2A, 2MHz, high efficiency dual mode buck-boost DC-DC converter

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  • The STBB3J is a fixed frequency, high efficiency, buck-boost DC-DC converter which provides output voltages from 1.2 V to 5.5 V starting from input voltage from 1.8 V to 5.5 V. The device can operate with input voltages higher than, equal to, or lower than the output voltage making the product suitable for cell lithium-Ion applications where the output voltage is within the battery voltage range. The low-RDS(on) N-channel and P-channel MOSFET switches are integrated and contribute to achieve high efficiency. The MODE pin allows the selection between auto mode and forced PWM mode, taking advantage from either lower power consumption or best dynamic performance.The device also includes soft-start control, thermal shutdown, and current limit. The STBB3J is packaged in Flip Chip 20 bumps with 2.5 x 1.75 mm.

    Key Features

    • Input voltage range from 1.8 V to 5.5 V
    • 2 A output current at 3.3 V in buck mode (VIN = 3.6 V to 5.5 V)
    • 800 mA output current at 3.3 V in boost mode (VIN 2.0 V)
    • Typical efficiency higher than 94%
    • ± 2% DC feedback voltage tolerance
    • Automatic transition between step-down and boost mode
    • Adjustable output voltage from 1.2 V to 5.5 V
    • Power save mode (PS) at light load
    • 2.0 MHz fixed switching frequency
    • Adjustable switching frequency up to 2.4 MHz (by external synchronous square signal)
    • Device quiescent current less than 50 μA
    • Load disconnect during shutdown
    • Shutdown function and soft-start
    • Shutdown current < 1 μA
    • Available in Flip Chip 20, pitch = 0.4 mm

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Part Number
Marketing Status
Quantity
Budgetary Price (US$)*
Package
Packing Type
Temperature (°C) ECCN (US)
More info
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min
max
STBB3JR
Active
10000 1.093 Flip Chip 20 Tape And Reel -40 85 EAR99
MORE INFO

Country of Origin:

CHINA

Check Availability

Distributor availability ofSTBB3JR

Distributor Name
Region Stock Min. Order Third party link
Farnell Element14 EUROPE 5268 1 Order Now

Distributor reported inventory date: 2019-08-21

Distributor Name

Farnell Element14

Stock

5268

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-08-21

Get sample

STBB3JR

Marketing Status

Active

Quantity

10000

Unit Price (US$)

1.093*

Distributor availability ofSTBB3JR

Distributor Name
Region Stock Min. Order Third party link
Farnell Element14 EUROPE 5268 1 Order Now

Distributor reported inventory date: 2019-08-21

Distributor Name

Farnell Element14

Stock

5268

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-08-21

Unit Price (US$)

1.093

Package

Flip Chip 20

Packing Type

Tape And Reel

Operating Temperature (°C)

(min)

-40

(max)

85

ECCN (US)

EAR99

Country of Origin

CHINA

(*) 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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Evaluation Tools

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      2 A, 2 MHz, Vout = 3.3 V, high-efficiency dual-mode buck-boost DC-DC converter based on the STBB3J

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS9934
      2 A, high efficiency single inductor buck-boost DC-DC converter
      5.0
      1.96 MB
      PDF
      DS9934

      2 A, high efficiency single inductor buck-boost DC-DC converter

Publications and Collaterals

    • Description Version Size Action
      Switching Converters (DC-DC) – Quick Reference Guide 1.0
      481.92 KB
      PDF

      Switching Converters (DC-DC) – Quick Reference Guide

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STBB3JR
Active
Flip Chip 20 Industrial Ecopack2

STBB3JR

Package:

Flip Chip 20

Material Declaration**:

PDF XML

Marketing Status

Active

Package

Flip Chip 20

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.