High efficiency synchronous step-down regulator based on the L6984

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  • The STEVAL-ISA159V1 product evaluation board is based on L6984, a high-efficiency monolithic synchronous step-down regulator, capable of delivering up to 400 mA of DC current. The fixed 3.3 V output requires no external resistor divider. The L6984 is suited for home appliances, factory and building automation. The Low Consumption Mode (LCM) is designed for eco-friendly home appliances and automotive applications active during car parking, so it maximizes the efficiency at light load with controlled output voltage ripple. The Low Noise Mode (LNM) makes the switching frequency nearly constant over the load current range, serving low noise application specifications such as audio and sensors. The PGOOD open collector output can implement output voltage sequencing during the power-up phase. The synchronous rectification, designed for high efficiency at medium-heavy load, and the high switching frequency capability ensure a compact application size. Pulse-by-pulse current sensing on the low-side power element implements effective constant current protection.

    主要特性

    • 400 mA DC output current
    • 4.5 V to 36 V operating input voltage
    • Synchronous rectification
    • Low consumption mode or low noise mode
    • 100 µA IQ at light load (LCM VOUT = 3.3 V)
    • 13 µA IQ-SHTDWN
    • Adjustable fSW (250 kHz - 600 kHz)
    • Output voltage adjustable from 0.9 V
    • No resistor divider required for 3.3 V VOUT
    • VBIAS maximizes efficiency at light load
    • 350 mA valley current limit
    • Constant on-time control scheme
    • PGOOD open collector
    • Thermal shutdown
    • RoHS compliant

样片和购买

型号
Core Product
Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
Order from Distributors
Order from ST
STEVAL-ISA159V1 L6984
Active
33.0 1 EAR99 ITALY Check Availability

Distributor availability ofSTEVAL-ISA159V1

代理商名称
地区 库存 最小订购量 Third party link
FUTURE WORLDWIDE 3 1 Order Now
MOUSER WORLDWIDE 1 1 Order Now
Farnell Element14 EUROPE 6 1 Order Now

代理商库存报告日期: 2019-04-24

代理商名称

FUTURE

库存

3

Min.Order

1

地区

WORLDWIDE Order Now

MOUSER

库存

1

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

6

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-04-24

Buy direct

STEVAL-ISA159V1

Core Product

L6984

Marketing Status

Active

Unit Price (US$)

33.0*

Distributor availability ofSTEVAL-ISA159V1

代理商名称
地区 库存 最小订购量 Third party link
FUTURE WORLDWIDE 3 1 Order Now
MOUSER WORLDWIDE 1 1 Order Now
Farnell Element14 EUROPE 6 1 Order Now

代理商库存报告日期: 2019-04-24

代理商名称

FUTURE

库存

3

Min.Order

1

地区

WORLDWIDE Order Now

MOUSER

库存

1

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

6

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-04-24

Unit Price (US$)

33

Quantity

1

ECCN (US)

EAR99

Country of Origin

ITALY

(*) 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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技术文档

    • Description 版本 文档大小 Action
      DB2417
      High efficiency synchronous step-down regulator based on the L6984
      2.0
      182.43 KB
      PDF
      DB2417

      High efficiency synchronous step-down regulator based on the L6984

硬件资源

    • Description 版本 文档大小 Action
      STEVAL-ISA159V1 gerber files 1.0
      1.28 MB
      ZIP

      STEVAL-ISA159V1 gerber files

    • Description 版本 文档大小 Action
      STEVAL-ISA159V1 BOM 1.0
      72.85 KB
      PDF

      STEVAL-ISA159V1 BOM

    • Description 版本 文档大小 Action
      STEVAL-ISA159V1 schematics 1.0
      45.16 KB
      PDF

      STEVAL-ISA159V1 schematics

出版刊物和宣传资料

    • Description 版本 文档大小 Action
      eDesignSuite-The smart way to design your application 1.0
      842.88 KB
      PDF

      eDesignSuite-The smart way to design your application

法律

    • Description 版本 文档大小 Action
      Evaluation products license agreement 1.6
      74.12 KB
      PDF

      Evaluation products license agreement

型号 Marketing Status Package Grade RoHS Compliance Grade WEEE Compliant Material Declaration**
STEVAL-ISA159V1
Active
CARD 工业 Ecopack2 -

STEVAL-ISA159V1

Package:

CARD

Material Declaration**:

Marketing Status

Active

Package

CARD

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.