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TC4427AEOA

Public Made by Adom

by adom

Microchip Tech Gate Drivers, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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TC4427AEOA

Microchip Tech · Gate Drivers · SOIC-8

TC4427AEOA from Microchip Tech, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 NC unconnected No connection on the SOIC package.
2 IN A input MOSFET driver input A is a high-impedance TTL/CMOS compatible input with 300 mV hysteresis, and its voltage must stay between (VDD + 0.3V) and (GND - 5V); ground it if the driver is unused.
3 GND power_in Ground is the return path for both bias current and the high peak discharge current and should be tied to a ground plane or a very short trace to the bias supply return.
4 IN B input MOSFET driver input B is a high-impedance TTL/CMOS compatible input with 300 mV hysteresis, and its voltage must stay between (VDD + 0.3V) and (GND - 5V); ground it if the driver is unused.
5 OUT B output MOSFET driver output B is a low-impedance CMOS push-pull output with pull-down and pull-up devices of equal strength.
6 VDD power_in Bias supply input for the driver, rated 4.5V to 18V with respect to the ground pin, and should be bypassed with local ceramic capacitors.
7 OUT A output MOSFET driver output A is a low-impedance CMOS push-pull output with pull-down and pull-up devices of equal strength.
8 NC unconnected No connection on the SOIC package.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package SOIC-8
Category Motor Driver ICs
Pins 8

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Supply Voltage 22 V 3
Storage Temperature Range TA -65 150 °C 4
Maximum Junction Temperature TJ 150 °C 4
Supply Voltage VDD 4.5 18 V Over operating temperature range 3
Specified Temperature Range (E) TA -40 85 °C 4
Logic '1', High Input Voltage VIH 2.4 V 3
Logic '0', Low Input Voltage VIL 0.8 V 3
Input Current IIN -1 1 μA 0V ≤ VIN ≤ VDD 3
Input Current (second printed pair) IIN -10 10 μA 0V ≤ VIN ≤ VDD 3
Low Output Voltage VOL 0.025 V DC Test 3
Output Resistance RO 8 11 Ω IOUT = 10 mA, VDD = 18V, -40°C ≤ TA ≤ +85°C 3
Latch-Up Protection Withstand Reverse Current IREV 0.5 A Duty cycle ≤ 2%, t ≤ 300 μsec, VDD = 18V 3
Rise Time tR 29 40 ns -40°C ≤ TA ≤ +85°C 3
Fall Time tF 29 40 ns -40°C ≤ TA ≤ +85°C 3
Delay Time tD1 tD1 35 45 ns -40°C ≤ TA ≤ +85°C 3
Delay Time tD2 tD2 35 45 ns -40°C ≤ TA ≤ +85°C 3
Power Supply Current (both inputs high) IS 1 2 mA VIN = 3V (Both inputs) 3
Power Supply Current (both inputs low) IS 0.1 0.2 mA VIN = 0V (Both inputs), VDD = 18V 3
Thermal Resistance, 8L-SOIC θJA 155 °C/W 4

CAD (KiCad official)

  • Symbol: TC4427AEOA
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: tc4427aeoa-etched.step / tc4427aeoa-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tc4427aeoa.step / tc4427aeoa.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (18 pp, sha256 0dff44adc4a1c918, retrieved 2026-10-18, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF