National Semiconductor Introduces Industry’s Smallest 1A, 4 MHz Synchronous Step-Down DC-DC Converter for Portable Applications

National Semiconductor Introduces Industry's Smallest 1A, 4 MHz Synchronous Step-Down DC-DC Converter for Portable Applications

National Semiconductor Corp. (NYSE:NSM) today introduced the industry’s smallest 4 MHz synchronous step-down DC-DC converter that provides up to a 1A output current over an input voltage range of 2.3V to 5.5V.  The LM3691 DC-DC converter is optimized for powering high-performance processors from a single Li-Ion cell battery in mobile phones, personal media players and other mobile devices.

PowerWise DC-DC Converter Features ±1 Percent Output Voltage Precision, 95 Percent Peak Efficiency and Excellent Transient Performance

A member of National’s PowerWise® energy-efficient product family, the LM3691 features peak efficiency of 95 percent, low quiescent current to maximize battery life and output voltage precision of ±1 percent to power baseband and next-generation applications processors.

National’s new LM3691 DC-DC converter is offered in a micro SMD package and features high switching frequency up to 4 MHz that enables use of miniature 1 uH multilayer inductors and tiny 4.7 uF capacitors for a solution size of less than 15 mm squared.  Several fixed output voltage options are also available.