The ST8R00 is a synchronous PWM step-up DC-DC converter. The device is able to provide an output voltage in the range of 6 to 12 V with an input voltage from 4 to 6 V. The high switching frequency (1.7 MHz) permits the use of tiny surface-mount components. In addition to the resistor divider to set the output voltage value, only an inductor and two capacitors are required. Moreover, a low output ripple is guaranteed by the current mode PWM topology and by the use of low ESR SMD ceramic capacitors. The device is available in a very small DFN8 (4 x 4 mm) package.

Key Features

  • Output voltage adjustable from 6 V to 12 V
  • Output voltage accuracy: ± 2%
  • Output current up to 1 A
  • Low ripple voltage: 5 mV (typ.)
  • Synchronous rectification
  • High 90% efficiency: VO = 9 V (typ.)
  • Few external components
  • Thermal shutdown protection
  • Very small DFN8 (4 x 4 mm) package

Circuit Diagram

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Technical Documentation

Product Specifications
Description Version Size
DS5243 DS5243: Micropower 1 A synchronous step-up DC-DC converter 2.0 764 KB
Application Notes
Description Version Size
AN2627 AN2627: ST8R00 syncronous boost converter with output current cut-off function 2.1 327 KB
Design Notes & Tips
Description Version Size
DN0010 DN0010: Adapting ST power line modem evaluation boards to communicate over a DC bus 1.1 405 KB

Publications and Collaterals

Description Version Size
Brochure Power management guide 05.2016 3 MB
eDesignSuite Support & Community

Sample & Buy

Part Number Package Packing Type Operating Temperature (°C) (min) Operating Temperature (°C) (max) Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
ST8R00WPUR VFDFPN 8 4x4x1.0 Tape And Reel -25 125 Active 0.769 1000 NEC EAR99 MALAYSIA MORE INFO No availability reported, please contact our Sales office
ST8R00 - - - - Proposal - - - - - MORE INFO No availability reported, please contact our Sales office

(*) 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

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
ST8R00WPUR ActiveVFDFPN 8 4x4x1.0IndustrialEcopack2 0 0
ST8R00 Proposal - Industrial -

(**) The Material Declaration forms available on st.com 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.