ST Life.augmented


1 A, high efficiency single inductor DC-DC converter based on the STBB1-APUR
  • active Active

The STEVAL-ISA063V2 demonstration board implements a typical buck-boost DC-DC converter based on STMicroelectronics’ STBB1-APUR high efficiency single inductor dual mode buck-boost DC-DC converter.

The device is fixed frequency and 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 STBB1-APUR can operate with input voltages higher than, equal to, or lower than the output voltage, rendering the product suitable for single lithium-ion (Li-Ion), multicell alkaline or NiMH applications where the output voltage is within the battery voltage range.

The integrated low-RDSonN-channel and P-channel MOSFET switches contribute to its high efficiency.

pdf Download
Data Brief

Key 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 ÎĽA
  • RoHS compliant


Design Resources


Technical Documentation

Product Specifications

Description Version Size
DB1508: 1 A, high efficiency single inductor DC-DC converter based on the STBB1-APUR
1.1 77 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
STEVAL-ISA063V2 gerber files
1.0 31 KB

Bill of Materials

Description Version Size
1.0.0 55 KB
1.0 55 KB

Schematic Pack

Description Version Size
STEVAL-ISA063V2 schematics
1.0.0 25 KB
STEVAL-ISA063V2 schematics
1.0 25 KB

Sample & Buy

Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-ISA063V2ActiveSTBB1-APURBuy Direct41.65Distributor reported inventory date: 2015-05-25
Distributor NameRegionStockMin. order

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Feedback Form
Customer Feedback