Power Electronics

Voltage Sequencer Includes Non-Volatile Programming

Summit Microelectronics SMS11 is a device in a family of programmable monitor/sequencer/reset ICs, designed for communication and consumer electronics applications. With non-volatile programmability, the SMS11 addresses virtually any multi-output power supply application that requires monitoring and sequencing.

The SMS11 combines a precision four-input voltage monitor with a four-output power supply sequencer and reset controller. Input voltage thresholds are fully programmable, as are output sequence order and timing delays. The global RESET output is provided to signal completion of the sequencing routine and can be directly interfaced to system logic.

Also programmable are the sequence ENABLE output polarity and the RESET output behavior. SMS11's programmability addresses dozens of parametric combinations without any hardware changes to the system. This feature simplifies and speeds up development while reducing total system component count, size and cost compared to conventional solutions using external resistors and capacitors for programming.

The SMS11 operates from +2.7 V to +5.5 V (RESET output valid at 1.0 V) and typically consumes 200 mA. The SMS11 is packaged in an 8-ball 1.4 mm x 2.5 mm CSP package. An 8-lead SOIC package is also available

Available now in production quantities, the SMS11 is priced at $0.88 each in quantities of 10,000 units for the CSP package and at $2.00 each in quantities of 1000 units for the SOIC package.

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