAP to ANODE) that provides the boosted gate drive rail for the external N-channel MOSFET.
2 GND power_in Device ground pin. Reference for internal circuitry and control logic.
3 EN input Active-high enable input. Drive high (or tie to ANODE) for always-on operation; drive low to shut down the controller (~1 µA IQ). Rated -0.3 V to 65 V relative to GND when V(ANODE) > 0.
4 CATHODE input Cathode sense of the ideal diode. Connect to the drain of the external N-channel MOSFET (the load-side terminal). Used to sense forward drop for 20 mV regulation and reverse-current detection.
5 GATE output Gate drive output for the external N-channel MOSFET. Sources charge-pumped voltage to enhance the FET during forward conduction and rapidly pulls the gate low (2.3 A peak turn-off) when reverse current is detected. GATE-to-ANODE clamp limits VGS to 15 V max.
6 ANODE power_in Anode of the ideal diode and device input supply. Connect to the source of the external N-channel MOSFET and to the input rail (3.2 V to 65 V). Requires 22 nF external capacitance to GND.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOT-23-6
Category PMIC
Pins 6

Ordering variants

Same part, different packaging or reel option.

  • LM74700QDBVRQ1
  • LM74700QDBVRQ1DDFR

CAD (KiCad official)

  • Symbol: LM74700QDBVRQ1
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
lm74700qdbvrq1.step 97 KB You want the bare part, or you mark your own boards.
lm74700qdbvrq1-etched.step 2.3 MB You want the part with LM74700QDBVRQ1 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 589 faces against 117 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (36 pp, sha256 59c554056e8d2808, retrieved 2026-08-17, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF