LM2588   
SIMPLE SWITCHER 5A Flyback Regulator with Shutdown 		Click link to Download

Features
•Requires few external components
•Family of standard inductors and transformers
•NPN output switches 5.0A, 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

Description

The LM2588 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 5.0A 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.

Applications
•Flyback regulator
•Forward converter
•Multiple-output regulator
•Simple boost regulator
WEBENCH Power Designer My Designs

LM2588
 
4.00 <=		 V in Lower
 V		  
<=		 V in Upper
 V		  
<= 40.00
V out 1.23 <=  V <= 300.00
I out    A <= 5.00
Ambient Temperature  °C <= 100


What are WEBENCH® tools?

Also Recommended
LM3488▲Switching Controller For Higher Current Capability



MY BRIEFCASE                                     Remove all from My Briefcase 
Click any "Briefcase" icon to add an item

                                              LM2588
Drag-Select for Table Reset Graph
Also Recommended
LM3488▲Switching Controller For Higher Current Capability

Typical Application
*click for larger image


Block Diagram
click for larger image



Typical Performance
*click for larger image


Paramaters / ValuesLM2588 LM3488
Output Range1.23V min, 5V, 12V, 3.3V 1.26V min
Switch Current5 Amp
Input Min Voltage4 Volt 2.95 Volt
Input Max Voltage40 Volt 40 Volt
Feedback Voltage3.3, 1.23, 12, 5 Volt 1.26 Volt
Frequency Max200 kHz 1000 kHz
Efficiency (peak)90, 75, 80 %
Sync PinYes Yes
Adj Switch FrequencyYes Yes
Frequency Min100 kHz 100 kHz
On/Off PinYes Yes
Error FlagNo No
SoftStartYes Yes
Special FeaturesSIMPLE SWITCHER regulator
TopologyBoost, Flyback Boost, Sepic, Flyback
Step-UpYes Yes
InvertingNo No
FlybackYes Yes
RegTypeSwitching Regulator Switching Regulator
Adjustable OutputYes, No Yes
Temperature Min-40 deg C -40 deg C
Temperature Max125 deg C 125 deg C
Regulator FamilySIMPLE SWITCHER

Datasheet
TitleSizeDateOther
Language
LM2588 SIMPLE SWITCHER® 5A Flyback Regulator with Shutdown1280
Kbytes		19-Jul-05日本語


Featured Application Notes
TitleSizeDateOther
Language
AN-1082: Application Note 1082 Adjust or Synchronize LM2586/88 Switching Frequency50
Kbytes		4-Oct-04日本語
AN-1061: Application Note 1061 Power Conversion in Line-Powered Equipment162
Kbytes		1-Oct-02日本語


More Application Notes
TitleSizeDateOther
Language
AN-1095: Application Note 1095 Design of Isolated Converters Using Simple Switchers398
Kbytes		1-May-04日本語
中文
AN-116: Application Note 116 Use the LM158/LM258/LM358 Dual, Single Supply Op Amp101
Kbytes		1-Oct-02 

Part Number(s)
(NSID)		Top ViewAvailabilityCurrent Reported StockBudgetary PricingStandard Pack Size
LM2588T-12/NOPB

RoHS

Lifetime buy
Lead Time: 6 weeks

 
DistributorRegionQty
ARROWWorldwide45
DIGIKEYWorldwide0
FARNELLEurope and Asia59
RS COMPONENTSWorldwide5
$4.50 each at 1K+ pcsrail
of
45
LM2588T-3.3/NOPB

RoHS

Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
DIGIKEYWorldwide79
$4.50 each at 1K+ pcsrail
of
45
LM2588T-5.0/NOPB
LM2588T-5.0

RoHS

Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
ARROWWorldwide45
AVNET-EMWorldwide60
DIGIKEYWorldwide782
FARNELLEurope and Asia202
FUTUREWorldwide989
$4.50 each at 1K+ pcsrail
of
45
LM2588T-ADJ/NOPB
LM2588T-ADJ

RoHS

Full production
Lead Time: 8 weeks

Samples
DistributorRegionQty
AVNET-EMWorldwide45
DIGIKEYWorldwide68
FARNELLEurope and Asia573
FUTUREWorldwide333
NEWARKAmericas24
RS COMPONENTSWorldwide52
$4.50 each at 1K+ pcsrail
of
45
LM2588S-12/NOPB

RoHS



TO-263		Full production
Lead Time: 6 weeks

 
DistributorRegionQty
DIGIKEYWorldwide47
FUTUREWorldwide80
RS COMPONENTSWorldwide2
$4.50 each at 1K+ pcsrail
of
45
LM2588S-3.3/NOPB

RoHS



TO-263		Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
DIGIKEYWorldwide65
$4.50 each at 1K+ pcsrail
of
45
LM2588S-5.0/NOPB

RoHS



TO-263		Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
DIGIKEYWorldwide141
$4.50 each at 1K+ pcsrail
of
45
LM2588S-ADJ/NOPB
LM2588S-ADJ

