Datasheet > LM2576/D

LM2576/D

更新时间： 2024-10-01 23:46:47

品牌	Logo	应用领域
其他 - ETC		稳压器
页数	文件大小	规格书
28页	270K
描述
Easy Switcher? 3.0 A Step-Down Voltage Regulator

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LM2576/D 数据手册

LM2576

Easy Switcher 3.0 A

Step-Down Voltage

Regulator

The LM2576 series of regulators are monolithic integrated circuits

ideally 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.

These regulators were designed to minimize the number of external

components to simplify the power supply design. Standard series of

inductors optimized for use with the LM2576 are offered by several

different inductor manufacturers.

http://onsemi.com

TO–220

TV SUFFIX

CASE 314B

Heatsink surface connected to Pin 3

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

efficiency 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.

A standard series of inductors optimized for use with the LM2576

are available from several different manufacturers. This feature

greatly simplifies the design of switch–mode power supplies.

The LM2576 features include a guaranteed ±4% tolerance on output

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 µA (typical) standby current. The

output switch includes cycle–by–cycle current limiting, as well as

thermal shutdown for full protection under fault conditions.

TO–220

T SUFFIX

CASE 314D

Pin 1.

2. Output

3. Ground

4. Feedback

5. ON/OFF

Features

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

D PAK

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

Maximum Over Line and Load Conditions

• Guaranteed 3.0 A Output Current

D2T SUFFIX

CASE 936A

• Wide Input Voltage Range

Heatsink surface (shown as terminal 6 in

case outline drawing) is connected to Pin 3

• 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

• Moisture Sensitivity Level (MSL) Equals 1

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 24 of this data sheet.

DEVICE MARKING INFORMATION

See general marking information in the device marking

section on page 24 of this data sheet.

Applications

• 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

Semiconductor Components Industries, LLC, 2001

Publication Order Number:

February, 2001 – Rev. 2

LM2576/D

12 3 4 5 6 7...28

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与LM2576/D相关器件

型号	品牌	获取价格	描述	数据表
LM2576_05	MICREL	获取价格	52kHz Simple 3A Buck Regulator
LM2576_06	ONSEMI	获取价格	3.0 A, 15 V, Step−Down Switching Regulator
LM2576_11	HTC	获取价格	3A, 52kHz, Step-Down Switching Regulator
LM2576_12	MOTOROLA	获取价格	EASY SWITCHERER 3.0 A STEPâDOWN VOLTAGE REG
LM2576-12	FCI	获取价格	SMIPLE SWITCHER 3.0A Step-Down Voltage Regulator
LM2576-12	MOTOROLA	获取价格	Easy Switcher 3.0A Step-Down Voltage Regulator
LM2576-12BT	MICREL	获取价格	52kHz Simple 3A Buck Voltage Regulator
LM2576-12BT⒂	MICREL	获取价格	52kHz Simple 3A Buck Voltage Regulator
LM2576-12BT-LB02	MICROCHIP	获取价格	3.5A SWITCHING REGULATOR, 52kHz SWITCHING FREQ-MAX, PSFM5
LM2576-12BT-LB03	MICROCHIP	获取价格	3.5A SWITCHING REGULATOR, 52kHz SWITCHING FREQ-MAX, PSFM5

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