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TC4427 Dual MOSFET Driver

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by Ray

Dual 1.5 A high-speed non-inverting MOSFET gate driver.

gate-drivermosfet-driverdualnon-invertingmicrochipsoic-8
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TC4427

Microchip · Gate Driver · SOIC-8

The TC4427 is a dual high-speed MOSFET gate driver that sources and sinks up to 1.5 A to drive power-MOSFET gates quickly. Its two non-inverting channels charge a 1000 pF gate in under 30 ns, buffering weak logic outputs to switch power stages, motor drivers, and switching supplies. Inverting (TC4426) and complementary (TC4428) versions share the family.

Pinout

Pin Name Type Function
1 NC unconnected No internal connection. Leave floating or tie to a convenient net.
2 IN_A input Non-inverting logic input for channel A driver. VIH ≥ 2.4V, VIL ≤ 0.8V, IIN ±1 µA typical; withstands negative inputs down to VDD+0.3V / (GND-5V). Ground any unused driver input.
3 GND power_in Device ground. Common return for logic and the high-current MOSFET output stage; requires a low-inductance path to the source of the driven power MOSFET.
4 IN_B input Non-inverting logic input for channel B driver. Same electrical characteristics as IN A (VIH ≥ 2.4V, VIL ≤ 0.8V). Ground if unused.
5 OUT_B output Non-inverting high-current gate-drive output for channel B. 1.5A peak, ~7Ω output impedance, VOH ≈ VDD-0.025V, VOL ≈ 0.025V. Sources/sinks gate charge to switch a power MOSFET.
6 VDD power_in Positive supply, 4.5V to 18V (22V absolute max). Bypass locally with a low-ESR capacitor sized for the gate charge being switched, since peak output current is 1.5A.
7 OUT_A output Non-inverting high-current gate-drive output for channel A. 1.5A peak, ~7Ω output impedance, VOH ≈ VDD-0.025V, VOL ≈ 0.025V.
8 NC unconnected No internal connection. Leave floating or tie to a convenient net.

Key specifications

Parameter Value
Type Dual non-inverting MOSFET gate driver
Peak output current 1.5 A source/sink
Supply voltage 4.5 V to 18 V
Rise/fall time <30 ns into 1000 pF
Propagation delay 30 ns typ
Operating temperature -40 C to 85 C

Ordering variants

Same part, different packaging or reel option.

  • TC4427OA
  • TC4427EOA
  • TC4427VOA
  • TC4427CPA
  • TC4427EPA
  • TC4427VPA
  • TC4427CUA
  • TC4427EUA
  • TC4427VUA
  • TC4427CMF
  • TC4427EMF
  • TC4427VMF

CAD (KiCad official)

  • Symbol: tc4427.kicad_sym
  • Footprint: tc4427.kicad_mod
  • 3D model: SOIC-8 body from KiCad Package_SO/SOIC-8_3.9x4.9mm_P1.27mm.

Provenance

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

  • Datasheet: Microchip datasheet (28 pp, sha256 4704cae2316fdff9, retrieved 2026-08-17, tier: manufacturer)
  • 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