National Semi Introduces Step-Down Switching Regulators

National Semiconductor Corp. has announced two step-down switching regulators well-suited for handheld devices and automotive power adapters. Suited for handheld devices and automotive power adapters, the Models LM34917A and LM34919 step-down regulators feature 1.25 A continuous output current, programmable switching frequency up to 2 MHz, intelligent current limiting, and over-voltage protection. Offered in 12-pin 2 x 2.3 mm micro SMD package, Model LM34917A supplies up to 1.25 A to load and contains N-Channel MOSFET buck switch. Supplying up to 0.6 A to load, Model LM34919 comes in 10-pin, 1.5 x 2 mm micro SMD package. Available now, the LM34917A is priced at $1.35 each and the LM34919 is priced at $1.05 each. All prices are in 1,000-unit quantities.