L6986

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38 V 2 A synchronous step-down switching regulator with 30 uA quiescent current

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  • The L6986 device is a step-down monolithic switching regulator able to deliver up to 2 A DC. The output voltage adjustability ranges from 0.85 V to VIN. Thanks to the P-channel MOSFET high-side power element, the device features 100% duty cycle operation. The wide input voltage range meets the specification for the 5 V, 12 V and 24 V power supplies. The “Low Consumption Mode” (LCM) is designed for applications active during idle mode, so it maximizes the efficiency at light load with controlled output voltage ripple. The “Low Noise Mode” (LNM) makes the switching frequency constant overload current range, meeting the low noise application specification. The output voltage supervisor manages the reset phase for any digital load (μC, FPGA, etc.). The RST open collector output can also 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 both power elements implements an effective constant current protection.

    Key Features

    • 2 A DC output current
    • 4 V to 38 V operating input voltage
    • Low consumption mode or low noise mode
    • 30 μA IQ at light load (LCM VOUT = 3.3 V)
    • 8 μA IQ-SHTDWN
    • Adjustable fSW (250 kHz - 2 MHz)
    • Output voltage adjustable from 0.85 V to VIN
    • Embedded output voltage supervisor
    • Synchronization
    • Adjustable soft-start time
    • Internal current limiting
    • Overvoltage protection
    • Output voltage sequencing
    • Peak current mode architecture
    • RDSON HS = 180 mΩ, RDSON LS = 150 mΩ
    • Thermal shutdown

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Related Applications

Home, Building and City Automation

Lighting and Controls

Metering

Power Supplies and Converters

Smart Farming

Evaluation Tools

    • Part Number

      38 V, 2 A synchronous step-down switching regulator evaluation board based on the L6986

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Technical Documentation

    • Description Version Size Action
      DS9980
      38 V, 2 A synchronous step-down switching regulator with 30 μA quiescent current
      7.0
      5.91 MB
      PDF
      DS9980

      38 V, 2 A synchronous step-down switching regulator with 30 μA quiescent current

    • 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

HW Model, CAD Libraries & SVD

    • Description Version Size Action
      A6986 Pspice model
      338.57 KB
      ZIP

      A6986 Pspice model

Publications and Collaterals

    • Description Version Size Action
      L6984, L6986 Energy saving synchronous DC-DC converters for industrial
      1.24 MB
      PDF

      L6984, L6986 Energy saving synchronous DC-DC converters for industrial

    • Description Version Size Action
      Electric vehicle (EV) ecosystem 1.1
      1.28 MB
      PDF

      Electric vehicle (EV) ecosystem

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L6986
Active
HTSSOP16 Industrial Ecopack2
L6986TR
Active
HTSSOP16 Industrial Ecopack2

L6986

Package:

HTSSOP16

Material Declaration**:

PDF XML

Marketing Status

Active

Package

HTSSOP16

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L6986TR

Package:

HTSSOP16

Material Declaration**:

PDF XML

Marketing Status

Active

Package

HTSSOP16

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.

eDesignSuite

Converter

Input

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

Output Power

V This option is required and must be a number.
A This option is required and must be a number.

Sample & Buy

Part Number
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Package
Packing Type
Marketing Status
ECCN (US)
Country of Origin
Budgetary Price (US$)*/Qty
L6986 Available at 3 distributors

Distributor availability ofL6986

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1729 1 Order Now
MOUSER WORLDWIDE 1625 1 Order Now
Farnell Element14 EUROPE 910 1 Order Now

Distributor reported inventory date: 2020-07-08

Distributor Name

DIGIKEY

Stock

1729

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

1625

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

910

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-08

Buy now HTSSOP16 Tube
Active
EAR99 PHILIPPINES 1.193 / 1k
L6986TR Available at 5 distributors

Distributor availability ofL6986TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 116 1 Order Now
RS COMPONENTS EUROPE 2500 1 Order Now
ARROW EUROPE 4 0 Order Now
Newark Element14 AMERICA 102 0 Order Now
MOUSER WORLDWIDE 1755 1 Order Now

Distributor reported inventory date: 2020-07-08

Distributor Name

DIGIKEY

Stock

116

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2500

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

4

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

102

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

1755

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-07-08

Get sample HTSSOP16 Tape And Reel
Active
EAR99 PHILIPPINES 1.193 / 1k

L6986

Package

HTSSOP16

Packing Type

Tube

Budgetary Price (US$)*/Qty

1.193 / 1k

Distributor availability ofL6986

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1729 1 Order Now
MOUSER WORLDWIDE 1625 1 Order Now
Farnell Element14 EUROPE 910 1 Order Now

Distributor reported inventory date: 2020-07-08

Distributor Name

DIGIKEY

Stock

1729

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

1625

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

910

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-08

Marketing Status

Active

Budgetary Price (US$)* / Qty

1.193 / 1k

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

L6986TR

Package

HTSSOP16

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

1.193 / 1k

Distributor availability ofL6986TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 116 1 Order Now
RS COMPONENTS EUROPE 2500 1 Order Now
ARROW EUROPE 4 0 Order Now
Newark Element14 AMERICA 102 0 Order Now
MOUSER WORLDWIDE 1755 1 Order Now

Distributor reported inventory date: 2020-07-08

Distributor Name

DIGIKEY

Stock

116

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2500

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

4

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

102

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

1755

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-07-08

Marketing Status

Active

Budgetary Price (US$)* / Qty

1.193 / 1k

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