AO4430, AO4430L are N-channel enhancement mode field effect transistors from Alpha & Omega Semiconductor, Ltd. Their maximum voltage is 30V, maximum current is 18A, and ON-resistance is less than 5.5mΩ (VGS = 10V), less than 7.5mΩ (VGS = 4.5V). AO4430L is offered in a lead free package.
The AO4430 and AO4430L are N‑Channel enhancement mode field‑effect transistors designed for low‑side switching in notebook CPU core power conversion. They feature advanced trench technology, low on‑resistance, and a lead‑free package for the AO4430L variant.
Key electrical specifications include a maximum drain‑source voltage of 30 V, continuous drain current of 18 A, and on‑resistance below 5.5 mΩ at VGS = 10 V. Thermal characteristics provide a junction‑to‑ambient resistance of about 31 °C/W and a maximum operating temperature of 150 °C.
| Drain‑Source Voltage (VDS) | 30 V |
|---|---|
| Gate‑Source Voltage (VGS) | ±20 V |
| On‑Resistance (RDS(on)) at VGS=10 V | < 5.5 mΩ |
| On‑Resistance (RDS(on)) at VGS=4.5 V | < 7.5 mΩ |
| Power Dissipation (PD) at 25 °C | 3 W |
| Junction‑to‑Ambient Thermal Resistance (RθJA) | ≈31 °C/W |
The device is rated for a maximum drain‑source voltage of 30 V.
The on‑resistance is less than 5.5 mΩ when VGS is 10 V.
Yes, the AO4430L is offered in a lead‑free package.