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LM2575  Product Folder

SIMPLE SWITCHER 1A Step-Down Voltage Regulator
  

See Also:		   
LM2595 - more efficient
     LM2598 - improved switching frequency, efficiency
     LM2672 - has sync pin, improved switching frequency and efficiency
     LM2675 - improved input and output voltage, switching frequency.
Generic P/N 2575
General
Description		 Features Datasheet Package
& Models		 Samples
& Pricing		 Reliability
Metrics		 Design
Tools		 Application
Notes

WEBENCH Live Simulation!
LM2575 Webench™ Custom
Design/Analyze/Build It
 
4.8 <=		 V in Lower
V		  
<=		 V in Upper
V		  
<= 40.0
V out 1.2 <= V <= 37.0
I out   A <= 1.00
Ambient Temperature °C <= 100

What is Webench?
  
Parametric Table
Temperature Min (deg C) -40 
Temperature Max (deg C) 125 
Multiple Output Capability No 
On/Off Pin Yes 
Error Flag No 
InputMin Voltage (Volt) 4 
InputMax Voltage (Volt) 40 
Output Current (mA) 1000 
Output Voltage (Volt) 12, 15, 3.30, 5 
Adjustable Output No, Yes 
Output Range Undefined, 1.23V-37V 
Switching Frequency (Hz) 52000 
Adj Switch Frequency No 
Sync Pin No 
Efficiency (%) 88, 75, 77 
Flyback No 
Inverting Yes 
Step-Up No 
Step-Down Yes 
RegType Switching Regulator 
-

Datasheet

TitleSize in KbytesDate
View Online
Download
Receive via Email
LM1575 LM2575 LM2575HV SIMPLE SWITCHER 1A Step-Down Voltage Regulator 643 Kbytes 20-Nov-01 View Online Download Receive via Email
LM1575 LM2575 LM2575HV SIMPLE SWITCHER 1A Step-Down Voltage Regulator (JAPANESE)
 819 Kbytes   View Online Download Receive via Email

If you have trouble printing or viewing PDF file(s), see Printing Problems.

