36 V 400 mA synchronous step-down switching regulator

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  • The L6984 is a step-down monolithic switching regulator able to deliver up to 400 mA DC. The output voltage adjustability ranges from 0.9 V. The fixed 3.3 V VOUT requires no external resistor divider. The “Low Consumption Mode” (LCM) is designed for 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 almost constant over the load current range, serving low noise application specification like car audio/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 make the size of the application compact. Pulse-by-pulse current sensing on low-side power element implements an 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


    75 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

样片和购买

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L6984ATR DFN10 3X3 Tape And Reel
Active
0.813 1000 EAR99 PHILIPPINES Check Availability

Distributor availability ofL6984ATR

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DIGIKEY WORLDWIDE 3911 1 Order Now
MOUSER WORLDWIDE 10946 1 Order Now
Farnell Element14 EUROPE 4512 1 Order Now

代理商库存报告日期: 2019-03-26

代理商名称

DIGIKEY

库存

3911

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1

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MOUSER

库存

10946

Min.Order

1

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WORLDWIDE Order Now

Farnell Element14

库存

4512

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1

地区

EUROPE Order Now

代理商库存报告日期: 2019-03-26

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L6984TR VFDFPN 4X4X1.0 10L PITCH 0.50 Tape And Reel
Active
0.844 1000 EAR99 PHILIPPINES Check Availability

Distributor availability ofL6984TR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 930 1 Order Now
ARROW EUROPE 24000 0 Order Now
MOUSER WORLDWIDE 6360 1 Order Now

代理商库存报告日期: 2019-03-26

代理商名称

DIGIKEY

库存

930

Min.Order

1

地区

WORLDWIDE Order Now

ARROW

库存

24000

Min.Order

0

地区

EUROPE Order Now

MOUSER

库存

6360

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-03-26

Buy direct

L6984ATR

Package

DFN10 3X3

Packing Type

Tape And Reel

Unit Price (US$)

0.813*

Distributor availability ofL6984ATR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 3911 1 Order Now
MOUSER WORLDWIDE 10946 1 Order Now
Farnell Element14 EUROPE 4512 1 Order Now

代理商库存报告日期: 2019-03-26

代理商名称

DIGIKEY

库存

3911

Min.Order

1

地区

WORLDWIDE Order Now

MOUSER

库存

10946

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

4512

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-03-26

Marketing Status

Active

Unit Price (US$)

0.813

Quantity

1000

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

L6984TR

Package

VFDFPN 4X4X1.0 10L PITCH 0.50

Packing Type

Tape And Reel

Unit Price (US$)

0.844*

Distributor availability ofL6984TR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 930 1 Order Now
ARROW EUROPE 24000 0 Order Now
MOUSER WORLDWIDE 6360 1 Order Now

代理商库存报告日期: 2019-03-26

代理商名称

DIGIKEY

库存

930

Min.Order

1

地区

WORLDWIDE Order Now

ARROW

库存

24000

Min.Order

0

地区

EUROPE Order Now

MOUSER

库存

6360

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-03-26

Marketing Status

Active

Unit Price (US$)

0.844

Quantity

1000

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

(*) 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

评估工具

    • 型号

      High efficiency synchronous step-down regulator based on the L6984

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技术文档

    • Description 版本 文档大小 Action
      DS9982
      36 V, 400 mA synchronous step-down switching regulator
      6.0
      4 MB
      PDF
      DS9982

      36 V, 400 mA synchronous step-down switching regulator

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型号 Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L6984ATR
Active
DFN10 3X3 工业 Ecopack2
L6984TR
Active
VFDFPN 4X4X1.0 10L PITCH 0.50 工业 Ecopack2

L6984ATR

Package:

DFN10 3X3

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DFN10 3X3

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L6984TR

Package:

VFDFPN 4X4X1.0 10L PITCH 0.50

Material Declaration**:

Marketing Status

Active

Package

VFDFPN 4X4X1.0 10L PITCH 0.50

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.

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V This option is required. And must be greater than or equal to Volt. Min [V]

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