International Rectifier's New SO-8 FETKYsTM Offer a Simplified Circuit Layout and Reduced Footprint
"New SO-8 FETKYs offer significant reduction in board space precious for handheld electronics and provide design flexibility and
lower assembly costs," says Srini Thiruvenkatachari, product marketing engineer at International Rectifier.
EL SEGUNDO, CA. January 1998 International Rectifier (IR), the leading supplier of advanced power semiconductors, has expanded their SO-8 FETKYTM product
line with the addition of three new devices. These new FETKYs combine a P-channel HEXFETź power MOSFET and a Schottky diode in a single
package, providing a space savings of 50-70% over a discrete design. This space reduction is critical to handheld portable electronics where board space
is at a premium. The MOSFET and the Schottky diode are electrically isolated to provide design flexibility.
The SO-8 FETKY specifications are listed in the table below:
| Part Number |
Rating |
HEXFET |
RDS(on) |
ID |
Schottky |
| IRF7321D2 |
-30V |
P-channel |
58mW@-10V |
-5.3A@25șC |
0.5V, 3A |
| IRF7322D1 |
-20V |
P-channel |
58mW@-4.5V |
-5.0A@25șC |
0.5V, 1.5A |
| IRF7324D1 |
-20V |
P-channel |
90mW@-4.5V |
-3.9A@25șC |
0.5V, 1.5A |
The most important challenge for high-density power converter designers is providing a system with maximum efficiency at a minimum cost. The
SO-8 FETKY, consisting of a low RDS(on) Generation 5 MOSFET and a low VF Schottky rectifier, is ideal for DC-DC converters in portable electronic
devices. The 20 V P-channel MOSFET is capable of operating at gate voltages as low as 2.7 V. This makes the IRF7322D1 and IRF7324D1 ideal for
battery charge control circuits in cellular phones, replacing the discrete MOSFET and Schottky diode design typically used for this application. Other
compatible applications for the new FETKYs are in laptop computers, electronic shavers, LAN boards and other portable handheld equipment
in the 2 - 5 A range.
Samples of SO-8 FETKYs are available now and full-scale production will begin in March, 1998.
For more information:
Contact the Technical Assistance Center or
your local Sales Rep.
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