NSC device contains n-channel power MOSFET

National Semiconductor Corp. (NSC) has released what it claims to be the industry's smallest high-voltage Buck bias switching regulator to satisfy bias power requirements in next-generation communications, automotive, and 48V distributed and battery-powered systems.

The LM5007 is a buck bias regulator that steps down a high voltage (up to 75V) primary-side power supply and produces a low voltage (10V typical) bias supply for secondary-side control devices. The device contains an 80V n-channel power MOSFET rated at 0.7A peak that can be switched at high frequencies of up to 500kHz to allow the use of a small output filter to complete a highly efficient cost-effective bias supply solution that sources up to 0.5A continuous load current in minimal PCB space.

Offered in a 4-by-4mm 8-pin LLP chip-scale package and an MSOP-8 package, the product is priced at $1.05 each in 1,000-unit quantities.