RoHS



TO-263		Full production
Lead Time: 8 weeks

Samples
DistributorRegionQty
ARROWWorldwide136
DIGIKEYWorldwide1058
FUTUREWorldwide685
RS COMPONENTSWorldwide18
$4.50 each at 1K+ pcsrail
of
45
LM2588SX-12/NOPB

RoHS



TO-263		Full production
Lead Time: 6 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$4.50 each at 1K+ pcsreel
of
500
LM2588SX-3.3

RoHS



TO-263		Full production
Lead Time: 16 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$4.50 each at 1K+ pcsreel
of
500
LM2588SX-5.0/NOPB
LM2588SX-5.0

RoHS



TO-263		Full production
Lead Time: 6 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
FUTUREWorldwide500
$4.50 each at 1K+ pcsreel
of
500
LM2588SX-ADJ/NOPB
LM2588SX-ADJ

RoHS



TO-263		Full production
Lead Time: 12 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
FUTUREWorldwide1100
NEWARKAmericas431
$4.50 each at 1K+ pcsreel
of
500

Obsolete Versions
Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
LM2588T-12
LM2588T-ADJ
NATIONAL SEMICONDUCTOR
01 Dec 2009

Part Number(s)
(NSID)		DescriptionAvailabilityCurrent Reported StockBudgetary PricingStandard Pack Size
LM2587EVAL
SIMPLE SWITCHER? 5A Flyback Regulator Eval BoardFull production


 
DistributorRegionQty
DIGIKEYWorldwide2
NATIONALWorldwide311
$34.40 each1

Features:

  • Requires few external components
  • Family of standard inductors and transformers
  • NPN output switches 5.0 A, can stand off 65 V
  • Wide input voltage range: 4 V to 40 V
  • Current-mode operation for imporved transient response, line regulation, and current limit
  • 100 kHz switching frequency
  • 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
  • Multiple-output regulator
  • Simple boost regulator
  • Forward converter

Contents:

  • A fully assembled LM2587 Flyback evaluation board
    • LM2587S-12 fixed output regulator
    • VIN      8-16V
    • VOUT 12V
    • IOUT  1A
  • LM258x datasheets
  • Product information

Part Number(s)
(NSID)		Top ViewTypePinsMSL RatingPeak ReflowRoHSCAD SymbolsModelsPackage
Marking
Format
LM2588T-12/NOPB
TO-22071NARoHSDownloadN/A
NSUZXYTTE#
LM2588T
-12 P+
LM2588T-3.3/NOPB
TO-22071NARoHSDownloadN/A
NSUZXYTTE#
LM2588T
-3.3 P+
LM2588T-5.0/NOPB
LM2588T-5.0
TO-22071
1		NA
NA		RoHSDownloadN/A
NSUZXYTTE#
LM2588T
-5.0 P+
LM2588T-ADJ/NOPB
LM2588T-ADJ
TO-22071
1		NA
NA		RoHSDownloadN/A
NSUZXYTTE#
LM2588T
-ADJ P+
LM2588S-12/NOPB
TO-26373245RoHSDownloadN/A
NSUZXYTTE#
LM2588S
-12 P+
LM2588S-3.3/NOPB
TO-26373245RoHSDownloadN/A
NSUZXYTTE#
LM2588S
-3.3 P+
LM2588S-5.0/NOPB
TO-26373245RoHSDownloadN/A
NSUZXYTTE#
LM2588S
-5.0 P+
LM2588S-ADJ/NOPB
LM2588S-ADJ
TO-26373
3		245
235		RoHSDownloadN/A
NSUZXYTTE#
LM2588S
-ADJ P+
LM2588SX-12/NOPB
TO-26373245RoHSDownloadN/A
NSUZXYTTE#
LM2588S
-12 P+
LM2588SX-3.3
TO-2637RoHSDownloadN/A
NSUZXYTTE#
LM2588S
-3.3 P+
LM2588SX-5.0/NOPB
LM2588SX-5.0
TO-26373
3		245
235		RoHSDownloadN/A
NSUZXYTTE#
LM2588S
-5.0 P+
LM2588SX-ADJ/NOPB
LM2588SX-ADJ
TO-26373
3		245
235		RoHSDownloadN/A
NSUZXYTTE#
LM2588S
-ADJ P+

Reliability Metrics
Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LM2588S-12SLM04404600353250011002356520
LM2588S-3.3SLM04404600353250011002356520
LM2588S-5.0SLM04404600353250011002356520
LM2588S-ADJSLM04404600353250011002356520
LM2588SX-12SLM04404600353250011002356520
LM2588SX-3.3SLM04404600353250011002356520
LM2588SX-5.0SLM04404600353250011002356520
LM2588SX-ADJSLM04404600353250011002356520
LM2588T-12SLM04404600353250011002356520
LM2588T-3.3SLM04404600353250011002356520
LM2588T-5.0SLM04404600353250011002356520
LM2588T-ADJSLM04404600353250011002356520

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.


Obsolete Versions
Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
LM2588T-12
LM2588T-ADJ
NATIONAL SEMICONDUCTOR
01 Dec 2009

[Information as of 22-Nov-2009]