LM2575T-15 National Semiconductor, LM2575T-15 Datasheet

LM2575T-15

Manufacturer Part Number

LM2575T-15

Description

Voltage Regulator IC

Manufacturer

National Semiconductor

Datasheets

1.LM2575T-5.0.pdf (28 pages)

2.LM2575T-5.0.pdf (25 pages)

3.LM2575T-5.0.pdf (25 pages)

4.LM2575T-15.pdf (10 pages)

Specifications of LM2575T-15

No. Of Pins

Output Current

Peak Reflow Compatible (260 C)

Output Voltage

15V

Termination Type

Through Hole

Supply Voltage Max

40V

Leaded Process Compatible

Mounting Type

Through Hole

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

LM2575T-15

Manufacturer:

Quantity:

500

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

LM2575T-15G

Manufacturer:

ON Semiconductor

Quantity:

135

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

LM2575T-15G

Manufacturer:

ON Semiconductor

Quantity:

1 100

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FEATURES

DESCRIPTION/ORDERING INFORMATION

The LM2575 greatly simplifies the design of switching power supplies by conveniently providing all the active

functions needed for a step-down (buck) switching regulator in an integrated circuit. Accepting a wide input

voltage range and available in an adjustable output version, the LM2575 has an integrated switch capable of

delivering 1 A of load current, with excellent line and load regulation. The device also offers internal frequency

compensation, a fixed-frequency oscillator, cycle-by-cycle current limiting, and thermal shutdown. In addition, a

manual shutdown is available via an external ON/OFF pin.

The LM2575 represents a superior alternative to popular three-terminal linear regulators. Due to its high

efficiency, it significantly reduces the size of the heat sink and, in many cases, no heat sink is required.

Optimized for use with standard series of inductors available from several different manufacturers, the LM2575

greatly simplifies the design of switch-mode power supplies by requiring a minimal addition of only four to six

external components for operation.

The LM2575 is characterized for operation over the virtual junction temperature range of –40 C to 125 C.

(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

–40 C to 125 C

Adjustable With a Range of 1.23 V to 37 V and

Temperature Conditions

Specified 1-A Output Current

Wide Input Voltage Range 4.75 V to 40 V

Uses Readily Available Standard Inductors

52-kHz (Typ) Fixed-Frequency Internal

Oscillator

TTL Shutdown Capability With 50- A (Typ)

Standby Current

High Efficiency as High as 88% (Typ)

Thermal Shutdown and Current-Limit

Protection With Cycle-by-Cycle Current

Limiting

For the Full Offering of Voltages (Including

Fixed-Output Options) and Packages

(Including TO-263), see TL2575 Datasheet

www.ti.com/sc/package.

4% Regulation (Max) Over Line, Load, and

www.ti.com

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

(NOM)

ADJ

PDIP – N

PACKAGE

1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATOR

ORDERING INFORMATION

Tube of 25

(1)

APPLICATIONS

LM2575IN

ORDERABLE PART NUMBER

Simple High-Efficiency Step-Down (Buck)

Regulator

Pre-Regulator for Linear Regulators

On-Card Switching Regulators

Positive-to-Negative Converter (Buck-Boost)

FEEDBACK

SLVS569E – JANUARY 2005 – REVISED JANUARY 2006

OUTPUT

NC − No internal connection

GND

N (PDIP) PACKAGE

(TOP VIEW)

LM2575IN

TOP-SIDE MARKING

GND

ON/OFF

LM2575

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