Datasheet

Data brief

For further information contact your local STMicroelectronics sales office.

June 2009 Doc ID 15887 Rev 1 1/4

STEVAL-ISA063V1

1 A high efficiency single inductor DC-DC converter

based on the STBB1XX

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

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 Dc-

DC 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 battery-

powered applications where the output voltage is

within the battery voltage range. The integrated

low RDS

N-channel and P-channel MOSFET

switches contribute to the high efficiency of the

STBB1XX device.

STEVAL-ISA063V1

AM03157

ww w.st.com

Obsolete Product(s) - Obsolete Product(s)

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STEVAL-ISA063V1 1 A high efficiency single inductor DC-DC converter based on the STBB1XX Data brief 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.
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Schematic circuit 1 STEVAL-ISA063V1 Schematic circuit Figure 1.
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STEVAL-ISA063V1 2 Revision history Revision history Table 1. Document revision history Date Revision 15-Jun-2009 1 Changes Initial release.
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STEVAL-ISA063V1 ) s ( ct Please Read Carefully: u d o Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. r P e All ST products are sold pursuant to ST’s terms and conditions of sale.