Dual synchronous rectification with reset or inhibit, 0.5 A, 1.5 MHz adjustable step-down switching regulator

The ST2S06A33 and ST2S06B are dual step-down DC-DC converters optimized for powering low-voltage digital cores in ODD applications and, generally, to replace high current linear solutions when the power dissipation may cause high heating of the application environment. It provides up to 0.5 A over an input voltage range of 2.5 V to 5.5 V.

A high switching frequency of 1.5 MHz allows the use of tiny surface-mount components as well as a resistor divider to set the output voltage value. Only an inductor and two capacitors are required. A low output ripple is guaranteed by the current mode PWM topology and the utilization of low ESR SMD ceramic capacitors. The devices are thermally protected and current-limited to prevent damage due to accidental short-circuit. The ST2S06A33 and ST2S06B are available in the QFN12L (4x4 mm) package.

Key Features

  • Step-down current mode PWM (1.5 MHz) DC-DC converter
  • Fixed or adjustable output voltage from 0.8 V
  • 2% DC output voltage tolerance
  • Synchronous rectification
  • Reset function for A version
  • Inhibit function for B version
  • Internal soft start for startup current limitation and power ON delay of 50-100 μs
  • Typical efficiency: > 90%
  • 0.5 A output current capability
  • Non-switching quiescent current: max 1.2 mA over temperature range
  • RDS(ON) 150 mΩ (typ.)
  • Uses tiny capacitors and inductors
  • Available in QFN12L (4x4 mm)

Resources

Technical Documentation

Product Specifications
Description Version Size
DS5452 DS5452: Dual synchronous rectification with reset or inhibit, 0.5 A, 1.5 MHz adjustable step-down switching regulator 6.0 333 KB

Publications and Collaterals

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


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
ST2S06A33PQR VFQFPN 12 4x4x1.0 Tape And Reel Active 0.989 1000 NEC EAR99 MALAYSIA MORE INFO DISTRIBUTOR AVAILABILITY
ST2S06BPQR VFQFPN 12 4x4x1.0 Tape And Reel Active 0.989 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**
ST2S06A33PQR ActiveVFQFPN 12 4x4x1.0IndustrialEcopack2
ST2S06BPQR ActiveVFQFPN 12 4x4x1.0IndustrialEcopack2
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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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