LM2574-12 Motorola Inc, LM2574-12 Datasheet

LM2574-12

Manufacturer Part Number

LM2574-12

Description

EASY SWITCHERE 0.5 A STEP-DOWN VOLTAGE REGULATOR

Manufacturer

Motorola Inc

Datasheet

1.LM2574-12.pdf (24 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

LM2574-12

Manufacturer:

Quantity:

3 442

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

LM2574-12BN

Manufacturer:

Quantity:

2 000

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

LM2574-12BWM

Manufacturer:

MOT

Quantity:

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

LM2574-12YN

Manufacturer:

MicrelInc

Quantity:

2 000

Current page: 1 of 24
Download datasheet (383Kb)

Advance Information

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 0.5 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 LM2574 are offered by several different

inductor manufacturers.

is significantly higher in comparison with popular three–terminal linear

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

dissipated by the LM2574 regulator is so low, that the copper traces on the

printed circuit board are normally the only heatsink needed and no additional

heatsinking is required.

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 60

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

protection under fault conditions.

Features

Applications

This document contains information on a new product. Specifications and information herein

are subject to change without notice.

Line and Load Conditions

The LM2574 series of regulators are monolithic integrated circuits ideally

These regulators were designed to minimize the number of external

Since the LM2574 converter is a switch–mode power supply, its efficiency

The LM2574 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% max over

Guaranteed 0.5 A Output Current

Wide Input Voltage Range: 4.75 to 40 V

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 and High–Efficiency Step–Down (Buck) Regulators

Efficient Pre–regulator for Linear Regulators

On–Card Switching Regulators

Positive to Negative Converters (Buck–Boost)

Negative Step–Up Converters

Power Supply for Battery Chargers

A (typical) standby current. The output switch

0.5 A

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

Adjustable Output.

LM2574N–XX T A = –40 to +125 C

LM2574–3.3

LM2574–5

LM2574–12

LM2574–15

LM2574–ADJ

Motorola, Inc. 1997

DEVICE TYPE/NOMINAL OUTPUT VOLTAGE

Device

* No internal connection, but should be soldered to

PC board for best heat transfer.

VOLTAGE REGULATOR

ORDERING INFORMATION

EASY SWITCHER

0.5 A STEP–DOWN

Pwr Gnd

ON/OFF

Sig Gnd

PIN CONNECTIONS

SEMICONDUCTOR

TECHNICAL DATA

LM2574

PLASTIC PACKAGE

Temperature Range

Order this document by LM2574/D

N SUFFIX

CASE 626

Operating

(Top View)

Output

V in

1.23 V to 37 V

3.3 V

5.0 V

12 V

15 V

Package

DIP–8

Rev 0

Related parts for LM2574-12

Related keywords

LM2574-12 datasheet
LM2574-12 data sheet
LM2574-12 pdf datasheet
LM2574-12 component
LM2574-12 part
LM2574-12 distributor
LM2574-12 RoHS
LM2574-12 datasheet download