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  • 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

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Part Number
Package
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Temperature (°C) Marketing Status
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Quantity
ECCN (US)
More info
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L4979MD013TR SO-20 Tape And Reel - -
Active
0.7358 1000 EAR99
MORE INFO

Country of Origin:

MALAYSIA

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Distributor availability ofL4979MD013TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1000 1 Order Now
FUTURE WORLDWIDE 1000 1000 Order Now
RUTRONIK EUROPE 4000 1000 Order Now

Distributor reported inventory date: 2019-06-09

Distributor Name

DIGIKEY

Stock

1000

Min.Order

1

Region

WORLDWIDE Order Now

FUTURE

Stock

1000

Min.Order

1000

Region

WORLDWIDE Order Now

RUTRONIK

Stock

4000

Min.Order

1000

Region

EUROPE Order Now

Distributor reported inventory date: 2019-06-09

Buy now
L4979MD SO-20 Tube - -
Active
0.7358 1000 EAR99
MORE INFO

Country of Origin:

MALAYSIA

No availability of distributors reported, please contact our sales office

L4979MD013TR

Package

SO-20

Packing Type

Tape And Reel

Unit Price (US$)

0.7358*

Distributor availability ofL4979MD013TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1000 1 Order Now
FUTURE WORLDWIDE 1000 1000 Order Now
RUTRONIK EUROPE 4000 1000 Order Now

Distributor reported inventory date: 2019-06-09

Distributor Name

DIGIKEY

Stock

1000

Min.Order

1

Region

WORLDWIDE Order Now

FUTURE

Stock

1000

Min.Order

1000

Region

WORLDWIDE Order Now

RUTRONIK

Stock

4000

Min.Order

1000

Region

EUROPE Order Now

Distributor reported inventory date: 2019-06-09

Operating Temperature (°C)

(min)

-

(max)

-

Marketing Status

Active

Unit Price (US$)

0.7358

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

L4979MD

Package

SO-20

Packing Type

Tube

Unit Price (US$)

0.7358*

Operating Temperature (°C)

(min)

-

(max)

-

Marketing Status

Active

Unit Price (US$)

0.7358

Quantity

1000

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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Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L4979MD
Active
SO-20 Automotive Ecopack1 (*)
L4979MD013TR
Active
SO-20 Automotive Ecopack2 (**)

L4979MD

Package:

SO-20

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-20

Grade

Automotive

RoHS Compliance Grade

Ecopack1 (*)

L4979MD013TR

Package:

SO-20

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-20

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.