Summit Combines Digital Power Management and Battery Charging
Summit Microelectronics has announced the SMB118 that integrates six precision programmable regulators and programmable battery charging to reduce system size and cost in portable consumer electronics. Like the previously announced SMB122, the SMB118 combines analog power regulation and programmable digital power management, providing design flexibility for parametric adjustment and functional configuration.
Summit's easy-to-use PC-based graphical development environment allows system designers to digitally program the entire multiple output power supply and associated power management functions with a few clicks of a mouse. In high-volume production Summit provides product that is pre-programmed with the customer's "custom configuration" at no extra cost. Compared to inflexible conventional analog power ICs, the SMB118 yields optimized power system designs in significantly less development time.
The SMB118 provides digital power management via an I2C interface and non-volatile memory allowing the user to configure power functions and parameters for each channel: individual channel enabling/disabling, power-up/down sequencing, power-up slew rate control, static and dynamic output voltage control (Dynamic Voltage Management). A broad range of intelligent power system diagnostics and monitoring functions are also provided, which can be easily accessed via the I2C serial interface. These include input and output monitoring for under/over-voltage/over-current (UV/OV/OC), integrated RESET control, low/missing battery detection and AC/DC battery detection.
"The SMB118 Programmable Power Manager further extends Summit's leadership in programmable power management, providing an ideal solution for applications that require both high-performance power regulation and sophisticated digital power control," stated Abid Hussain, Summit director of marketing. "The integration of regulators and programmable battery charging in a space-saving 7mm x 7mm QFN package makes the SMB118 a complete, one-chip, solution for today's feature-packed, space-constrained designs. "
The SMB118 incorporates three synchronous step-down converters, one step-up converter, one configurable step-up or step-down converter, and one low-dropout linear regulator. Also included is a fully programmable battery charger for single-cell Li-Ion and Li-Polymer cells. All charging parameters are configurable, enabling the utilization of a wide variety of battery packs without hardware changes.
Available now in production quantities, the device is priced at $4.89 each in quantities of 10,000 units.
