Synchronous rectification with inhibit, 1.5 A, 1.5 MHz adjustable, step-down switching regulator

The ST1S06 is a step down DC-DC converter optimized for powering low-voltage digital core in HDD applications and, generally, to replace the high current linear solution when the power dissipation may cause an high heating of the application environment. It provides up to 1.5 A over an input voltage range of 2.7 V to 6 V. An high switching frequency (1.5 MHz) allows the use of tiny surface-mount components: as well as the resistor divider to set the output voltage value, only an inductor and two capacitors are required. Besides, 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 thermal protected and current limited to prevent damages due to accidental short circuit. The ST1S06 is available in DFN6D 3x3 package.

Key Features

  • Uses tiny capacitors and inductors
  • RDS(ON) typ150mΩ
  • Available in DFN6 3x3 exposed pad
  • Operative junction temp. -30°C to 125°C
  • 1.5A Output current capability
  • Typical efficiency:> 90%
  • Step-down current mode PWM (1.5MHz) DC-DC converter
  • Synchronous rectification
  • 2% DC output voltage tolerance
  • Internal soft start
  • Not switching quiescent current: max 1.5mA over temperature range
  • Inhibit function

Circuit Diagram

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Resources

Technical Documentation

Product Specifications
Description Version Size
DS4693 DS4693: Synchronous rectification with inhibit, 1.5 A, 1.5 MHz fixed or adjustable, step-down switching regulator 9.1 422 KB
Application Notes
Description Version Size
AN2371 AN2371: ST1S06 high frequency synchronous buck converter 2.2 172 KB

Publications and Collaterals

Brochures
Description Version Size
Brochure Power management guide 09.2017 3 MB

Tools and Software

Evaluation Tools
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Sample & Buy

Part Number Package Packing Type Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
ST1S06PUR DFN6 3x3 Tape And Reel Active 0.514 1000 NEC EAR99 PHILIPPINES MORE INFO DISTRIBUTOR AVAILABILITY
ST1S06PU12R DFN6 3x3 Tape And Reel Active 0.571 1000 NEC EAR99 MALAYSIA MORE INFO DISTRIBUTOR AVAILABILITY
ST1S06PU33R DFN6 3x3 Tape And Reel Active 0.571 1000 NEC EAR99 MALAYSIA MORE INFO DISTRIBUTOR AVAILABILITY
ST1S06APUR DFN6 3x3 Tape And Reel Active 0.571 1000 NEC EAR99 MALAYSIA MORE INFO DISTRIBUTOR AVAILABILITY
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(*) 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**
ST1S06PUR ActiveDFN6 3x3IndustrialEcopack2 0 0
ST1S06PU12R ActiveDFN6 3x3IndustrialEcopack2
ST1S06PU33R ActiveDFN6 3x3IndustrialEcopack2 0 0
ST1S06APUR ActiveDFN6 3x3IndustrialEcopack2 0 0
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(**) 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.

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