Overview
Sample & Buy
Solutions
Resources
Tools & Software
Quality & Reliability
eDesignSuite
Get Started
Partner products
Sales Briefcase
  • The L5983 is a step-down switching regulator with a 2.0 A (min.) current limited embedded Power MOSFET, so it is able to deliver an output current in excess of 1.5 A DC to the load.

    The input voltage can range from 2.9 V to 18 V, while the output voltage can be set starting from 0.6 V to VIN. Having a minimum input voltage of 2.9 V, the device is suitable also for a 3.3 V bus.
    Requiring a minimum set of external components, the device includes an internal 250 kHz switching frequency oscillator that can be externally adjusted up to 1 MHz.
    The VFQFPN package with an exposed pad allows reducing the RthJAdown to approximately 60 °C/W.

    Key Features

    • 1.5 A DC output current
    • 2.9 V to 18 V input voltage
    • Output voltage adjustable from 0.6 V
    • 250 kHz switching frequency, programmable up to 1 MHz
    • Internal soft-start and inhibit
    • Low dropout operation: 100% duty cycle
    • Voltage feedforward
    • Zero load current operation
    • Overcurrent and thermal protection
    • VFQFPN8 3 x 3 mm package

Circuit Diagram

Download Download

Recommended for you

Evaluation Tools

    • Part Number

      1.5 A step-down switching regulator demonstration board based on the L5983

      1.5 A step-down switching regulator demonstration board based on the L5983

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS5037
      1.5 A step-down switching regulator
      8.0
      1,020.49 KB
      PDF
      DS5037

      1.5 A step-down switching regulator

    • 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

    • Description Version Size Action
      DN0011
      ST1S03 alternative topology: Using a buck in a negative buck-boost configuration
      1.2
      361.3 KB
      PDF
      DN0011

      ST1S03 alternative topology: Using a buck in a negative buck-boost configuration

Publications and Collaterals

    • 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**
L5983TR
Active
DFN8 3x3 Industrial Ecopack2

L5983TR

Package:

DFN8 3x3

Material Declaration**:

Marketing Status

Active

Package

DFN8 3x3

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
Order from Distributors
Order from ST
Package
Packing Type
Marketing Status
ECCN (US)
Country of Origin
Budgetary Price (US$)*/Qty
L5983TR Available at 2 distributors

Distributor availability ofL5983TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4450 1 Order Now
MOUSER WORLDWIDE 3580 1 Order Now

Distributor reported inventory date: 2020-07-08

Distributor Name

DIGIKEY

Stock

4450

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

3580

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-07-08

Get sample DFN8 3x3 Tape And Reel
Active
EAR99 PHILIPPINES 0.918 / 1k

L5983TR

Package

DFN8 3x3

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.918 / 1k

Distributor availability ofL5983TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4450 1 Order Now
MOUSER WORLDWIDE 3580 1 Order Now

Distributor reported inventory date: 2020-07-08

Distributor Name

DIGIKEY

Stock

4450

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

3580

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-07-08

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.918 / 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