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Product overview

Description

This primary controller I.C., developed in BCD60II technology, has been designed to implement off line or DC-DC power supply applications using a fixed frequency current mode control. Based on a standard current mode PWM controller this device includes some features such as programmable soft start, IN/OUT synchronization, disable (to be used for over voltage protection and for power management), precise maximum Duty Cycle Control, 100ns leading edge blanking on current sense, pulse by pulse current limit, overcurrent protection with soft start intervention, and Standby function for oscillator frequency reduction when the converter is lightly loaded.
  • All features

    • PRIMARY OVERCURRENT FAULT DETECTION WITH RE-START DELAY
    • PROGRAMMABLE SOFT START
    • IN/OUT SYNCHRONIZATION
    • PWM UVLO WITH HYSTERESIS
    • INTERNAL 100ns LEADING EDGE BLANKING OF CURRENT SENSE
    • LATCHED DISABLE
    • PACKAGE: DIP16 AND SO16
    • 100% AND 50% MAXIMUM DUTY CYCLE LIMIT
    • PROGRAMMABLE DUTY CYCLE
    • CURRENT-MODE CONTROL PWM
    • LOW START-UP CURRENT (< 120µA)
    • SWITCHING FREQUENCY UP TO 1MHz
    • FULLY LATCHED PWM LOGIC WITH DOUBLE PULSE SUPPRESSION
    • STANDBY FUNCTION
    • HIGH-CURRENT OUTPUT DRIVE SUITABLE FOR POWER MOSFET (1A)

Circuit Diagram

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Related Applications

Industrial

EDA Symbols, Footprints and 3D Models

STMicroelectronics - L5991

Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.

Symbols

Symbols

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Footprints

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3D models

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L5991AD
Active
SO-16 Industrial Ecopack2
L5991AD13TR
Active
SO-16 Industrial Ecopack2
L5991D
Active
SO-16 Industrial Ecopack2
L5991D013TR
Active
SO-16 Industrial Ecopack2

L5991AD

Package:

SO-16

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-16

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L5991AD13TR

Package:

SO-16

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-16

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L5991D

Package:

SO-16

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-16

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L5991D013TR

Package:

SO-16

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-16

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.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
L5991AD13TR Available at 1 distributors

Distributor availability ofL5991AD13TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5780 1 Order Now

Distributor reported inventory date: 2021-05-07

Distributor Name

DIGIKEY

Stock

5780

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2021-05-07

Buy Direct
Active
EAR99 NEC Tape And Reel SO-16 - - CHINA 0.924 / 1k
L5991D Available at 5 distributors

Distributor availability ofL5991D

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1017 1 Order Now
RS COMPONENTS EUROPE 605 5 Order Now
Newark Element14 AMERICA 56 0 Order Now
MOUSER WORLDWIDE 932 1 Order Now
Farnell Element14 EUROPE 15 1 Order Now

Distributor reported inventory date: 2021-05-07

Distributor Name

DIGIKEY

Stock

1017

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

605

Min.Order

5

Region

EUROPE Order Now

Newark Element14

Stock

56

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

932

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

15

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-05-07

Buy Direct
Active
EAR99 NEC Tube SO-16 - - CHINA 0.8916 / 1k
L5991AD Available at 3 distributors

Distributor availability ofL5991AD

Distributor Name
Region Stock Min. Order Third party link
Newark Element14 AMERICA 4 0 Order Now
MOUSER WORLDWIDE 306 1 Order Now
Farnell Element14 EUROPE 973 1 Order Now

Distributor reported inventory date: 2021-05-07

Distributor Name

Newark Element14

Stock

4

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

306

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

973

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-05-07

Buy Direct
Active
EAR99 NEC Tube SO-16 - - CHINA 0.924 / 1k
L5991D013TR Available at 2 distributors

Distributor availability ofL5991D013TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5000 1 Order Now
MOUSER WORLDWIDE 1787 1 Order Now

Distributor reported inventory date: 2021-05-07

Distributor Name

DIGIKEY

Stock

5000

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

1787

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2021-05-07

Buy Direct
Active
EAR99 NEC Tape And Reel SO-16 - - CHINA 0.9696 / 1k

L5991AD13TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.924 / 1k

Distributor availability ofL5991AD13TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5780 1 Order Now

Distributor reported inventory date: 2021-05-07

Distributor Name

DIGIKEY

Stock

5780

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2021-05-07

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SO-16

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

0.924 / 1k

Country of Origin

CHINA

L5991D

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.8916 / 1k

Distributor availability ofL5991D

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1017 1 Order Now
RS COMPONENTS EUROPE 605 5 Order Now
Newark Element14 AMERICA 56 0 Order Now
MOUSER WORLDWIDE 932 1 Order Now
Farnell Element14 EUROPE 15 1 Order Now

Distributor reported inventory date: 2021-05-07

Distributor Name

DIGIKEY

Stock

1017

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

605

Min.Order

5

Region

EUROPE Order Now

Newark Element14

Stock

56

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

932

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

15

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-05-07

ECCN (EU)

NEC

Packing Type

Tube

Package

SO-16

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

0.8916 / 1k

Country of Origin

CHINA

L5991AD

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.924 / 1k

Distributor availability ofL5991AD

Distributor Name
Region Stock Min. Order Third party link
Newark Element14 AMERICA 4 0 Order Now
MOUSER WORLDWIDE 306 1 Order Now
Farnell Element14 EUROPE 973 1 Order Now

Distributor reported inventory date: 2021-05-07

Distributor Name

Newark Element14

Stock

4

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

306

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

973

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-05-07

ECCN (EU)

NEC

Packing Type

Tube

Package

SO-16

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

0.924 / 1k

Country of Origin

CHINA

L5991D013TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.9696 / 1k

Distributor availability ofL5991D013TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5000 1 Order Now
MOUSER WORLDWIDE 1787 1 Order Now

Distributor reported inventory date: 2021-05-07

Distributor Name

DIGIKEY

Stock

5000

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

1787

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2021-05-07

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SO-16

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

0.9696 / 1k

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