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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Part Number
Package
Packing Type
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Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
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Order from ST
L6986 HTSSOP16 Tube
Active
1.193 10000 EAR99 MALAYSIA Check Availability

Distributor availability ofL6986

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1730 1 Order Now
ARROW AMERICA 740 1920 Order Now
MOUSER WORLDWIDE 1765 1 Order Now
Farnell Element14 EUROPE 1214 1 Order Now

Distributor reported inventory date: 2019-07-21

Distributor Name

DIGIKEY

Stock

1730

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

740

Min.Order

1920

Region

AMERICA Order Now

MOUSER

Stock

1765

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1214

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-07-21

Buy now
L6986TR HTSSOP16 Tape And Reel
Active
1.193 10000 EAR99 MALAYSIA Check Availability

Distributor availability ofL6986TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1292 1 Order Now
ARROW EUROPE 22504 0 Order Now
MOUSER WORLDWIDE 2752 1 Order Now
Farnell Element14 EUROPE 3188 1 Order Now
RUTRONIK EUROPE 34990 2500 Order Now

Distributor reported inventory date: 2019-07-21

Distributor Name

DIGIKEY

Stock

1292

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

22504

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

2752

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

3188

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

34990

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2019-07-21

Get sample

L6986

Package

HTSSOP16

Packing Type

Tube

Unit Price (US$)

1.193*

Distributor availability ofL6986

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1730 1 Order Now
ARROW AMERICA 740 1920 Order Now
MOUSER WORLDWIDE 1765 1 Order Now
Farnell Element14 EUROPE 1214 1 Order Now

Distributor reported inventory date: 2019-07-21

Distributor Name

DIGIKEY

Stock

1730

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

740

Min.Order

1920

Region

AMERICA Order Now

MOUSER

Stock

1765

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1214

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-07-21

Marketing Status

Active

Unit Price (US$)

1.193

Quantity

10000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

L6986TR

Package

HTSSOP16

Packing Type

Tape And Reel

Unit Price (US$)

1.193*

Distributor availability ofL6986TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1292 1 Order Now
ARROW EUROPE 22504 0 Order Now
MOUSER WORLDWIDE 2752 1 Order Now
Farnell Element14 EUROPE 3188 1 Order Now
RUTRONIK EUROPE 34990 2500 Order Now

Distributor reported inventory date: 2019-07-21

Distributor Name

DIGIKEY

Stock

1292

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

22504

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

2752

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

3188

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

34990

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2019-07-21

Marketing Status

Active

Unit Price (US$)

1.193

Quantity

10000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

(*) 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

    • 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

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
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      PDF
      Switching Converters (DC-DC) – Quick Reference Guide 1.0
      481.92 KB
      PDF

      Electric vehicle (EV) ecosystem

      Switching Converters (DC-DC) – Quick Reference Guide

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

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A This option is required and must be a number.