STMicroelectronics 800 mA, 3 MHz, high efficiency dual mode buck-boost DC-DC converter based on the STBB2 STEVAL-ISA109V STEVAL-ISA109V1 Data Sheet

October 2012

Doc ID 023760 Rev 1

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800 mA, 3 MHz, high efficiency dual mode buck-boost  DC-DC

converter based on the STBB2

■

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

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

.