component
TC4427ACOA
Public Made by Adomby adom
Microchip Tech Gate Drive ICs, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownTC4427ACOA
Microchip Tech · Gate Drive ICs · SOIC-8
TC4427ACOA 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. |
| 2 | IN A | input | Driver A input, high-impedance TTL/CMOS compatible with 300 mV hysteresis between the high and low thresholds; ground if unused. |
| 3 | GND | power_in | Ground, return path for both the bias current and the high-peak current that discharges the external load capacitance; tie to a ground plane or use a very short trace. |
| 4 | IN B | input | Driver B input, high-impedance TTL/CMOS compatible with 300 mV hysteresis between the high and low thresholds; ground if unused. |
| 5 | OUT B | output | Driver B output, low-impedance CMOS push-pull style with equal-strength pull-up and pull-down devices (1.5A peak). |
| 6 | VDD | power_in | Supply input, bias supply rated 4.5V to 18V with respect to ground; bypass with local ceramic capacitors. |
| 7 | OUT A | output | Driver A output, low-impedance CMOS push-pull style with equal-strength pull-up and pull-down devices (1.5A peak). |
| 8 | NC | unconnected | No connection. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | SOIC-8 |
| Category | Power Supply Chip |
| 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 |
|---|---|---|---|---|---|---|---|
| High Input Voltage | VIH | 2.4 | V | over operating temperature range, 4.5V ≤ VDD ≤ 18V | 3 | ||
| Low Input Voltage | VIL | 0.8 | V | over operating temperature range, 4.5V ≤ VDD ≤ 18V | 3 | ||
| Input Current | IIN | -1 | 1 | µA | 0V ≤ VIN ≤ VDD | 3 | |
| High Output Voltage | VOH | -0.025 | V | DC Test; min printed as VDD, 0.025 | 3 | ||
| Low Output Voltage | VOL | 0.025 | V | DC Test | 3 | ||
| Output Resistance | RO | 7 | 10 | Ω | 0°C ≤ TA ≤ +70°C | 3 | |
| Rise Time | tR | 25 | 35 | ns | TA = +25°C, Figure 4-1 | 3 | |
| Rise Time | tR | 27 | 40 | ns | 0°C ≤ TA ≤ +70°C, Figure 4-1 | 3 | |
| Fall Time | tF | 25 | 35 | ns | TA = +25°C, Figure 4-1 | 3 | |
| Fall Time | tF | 27 | 40 | ns | 0°C ≤ TA ≤ +70°C, Figure 4-1 | 3 | |
| Delay Time | tD1 | 30 | 35 | ns | TA = +25°C, Figure 4-1 | 3 | |
| Delay Time | tD1 | 33 | 40 | ns | 0°C ≤ TA ≤ +70°C, Figure 4-1 | 3 | |
| Delay Time | tD2 | 30 | 35 | ns | TA = +25°C, Figure 4-1 | 4 | |
| Delay Time | tD2 | 33 | 40 | ns | 0°C ≤ TA ≤ +70°C, Figure 4-1 | 4 | |
| Power Supply Current | IS | 1 | 2 | mA | VIN = 3V (Both inputs) | 4 | |
| Power Supply Current | IS | 0.1 | 0.2 | mA | VIN = 0V (Both inputs), VDD = 18V | 4 | |
| Specified Temperature Range (C) | TA | 0 | 70 | °C | 4 | ||
| Maximum Junction Temperature | TJ | 150 | °C | 4 | |||
| Storage Temperature Range | TA | -65 | 150 | °C | 4 | ||
| Thermal Resistance, 8L-SOIC | θJA | 149.5 | °C/W | 4 | |||
| Supply Voltage | VDD | 22 | V | 3 | |||
| Input Supply Voltage Operating Range | VDD | 4.5 | 18 | V | with respect to ground pin | 8 | |
| Peak Output Current | IPK | 1.5 | A | VDD = 18V | 3 | ||
| Latch-Up Withstand Reverse Current | IREV | 0.5 | A | Duty cycle ≤ 2%, t ≤ 300 µs, VDD = 18V; printed as > 0.5 | 3 |
CAD (KiCad official)
- Symbol:
TC4427ACOA - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
tc4427acoa-etched.step/tc4427acoa-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tc4427acoa.step/tc4427acoa.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (26 pp, sha256
914979223ca0c5ae, retrieved 2026-10-24, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-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).