LM2576D2T-12 ON Semiconductor, LM2576D2T-12 Datasheet

LM2576D2T-12

Manufacturer Part Number

LM2576D2T-12

Description

EASY SWITCHER 3.0 A STEP.DOWN VOLTAGE REGULATOR

Manufacturer

ON Semiconductor

Datasheet

1.LM2576D2T-12.pdf (28 pages)

Available stocks

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Manufacturer

Quantity

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Company:

Bonase Electronics (HK) Co., Limited

Part Number:

LM2576D2T-12G

Manufacturer:

ABCO

Quantity:

576

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Easy Switcher

Step-Down Voltage Regulator

suited for easy and convenient design of a step–down switching regulator

(buck converter). All circuits of this series are capable of driving a 3.0 A load

with excellent line and load regulation. These devices are available in fixed

output voltages of 3.3 V, 5.0 V, 12 V, 15 V, and an adjustable output version.

components to simplify the power supply design. Standard series of

inductors optimized for use with the LM2576 are offered by several different

inductor manufacturers.

is significantly higher in comparison with popular three–terminal linear

regulators, especially with higher input voltages. In many cases, the power

dissipated is so low that no heatsink is required or its size could be reduced

dramatically.

available from several different manufacturers. This feature greatly simplifies

the design of switch–mode power supplies.

voltage within specified input voltages and output load conditions, and 10%

on the oscillator frequency ( 2% over 0 C to 125 C). External shutdown is

included, featuring 80

includes cycle–by–cycle current limiting, as well as thermal shutdown for full

protection under fault conditions.

Features

Applications

MOTOROLA ANALOG IC DEVICE DATA

Over Line and Load Conditions

The LM2576 series of regulators are monolithic integrated circuits ideally

These regulators were designed to minimize the number of external

Since the LM2576 converter is a switch–mode power supply, its efficiency

A standard series of inductors optimized for use with the LM2576 are

The LM2576 features include a guaranteed 4% tolerance on output

3.3 V, 5.0 V, 12 V, 15 V, and Adjustable Output Versions

Adjustable Version Output Voltage Range, 1.23 to 37 V 4% Maximum

Guaranteed 3.0 A Output Current

Wide Input Voltage Range

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

Simple High–Efficiency Step–Down (Buck) Regulator

Efficient Pre–Regulator for Linear Regulators

On–Card Switching Regulators

Positive to Negative Converter (Buck–Boost)

Negative Step–Up Converters

Power Supply for Battery Chargers

A (typical) standby current. The output switch

3.0 A

LM2576T–XX

LM2576TV–XX T J = –40 to +125 C

LM2576D2T–XX

XX = Voltage Option, i.e. 3.3, 5, 12, 15 V; and ADJ for

Adjustable Output.

DEVICE TYPE/NOMINAL OUTPUT VOLTAGE

Motorola, Inc. 1999

LM2576–3.3

LM2576–5

LM2576–12

LM2576–15

LM2576–ADJ

PLASTIC PACKAGE

Device

Heatsink surface (shown as terminal 6 in case outline

connected to Pin 3.

Pin 1. V in

Heatsink surface

D2T SUFFIX

CASE 314D

CASE 314B

CASE 936A

TV SUFFIX

VOLTAGE REGULATOR

T SUFFIX

(D 2 PAK)

2. Output

3. Ground

4. Feedback

5. ON/OFF

ORDERING INFORMATION

EASY SWITCHER

3.0 A STEP–DOWN

drawing) is connected to Pin 3.

SEMICONDUCTOR

TECHNICAL DATA

LM2576

Order this document by LM2576/D

Temperature Range

Operating

1.23 V to 37 V

Surface Mount

Vertical Mount

3.3 V

5.0 V

12 V

15 V

Straight Lead

Rev 1, 07/1999

Package

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