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

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  • 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)

Sample & Buy

Part Number
Package
Packing Type
Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
Order from Distributors
Order from ST
ST2S06A33PQR QFN12 4x4 Tape And Reel
Active
0.989 1000 EAR99 MALAYSIA No availability of distributors reported, please contact our sales office
ST2S06BPQR QFN12 4x4 Tape And Reel
Active
0.989 1000 EAR99 MALAYSIA No availability of distributors reported, please contact our sales office

ST2S06A33PQR

Package

QFN12 4x4

Packing Type

Tape And Reel

Unit Price (US$)

0.989*

Marketing Status

Active

Unit Price (US$)

0.989

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

ST2S06BPQR

Package

QFN12 4x4

Packing Type

Tape And Reel

Unit Price (US$)

0.989*

Marketing Status

Active

Unit Price (US$)

0.989

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

(*) 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

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Technical Documentation

    • Description Version Size Action
      DS5452
      Dual synchronous rectification with reset or inhibit, 0.5 A, 1.5 MHz adjustable step-down switching regulator
      6.0
      333.47 KB
      PDF
      DS5452

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

Publications and Collaterals

    • Description Version Size Action
      Brochure Power management guide 10.2018
      4.42 MB
      PDF
      Electric vehicle (EV) ecosystem 1.1
      1.28 MB
      PDF
      Switching Converters (DC-DC) – Quick Reference Guide 1.0
      481.92 KB
      PDF

      Brochure Power management guide

      Electric vehicle (EV) ecosystem

      Switching Converters (DC-DC) – Quick Reference Guide

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
ST2S06A33PQR
Active
QFN12 4x4 Industrial Ecopack2
ST2S06BPQR
Active
QFN12 4x4 Industrial Ecopack2

ST2S06A33PQR

Package:

QFN12 4x4

Material Declaration**:

Marketing Status

Active

Package

QFN12 4x4

Grade

Industrial

RoHS Compliance Grade

Ecopack2

ST2S06BPQR

Package:

QFN12 4x4

Material Declaration**:

Marketing Status

Active

Package

QFN12 4x4

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) 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.