Datasheet

October 2012 Doc ID 023760 Rev 1 1/4
4
STEVAL-ISA109V1
800 mA, 3 MHz, high efficiency dual mode buck-boost DC-DC
converter 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-ISA109V1 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 pre-mounted with the
adjustable version of the STBB2, 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 Ω resistor and disconnecting R
2
.
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