Summit Microelectronics Intros SMB120 DC-DC Converter
Summit Microelectronics Inc. (San Jose, CA) announced its new SMB120 nine-channel, programmable dc-dc converter, which is the first in a family of new devices optimized for complex consumer electronics applications such as digital still cameras/camcorders, DVD/MP3 players/recorders, hand-held and automotive GPS terminals, personal digital assistants, portable LCD TVs, as well as the next generation of smart mobile phones.
The SMB120 utilizes the I2C bus as a management bus, providing a digital, simple-to-use, GUI software-driven, programming interface. Capability includes the ability to independently sequence on/off each output with precisely controlled timing and slew rate, and program or arbitrarily adjust "on-the-fly" (margining) output voltages with ±0.5% accuracy.
The SMB120 incorporates a total of nine-channels of power conversion: four pulse-width modulated (PWM) dc-dc step-down (buck) converters, three PWM dc-dc step-up (boost) converters, one PWM dc-dc inverting step-up/down (buck/boost) converter, and one low-dropout linear LDO regulator. The SMB120 operates directly from a +2.7 V to +5.5 V input, making it suitable for one-cell, lithium-ion battery applications. Higher input voltages (two-cell, lithium-ion) can also be accommodated with simple applications configuration.
The operating temperature range is +0 °C to +70 °C, and is available in the 64-pad, QFN-64 package that is lead-free and RoHS-standard compliant. Available now in production quantities, the device is priced at $5.95 each in quantities of 1,000 units.
