International Rectifier introduces four new 12V HEXFET® power MOSFETs optimized for low input voltage (typically 3.3V and 5V) point-of-load (POL) buck converters. The new MOSFETs deliver up to 15% higher current handling capability when compared to industry standard 30V devices. Typical applications include POL buck converters for telecom and datacom systems, desktop computers, servers and game consoles.
The IRF7476, IRF7475, IRLR3802 and IRLU3802 N-channel MOSFETs and the IRF7910 dual N-channel MOSFET have been optimized for low device on-resistance and low gate charge to minimize both conduction and switching losses.
In low input voltage POL buck converters, the duty cycles of the synchronous and control MOSFETs are similar, usually higher than 30%. Therefore, the control and synchronous MOSFETs can have similar specifications to minimize conduction and switching losses at the same time. For load current applications up to 6A, separate control and synch MOSFETs can be replaced with a single IRF7910 dual MOSFET, saving board space. For applications up to 10A, use two IRF7476 or IRF7475 MOSFETs, and use the IRLR3802 for up to 12A circuits.
New International Rectifier 12V N-Channel HEXFET® MOSFETs
| Part Number | BVDSS | VGS | RDS(on) max @4.5V | RDS(on) max @2.8V | QG typ @50% VDS | QGD typ | Package |
| IRF7910 | Dual 12V | 12V | 15mW | 50mW | 17nC | 5.2nC | SO-8 |
| IRF7476 | 12V | 12V | 8.0mW | 30mW | 26nC | 11nC | SO-8 |
| IRF7475 | 12V | 12V | 15mW | 50mW | 13nC | 3.9nC | SO-8 |
| IRLR3802 | 12V | 12V | 8.5mW | 30mW | 27nC | 10nC | D-Pak |
| IRLU3802 | 12V | 12V | 8.5mW | 30mW | 27nC | 10nC | I-Pak |
Pricing and Availability
The new 12V MOSFETs are available immediately. Pricing for the IRF7910 is US $0.42 each, the IRF7476 is US $0.40 each, the IRF7475 is US $0.32 each and the IRLR3802 and IRLRU3802 is US $0.42 each, in 10,000-unit quantities.
