This product is in stock in our e-store

Sample and buy
Overview
Tools & Software
Resources
Solutions
Quality & Reliability
Sales Briefcase
eDesignSuite
Get Started
Sample & Buy
Partner products
  • L4979D and L4979MD are low dropout linear regulators with microprocessor control functions such as low voltage reset, watchdog, on/off control. Typical quiescent current is 100 μA in very low output current mode and enabled regulator. The devices drop to 6 μA with not enabled regulators.

    On chip trimming results in high output voltage accuracy (+/-2%). Accuracy is kept over wide temperature range, line and load variation.
    The maximum input voltage is 40 V. The max output current is internally limited. Internal temperature protection disables the voltage regulator output.

    Key Features

    • AEC-Q100 qualified
    • Operating DC supply voltage range 5.6 V to 31 V
    • Low quiescent current (6 μA typ. @ 25 °C with enable low)
    • High precision output voltage (+/-2%)
    • Low dropout voltage less than 0.5 V
    • Reset circuit sensing the output voltage down to 1 V
    • Programmable reset pulse delay with external capacitor
    • Watchdog
    • Programmable watchdog timer with external capacitor
    • Thermal shutdown and short circuit protection
    • Automotive temperature range (Tj = -40 °C to 150 °C)
    • Enable input for enabling/disabling the voltage regulator output

Circuit Diagram

Download Download

Sample & Buy

Part Number
Package
Packing Type
Temperature (°C) Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
More info
Order from Distributors
Order from ST
min
max
L4979D SO-8 Tube - -
NRND
0.6705 1000 EAR99
MORE INFO

Country of Origin:

-

No availability of distributors reported, please contact our sales office Buy direct
L4979D013TR SO-8 Tape And Reel - -
Active
0.6705 1000 EAR99
MORE INFO

Country of Origin:

CHINA

Check Availability

Distributor availability ofL4979D013TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2500 1 Order Now
MOUSER WORLDWIDE 17467 1 Order Now

Distributor reported inventory date: 2019-04-12

Distributor Name

DIGIKEY

Stock

2500

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

17467

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-04-12

Buy direct

L4979D

Package

SO-8

Packing Type

Tube

Unit Price (US$)

0.6705*

Operating Temperature (°C)

(min)

-

(max)

-

Marketing Status

NRND

Unit Price (US$)

0.6705

Quantity

1000

ECCN (US)

EAR99

Country of Origin

-

L4979D013TR

Package

SO-8

Packing Type

Tape And Reel

Unit Price (US$)

0.6705*

Distributor availability ofL4979D013TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2500 1 Order Now
MOUSER WORLDWIDE 17467 1 Order Now

Distributor reported inventory date: 2019-04-12

Distributor Name

DIGIKEY

Stock

2500

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

17467

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-04-12

Operating Temperature (°C)

(min)

-

(max)

-

Marketing Status

Active

Unit Price (US$)

0.6705

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

(*) 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

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS3717
      Automotive low dropout voltage regulator
      11.0
      650.87 KB
      PDF
      DS3717

      Automotive low dropout voltage regulator

    • Description Version Size Action
      AN290
      VERY LOW DROP REGULATORS ENHANCE SUPPLY PERFORMANCE
      1.2
      525.66 KB
      PDF
      AN290

      VERY LOW DROP REGULATORS ENHANCE SUPPLY PERFORMANCE

Publications and Collaterals

    • Description Version Size Action
      Linear and Switching Voltage Regulators Selection Guide 3.0
      370.88 KB
      PDF
      Smart power solutions for car body applications 4.0
      3.38 MB
      PDF

      Linear and Switching Voltage Regulators Selection Guide

      Smart power solutions for car body applications

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

      Electric vehicle (EV) ecosystem

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L4979D
NRND
SO-8 Automotive Ecopack2
L4979D013TR
Active
SO-8 Automotive Ecopack2 (**)

L4979D

Package:

SO-8

Material Declaration**:

Marketing Status

NRND

Package

SO-8

Grade

Automotive

RoHS Compliance Grade

Ecopack2

L4979D013TR

Package:

SO-8

Material Declaration**:

PDF

Marketing Status

Active

Package

SO-8

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.