The TC4421/TC4422 are high current buffers / drivers that can drive large power MOSFETs and IGBTs. They feature high peak output current, wide input supply voltage operating range, fast rise and fall times, short transmission delay time, low supply current, low output impedance, latch-up protection, negative input and space-saving 8-pin 6x5 DFN package.
The TC4421 and TC4422 are high‑speed MOSFET driver ICs that can source up to 9 A peak output current and sustain 2 A continuous output. They operate from a 4.5 V to 18 V supply and include built‑in protection features such as reverse‑current tolerance and low input leakage.
The devices are offered in several packages (8‑pin PDIP, 8‑pin DFN, 5‑pin TO‑220, SOIC) and are suitable for driving large‑power MOSFETs and IGBTs in applications requiring fast rise/fall times and low output resistance. This manual is written in Chinese.
| Peak Output Current | 9 A |
|---|---|
| Continuous Output Current | 2 A (max) |
| Input Voltage Range | 4.5 V – 18 V |
| Propagation Delay (4700 pF load) | 30 ns |
| Propagation Delay (47000 pF load) | 180 ns |
| Output Resistance (typical) | 1.4 Ω |
| Reverse Current Capability | 1.5 A |
| Input Leakage Current (typical) | 200 nA |
| Operating Temperature Range | -40 °C – +125 °C |
The driver can source a peak output current of 9 A.
It operates from 4.5 V up to 18 V.
The typical output resistance is 1.4 Ω.