1 A high efficiency single inductor DC-DC converter
Features
■ Buck-boost DC-DC converter
■ Operating input voltage range: 2.0 V to 5.5 V
■ 2% DC feedback voltage tolerance
■ Synchronous rectification
■ Shutdown function
■ 1.5 MHz switching frequency
■ Power save mode at light load
■ Typical efficiency: > 94%
■ 1 A output current capability
■ Shutdown current < 1 µA
■ RoHS compliant
STEVAL-ISA063V1
based on the STBB1XX
Data brief
STEVAL-ISA063V1
AM03157
Description
The STEVAL-ISA063V1 demonstration board
represents a typical buck-boost DC-DC converter
application, intended to demonstrate the function
and performance of the STBB1XX device. The
STBB1XX is a fixed frequency, high efficiency DcDC converter capable of providing output voltages
ranging from 1.2 V to 5.5 V, and input voltages
from 2.0 V to 5.5 V.
The STBB1XX device can operate with input
voltages higher than, equal to, or lower than the
output voltage, making the product suitable for
single Li-ion, multi-cell alkaline or NiMH batterypowered applications where the output voltage is
within the battery voltage range. The integrated
low RDS
switches contribute to the high efficiency of the
STBB1XX device.
N-channel and P-channel MOSFET
ON
June 2009 Doc ID 15887 Rev 1 1/4
For further information contact your local STMicroelectronics sales office.
www.st.com
4
Schematic circuit STEVAL-ISA063V1
1 Schematic circuit
Figure 1. Schematic diagram
2/4 Doc ID 15887 Rev 1
AM03158
STEVAL-ISA063V1 Revision history
2 Revision history
Table 1. Document revision history
Date Revision Changes
15-Jun-2009 1 Initial release.
Doc ID 15887 Rev 1 3/4
STEVAL-ISA063V1
y
y
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