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LM2586 Product Folder

SIMPLE SWITCHER 3-Amp Flyback Regulator

See Also:

LM5000 - HIGHER FREQUENCY (300KHZ TO 1.25MHZ), 2A 80V INTEGRATED SWITCH IN SMALLER PACKAGE

Generic P/N 2586

General
Description

Package
& Models

Samples
& Pricing

Reliability
Metrics

Application
Notes

WEBENCH Live Simulation!

LM2586 Webench™ Custom Design/Analyze/Build It
4.0 <=	V in Lower V	<=	V in Upper V	<= 40.0
V out	1.2 <=		V	<= 300.0
I out			A	<= 3.00
Ambient Temperature			°C	<= 100
What is Webench?

Parametric Table

Temperature Min (deg C)	-40
Temperature Max (deg C)	125
Multiple Output Capability	Yes
On/Off Pin	Yes
Error Flag	No
InputMin Voltage (Volt)	4
InputMax Voltage (Volt)	40
Output Current (mA)	3000
Output Voltage (Volt)	12, 3.30, 5
Adjustable Output	No, Yes
Output Range	1.23V min.
Switching Frequency (Hz)	100000
Adj Switch Frequency	Yes
Sync Pin	Yes
Efficiency (%)	93, 76, 80
Flyback	Yes
Inverting	No
Step-Up	Yes
Step-Down	No
RegType	Switching Regulator

-

Datasheet

Title	Size in Kbytes	Date	View Online	Download	Receive via Email
LM2586 SIMPLE SWITCHER 3A Flyback Regulator with Shutdown	778 Kbytes	2-Mar-99	View Online	Download	Receive via Email
LM2586 SIMPLE SWITCHER 3A Flyback Regulator with Shutdown (JAPANESE)	861 Kbytes

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Package Availability, Models, Samples & Pricing

Part Number

Package

Status

Models

Samples &
Electronic
Orders

Budgetary Pricing

Std
Pack
Size

Package
Marking

Type

Pins

MSL/Lead-Free Availability

Lead
Time

Qty

SPICE

IBIS

Qty

$US each

LM2586T-12

7

Full production

N/A

N/A

1K+

$3.27

rail
of
45

NSUZXYTT
LM2586T
-12 P+

8-10 weeks

10000

LM2586T-3.3

7

Full production

N/A

N/A

1K+

$3.27

rail
of
45

NSUZXYTT
LM2586T
-3.3 P+

8-10 weeks

25000

LM2586T-5.0

7

Full production

N/A

N/A

1K+

$3.27

rail
of
45

NSUZXYTT
LM2586T
-5.0 P+

8-10 weeks

25000

LM2586T-ADJ

7

Full production

N/A

N/A

1K+

$3.27

rail
of
45

NSUZXYTT
LM2586T
-ADJ P+

8-10 weeks

25000

LM2586S-12

7

Full production

N/A

N/A

1K+

$3.27

rail
of
45

NSUZXYTT
LM2586S
-12 P+

8-10 weeks

25000

LM2586S-3.3

7

Full production

N/A

N/A

1K+

$3.27

rail
of
45

NSUZXYTT
LM2586S
-3.3 P+

8-10 weeks

25000

LM2586S-5.0

7

Full production

N/A

N/A

1K+

$3.27

rail
of
45

NSUZXYTT
LM2586S
-5.0 P+

8-10 weeks

25000

LM2586S-ADJ

7

Full production

N/A

N/A

1K+

$3.27

rail
of
45

NSUZXYTT
LM2586S
-ADJ P+

8-10 weeks

25000

LM2586SX-12

7

Full production

N/A

N/A

1K+

$3.27

reel
of
500

NSUZXYTT
LM2586S
-12 P+

8-10 weeks

25000

LM2586SX-3.3

7

Full production

N/A

N/A

1K+

$3.27

reel
of
500

NSUZXYTT
LM2586S
-3.3 P+

8-10 weeks

25000

LM2586SX-5.0

7

Full production

N/A

N/A

1K+

$3.27

reel
of
500

NSUZXYTT
LM2586S
-5.0 P+

8-10 weeks

25000

LM2586SX-ADJ

7

Full production

N/A

N/A

1K+

$3.27

reel
of
500

NSUZXYTT
LM2586S
-ADJ P+

9-11 weeks

25000

LM2586-12 MDC

Full production

N/A

N/A

gel pak
of
N/A

-

N/A

0

LM2586-5.0 MDC

Full production

N/A

N/A

gel pak
of
N/A

-

N/A

0

LM2586-ADJ MDC

Full production

N/A

N/A

gel pak
of
N/A

-

N/A

0

LM2586-12 MWC

Full production

N/A

N/A

wafer jar
of
N/A

-

N/A

0

LM2586-5.0 MWC

Full production

N/A

N/A

wafer jar
of
N/A

-

N/A

0

LM2586-ADJ MWC

Full production

N/A

N/A

wafer jar
of
N/A

-

N/A

0

General Description

The LM2586 series of regulators are monolithic integrated circuits specifically designed for flyback, step-up (boost), and forward converter applications. The device is available in 4 different output voltage versions: 3.3V, 5.0V, 12V, and adjustable.

