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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

Recommended for you

Related Applications

Home and Professional Appliances

Power Supplies and Converters

Evaluation Tools

    • Part Number

      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

    • Description Version Size Action
      TN1224
      Mounting instructions for SMD (surface mounting device) packages
      2.2
      1.06 MB
      PDF
      TN1224

      Mounting instructions for SMD (surface mounting device) packages

Quality and Reliability

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.

Sample & Buy

Part Number
Order from Distributors
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Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
STBB3JR Available at 3 distributors

Distributor availability ofSTBB3JR

Distributor Name
Region Stock Min. Order Third party link
AVNET AMERICA 5000 0 Order Now
Newark Element14 AMERICA 80 0 Order Now
Farnell Element14 EUROPE 3888 1 Order Now

Distributor reported inventory date: 2020-08-12

Distributor Name

AVNET

Stock

5000

Min.Order

0

Region

AMERICA Order Now

Newark Element14

Stock

80

Min.Order

0

Region

AMERICA Order Now

Farnell Element14

Stock

3888

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-12

Sample & Buy Buy now
Active
EAR99 NEC Tape And Reel Flip Chip 20 -40 85 CHINA 1.093 / 1k

STBB3JR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.093 / 1k

Distributor availability ofSTBB3JR

Distributor Name
Region Stock Min. Order Third party link
AVNET AMERICA 5000 0 Order Now
Newark Element14 AMERICA 80 0 Order Now
Farnell Element14 EUROPE 3888 1 Order Now

Distributor reported inventory date: 2020-08-12

Distributor Name

AVNET

Stock

5000

Min.Order

0

Region

AMERICA Order Now

Newark Element14

Stock

80

Min.Order

0

Region

AMERICA Order Now

Farnell Element14

Stock

3888

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-12

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

Flip Chip 20

Operating Temperature (°C)

(min)

-40

(max)

85

Budgetary Price (US$)* / Qty

1.093 / 1k

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