38 V 1.5 A synchronous step-down switching regulator with 30 uA quiescent current

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  • The L6986F is a step-down monolithic switching regulator able to deliver up to 1.5 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 meet 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 and minimizes the output voltage ripple overload current range, meeting the low noise application specification. The output voltage supervisor manages the reset phase for any digital load (μC, FPGA). 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

    • 1.5 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
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Country of Origin
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L6986F HTSSOP16 Tube
Active
1.193 10000 EAR99 MALAYSIA Check Availability

Distributor availability ofL6986F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1910 1 Order Now
AVNET AMERICA 1920 0 Order Now
ARROW EUROPE 583 0 Order Now
MOUSER WORLDWIDE 1917 1 Order Now

Distributor reported inventory date: 2019-12-08

Distributor Name

DIGIKEY

Stock

1910

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

1920

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

583

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

1917

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-12-08

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L6986FTR HTSSOP16 Tape And Reel
Active
1.193 10000 EAR99 MALAYSIA Check Availability

Distributor availability ofL6986FTR

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 100 1 Order Now

Distributor reported inventory date: 2019-12-08

Distributor Name

MOUSER

Stock

100

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-12-08

Buy now

L6986F

Package

HTSSOP16

Packing Type

Tube

Unit Price (US$)

1.193*

Distributor availability ofL6986F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1910 1 Order Now
AVNET AMERICA 1920 0 Order Now
ARROW EUROPE 583 0 Order Now
MOUSER WORLDWIDE 1917 1 Order Now

Distributor reported inventory date: 2019-12-08

Distributor Name

DIGIKEY

Stock

1910

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

1920

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

583

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

1917

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-12-08

Marketing Status

Active

Unit Price (US$)

1.193

Quantity

10000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

L6986FTR

Package

HTSSOP16

Packing Type

Tape And Reel

Unit Price (US$)

1.193*

Distributor availability ofL6986FTR

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 100 1 Order Now

Distributor reported inventory date: 2019-12-08

Distributor Name

MOUSER

Stock

100

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-12-08

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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00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS11041
      38 V, 1.5 A synchronous step-down switching regulator with 30 µA quiescent current
      2.0
      6.56 MB
      PDF
      DS11041

      38 V, 1.5 A synchronous step-down switching regulator with 30 µA quiescent current

HW Model, CAD Libraries & SVD

    • Description Version Size Action
      A6986F Pspice model
      267.4 KB
      ZIP
      A6986F3V3 Pspice model
      260.03 KB
      ZIP
      A6986F5V Pspice model
      305.46 KB
      ZIP

      A6986F Pspice model

      A6986F3V3 Pspice model

      A6986F5V Pspice model

Publications and Collaterals

    • Description Version Size Action
      Electric vehicle (EV) ecosystem 1.1
      1.28 MB
      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**
L6986F
Active
HTSSOP16 Industrial Ecopack2
L6986FTR
Active
HTSSOP16 Automotive Ecopack2

L6986F

Package:

HTSSOP16

Material Declaration**:

PDF XML

Marketing Status

Active

Package

HTSSOP16

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L6986FTR

Package:

HTSSOP16

Material Declaration**:

PDF XML

Marketing Status

Active

Package

HTSSOP16

Grade

Automotive

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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