Requiring a minimum number of external components, these regulators are cost effective, and simple to use. Included in the datasheet are typical circuits of boost and flyback regulators. Also listed are selector guides for diodes and capacitors and a family of standard inductors and flyback transformers designed to work with these switching regulators.

The power switch is a 3.0A NPN device that can stand-off 65V. Protecting the power switch are current and thermal limiting circuits, and an undervoltage lockout circuit. This IC contains an adjustable frequency oscillator that can be programmed up to 200 kHz. The oscillator can also be synchronized with other devices, so that multiple devices can operate at the same switching frequency.

Other features include soft start mode to reduce in-rush current during start up, and current mode control for improved rejection of input voltage and output load transients and cycle-by-cycle current limiting. The device also has a shutdown pin, so that it can be turned off externally. An output voltage tolerance of ±4%, within specified input voltages and output load conditions, is guaranteed for the power supply system.

Features

Requires few external components
Family of standard inductors and transformers
NPN output switches 3.0A, can stand off 65V
Wide input voltage range: 4V to 40V
Adjustable switching frequency: 100 kHz to 200 kHz
External shutdown capability
Draws less than 60 µA when shut down
Frequency synchronization
Current-mode operation for improved transient response, line regulation, and current limit
Internal soft-start function reduces in-rush current during start-up
Output transistor protected by current limit, under voltage lockout, and thermal shutdown
System output voltage tolerance of ±4% max over line and load conditions

Applications

Flyback regulator
Forward converter
Multiple-output regulator
Simple boost regulator

Reliability Metrics

Part Number	Process	Early Failure Rate - Rejects	Sample Size (EFR)	PPM *	Rel. Rejects	Device Hours	Long Term Failure Rates (FITS)	MTTF
LM2586-12 MDC	SLM	0	35000	0	0	1500000	3	424108012
LM2586-12 MWC	SLM	0	35000	0	0	1500000	3	424108012
LM2586-5.0 MDC	SLM	0	35000	0	0	1500000	3	424108012
LM2586-5.0 MWC	SLM	0	35000	0	0	1500000	3	424108012
LM2586-ADJ MDC	SLM	0	35000	0	0	1500000	3	424108012
LM2586-ADJ MWC	SLM	0	35000	0	0	1500000	3	424108012
LM2586S-12	SLM	0	35000	0	0	1500000	3	424108012
LM2586S-3.3	SLM	0	35000	0	0	1500000	3	424108012
LM2586S-5.0	SLM	0	35000	0	0	1500000	3	424108012
LM2586S-ADJ	SLM	0	35000	0	0	1500000	3	424108012
LM2586SX-12	SLM	0	35000	0	0	1500000	3	424108012
LM2586SX-3.3	SLM	0	35000	0	0	1500000	3	424108012
LM2586SX-5.0	SLM	0	35000	0	0	1500000	3	424108012
LM2586SX-ADJ	SLM	0	35000	0	0	1500000	3	424108012
LM2586T-12	SLM	0	35000	0	0	1500000	3	424108012
LM2586T-3.3	SLM	0	35000	0	0	1500000	3	424108012
LM2586T-5.0	SLM	0	35000	0	0	1500000	3	424108012
LM2586T-ADJ	SLM	0	35000	0	0	1500000	3	424108012

For more information on Reliablitity Metrics, please click here.

Design Tools

Title	Size in Kbytes	Date	View Online	Download	Receive via Email
SimpleSwitcher® DC-DC Converters Design Software	9 Kbytes	28-Jul-2003	View

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Application Notes

Title	Size in Kbytes	Date	View Online	Download	Receive via Email
AN-1061: Application Note 1061 Power Conversion in Line-Powered Equipment	188 Kbytes	1-Oct-02	View Online	Download	Receive via Email
AN-1082: Application Note 1082 Adjust or Synchronize LM2586/88 Switching Frequency	50 Kbytes	18-Sep-02	View Online	Download	Receive via Email
AN-1095: Application Note 1095 Design of Isolated Converters Using Simple Switchers	398 Kbytes	26-Sep-02	View Online	Download	Receive via Email
AN-1149: Application Note 1149 Layout Guidelines for Switching Power Supplies	113 Kbytes	26-Sep-02	View Online	Download	Receive via Email
AN-1246: Application Note 1246 Stresses in Wide Input DC-DC Converters	272 Kbytes	26-Sep-02	View Online	Download	Receive via Email
AN-556: Application Note 556 Introduction to Power Supplies	159 Kbytes	25-Sep-02	View Online	Download	Receive via Email

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[Information as of 15-Jan-2004]