Package Availability, Models, Samples & Pricing

Part NumberPackageStatusModelsSamples &
Electronic
Orders		Budgetary PricingStd
Pack
Size		Package
Marking
TypePinsMSL/Lead-Free AvailabilityLead
Time		QtySPICEIBISQty$US each
LM2575M-12SOIC WIDE24StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.98rail
of
30		NSUZXYTT
LM2575M
-12 P+
3-5 weeks15000
LM2575M-15SOIC WIDE24StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.98rail
of
30		NSUZXYTT
LM2575M
-15 P+
3-5 weeks10000
LM2575M-3.3SOIC WIDE24StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.98rail
of
30		NSUZXYTT
LM2575M
-3.3 P+
3-5 weeks10000
LM2575M-5.0SOIC WIDE24StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.98rail
of
30		NSUZXYTT
LM2575M
-5.0 P+
8-10 weeks20000
LM2575M-ADJSOIC WIDE24StatusFull productionN/AN/ASamples
Buy Now 		1K+$0.98rail
of
30		NSUZXYTT
LM2575M
-ADJ P+
8-10 weeks15000
LM2575MX-12SOIC WIDE24StatusFull productionN/AN/A 1K+$0.98reel
of
1000		NSUZXYTT
LM2575M
-12 P+
3-5 weeks15000
LM2575MX-15SOIC WIDE24StatusFull productionN/AN/A 1K+$0.98reel
of
1000		NSUZXYTT
LM2575M
-15 P+
3-5 weeks10000
LM2575MX-3.3SOIC WIDE24StatusFull productionN/AN/A 
Buy Now		1K+$0.98reel
of
1000		NSUZXYTT
LM2575M
-3.3 P+
3-5 weeks10000
LM2575MX-5.0SOIC WIDE24StatusFull productionN/AN/A 
Buy Now		1K+$0.98reel
of
1000		NSUZXYTT
LM2575M
-5.0 P+
8-10 weeks20000
LM2575MX-ADJSOIC WIDE24StatusFull productionN/AN/A 
Buy Now		1K+$0.98reel
of
1000		NSUZXYTT
LM2575M
-ADJ P+
8-10 weeks15000
LM2575N-12MDIP16StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.98rail
of
20		NSUZXYYTT
LM2575N
-12 P+
3-5 weeks15000
LM2575N-15MDIP16StatusFull productionN/AN/ASamples
Buy Now		1K+$0.98rail
of
20		NSUZXYYTT
LM2575N
-15 P+
3-5 weeks10000
LM2575N-5.0MDIP16StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.98rail
of
20		NSUZXYYTT
LM2575N
-5.0 P+
8-10 weeks20000
LM2575N-ADJMDIP16StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.98rail
of
20		NSUZXYYTT
LM2575N
-ADJ P+
8-10 weeks15000
LM2575T-12TO 2205StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.98rail
of
45		NSUZXYTT
LM2575T
-12 P+
7-9 weeks20000
LM2575T-15TO 2205StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.98rail
of
45		NSUZXYTT
LM2575T
-15 P+
7-9 weeks10000
LM2575T-3.3TO 2205StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.98rail
of
45		NSUZXYTT
LM2575T
-3.3 P+
7-9 weeks15000
LM2575T-5.0TO 2205StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.98rail
of
45		NSUZXYTT
LM2575T
-5.0 P+
8-10 weeks15000
LM2575T-ADJTO 2205StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.98rail
of
45		NSUZXYTT
LM2575T
-ADJ P+
8-10 weeks50000
LM2575S-12TO 2635StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.98rail
of
45		NSUZXYTT
LM2575S
-12 P+
13-15 weeks20000
LM2575S-15TO 2635StatusFull productionN/AN/A 
Buy Now 		1K+$0.98rail
of
45		NSUZXYTT
LM2575S
-15 P+
13-15 weeks10000
LM2575S-3.3TO 2635StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.98rail
of
45		NSUZXYTT
LM2575S
-3.3 P+
13-15 weeks15000
LM2575S-5.0TO 2635StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.98rail
of
45		NSUZXYTT
LM2575S
-5.0 P+
13-15 weeks15000
LM2575S-ADJTO 2635StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.98rail
of
45		NSUZXYTT
LM2575S
-ADJ P+
13-15 weeks15000
LM2575SX-12TO 2635StatusFull productionN/AN/A 1K+$0.98reel
of
500		NSUZXYTT
LM2575S
-12 P+
13-15 weeks20000
LM2575SX-15TO 2635StatusFull productionN/AN/A 
Buy Now		1K+$0.98reel
of
500		NSUZXYTT
LM2575S
-15 P+
13-15 weeks10000
LM2575SX-3.3TO 2635StatusFull productionN/AN/A 1K+$0.98reel
of
500		NSUZXYTT
LM2575S
-3.3 P+
13-15 weeks15000
LM2575SX-5.0TO 2635StatusFull productionN/AN/A 1K+$0.98reel
of
500		NSUZXYTT
LM2575S
-5.0 P+
13-15 weeks15000
LM2575SX-ADJTO 2635StatusFull productionN/AN/A 
Buy Now 		1K+$0.98reel
of
500		NSUZXYTT
LM2575S
-ADJ P+
13-15 weeks15000
LM2575-12 MDCUnpackaged DieFull productionN/AN/A   tray
of
N/A		-
N/A0
LM2575-15 MDCUnpackaged DieFull productionN/AN/A   tray
of
N/A		-
N/A0
LM2575-3.3 MDCUnpackaged DieFull productionN/AN/A   tray
of
N/A		-
N/A0
LM2575-5.0 MDCUnpackaged DieFull productionN/AN/ASamples  tray
of
N/A		-
N/A0
LM2575-ADJ MDCUnpackaged DieFull productionN/AN/ASamples  tray
of
N/A		-
N/A0
LM2575-12 MWCWaferFull productionN/AN/A   wafer jar
of
N/A		-
N/A0
LM2575-15 MWCWaferFull productionN/AN/A   wafer jar
of
N/A		-
N/A0
LM2575-3.3 MWCWaferFull productionN/AN/A   wafer jar
of
N/A		-
N/A0
LM2575-5.0 MWCWaferFull productionN/AN/A   wafer jar
of
N/A		-
N/A0
LM2575-ADJ MWCWaferFull productionN/AN/A   wafer jar
of
N/A		-
N/A0

General Description

The LM2575 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V, 15V, and an adjustable output version.

Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation and a fixed-frequency oscillator.

The LM2575 series offers a high-efficiency replacement for popular three-terminal linear regulators. It substantially reduces the size of the heat sink, and in many cases no heat sink is required.

A standard series of inductors optimized for use with the LM2575 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies.

Other features include a guaranteed ±4% tolerance on output voltage within specified input voltages and output load conditions, and ±10% on the oscillator frequency. External shutdown is included, featuring 50 µA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.

Features

  • 3.3V, 5V, 12V, 15V, and adjustable output versions
  • Adjustable version output voltage range, 1.23V to 37V (57V for HV version) ±4% max over line and load conditions
  • Guaranteed 1A output current
  • Wide input voltage range, 40V up to 60V for HV version
  • Requires only 4 external components
  • 52 kHz fixed frequency internal oscillator
  • TTL shutdown capability, low power standby mode
  • High efficiency
  • Uses readily available standard inductors
  • Thermal shutdown and current limit protection
  • P+ Product Enhancement tested

Applications

  • Simple high-efficiency step-down (buck) regulator
  • Efficient pre-regualtor for linear regulators
  • On-card switching regulators
  • Positive to negative converter (Buck-Boost)

Reliability Metrics

Part Number Process Early Failure Rate - Rejects Sample Size (EFR) PPM * Rel. Rejects Device Hours Long Term Failure Rates (FITS) MTTF
LM2575M-12SLM0350000015000003424108012
LM2575M-15SLM0350000015000003424108012
LM2575M-3.3SLM0350000015000003424108012
LM2575M-5.0SLM0350000015000003424108012
LM2575M-ADJSLM0350000015000003424108012
LM2575MX-12SLM0350000015000003424108012
LM2575MX-15SLM0350000015000003424108012
LM2575MX-3.3SLM0350000015000003424108012
LM2575MX-5.0SLM0350000015000003424108012
LM2575MX-ADJSLM0350000015000003424108012
LM2575N-12SLM0350000015000003424108012
LM2575N-15SLM0350000015000003424108012
LM2575N-5.0SLM0350000015000003424108012
LM2575N-ADJSLM0350000015000003424108012
LM2575S-12SLM0350000015000003424108012
LM2575S-15SLM0350000015000003424108012
LM2575S-3.3SLM0350000015000003424108012
LM2575S-5.0SLM0350000015000003424108012
LM2575S-ADJSLM0350000015000003424108012
LM2575SX-12SLM0350000015000003424108012
LM2575SX-15SLM0350000015000003424108012
LM2575SX-3.3SLM0350000015000003424108012
LM2575SX-5.0SLM0350000015000003424108012
LM2575SX-ADJSLM0350000015000003424108012
LM2575T-12SLM0350000015000003424108012
LM2575T-15SLM0350000015000003424108012
LM2575T-3.3SLM0350000015000003424108012
LM2575T-5.0SLM0350000015000003424108012
LM2575T-ADJSLM0350000015000003424108012

For more information on Reliablitity Metrics, please click here.


Design Tools

TitleSize in KbytesDate
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SimpleSwitcher® DC-DC Converters Design Software 9 Kbytes 28-Jul-2003 View    

If you have trouble printing or viewing PDF file(s), see Printing Problems.

Application Notes

TitleSize in KbytesDate
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-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
AN-776: Application Note 776 20 Watt Simple Switcher Forward Converter 459 Kbytes 26-Sep-02 View Online Download Receive via Email

If you have trouble printing or viewing PDF file(s), see Printing Problems.

[Information as of 15-Jan-2004]

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