for further information contact your local stmicroelectronics sales office. april 2013 docid024566 rev 1 1/4 4 STEVAL-ISA109V2 800 ma, 3 mhz, adjustable output high efficiency dual-mode buck-boost dc-dc conver ter based on the stbb2 data brief features ? input voltage: from 2.3 v to 5.5 v ? output voltage: 3.3 v ? output current: 800 ma ? operating frequency: 3 mhz ? rohs compliant description the STEVAL-ISA109V2 is designed to aid in the evaluation of the stbb2, a high efficiency buck- boost dc-dc converter capable of providing regulated output voltages in the range of 1.2 v to 5.5 v with an input voltage between 2.3 v and 5.5 v. the board comes with the adjustable version of the stbb2 pre-mounted, with the output voltage set to 3.3 v. for this version, the v sel pin must be connected to v in . the board can also demonstrate the performance of the fixed version of the stbb2, by replacing r 1 with a 0 resistor and disconnecting r 2 . www.st.com
schematic diagram STEVAL-ISA109V2 2/4 docid024566 rev 1 1 schematic diagram figure 1. STEVAL-ISA109V2 circuit schematic
docid024566 rev 1 3/4 STEVAL-ISA109V2 revision history 2 revision history table 1. document revision history date revision changes 16-apr-2013 1 initial release.
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