Datasheet > 电源电路 > 开关式稳压器或控制器> LM2576T-012G

LM2576T-012G

更新时间： 2024-11-01 03:06:43

品牌	Logo	应用领域
安森美 - ONSEMI		稳压器开关
页数	文件大小	规格书
28页	276K
描述
3.0 A, 15 V, Step−Down Switching Regulator

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LM2576T-012G 数据手册

LM2576

3.0 A, 15 V, Step−Down

Switching 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.

http://onsemi.com

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.

TO−220

TV SUFFIX

CASE 314B

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.

Heatsink surface connected to Pin 3

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 mA (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

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

Maximum Over Line and Load Conditions

• Guaranteed 3.0 A Output Current

D PAK

D2T SUFFIX

CASE 936A

• 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

• Moisture Sensitivity Level (MSL) Equals 1

• Pb−Free Packages are Available

Heatsink surface (shown as terminal 6 in

case outline drawing) is connected to Pin 3

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 25 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, 2006

Publication Order Number:

January, 2006 − Rev. 8

LM2576/D

12 3 4 5 6 7...28

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LM2576T-012G 替代型号

型号	品牌	替代类型	描述	数据表
LM2576TV-012G	ONSEMI	类似代替	3.0 A, 15 V, Step−Down Switching Regulator
LM2576T-12/NOPB	TI	功能相似	LM2576/LM2576HV Series SIMPLE SWITCHERÂ® 3A S
LM2576HVT-12/NOPB	TI	功能相似	LM2576/LM2576HV Series SIMPLE SWITCHERÂ® 3A S

与LM2576T-012G相关器件

型号	品牌	获取价格	描述	数据表
LM2576T-015	ONSEMI	获取价格	3.0 A, 15 V, Step−Down Switching Regulator
LM2576T-015G	ONSEMI	获取价格	7.5A SWITCHING REGULATOR, 63kHz SWITCHING FREQ-MAX, PSFM5, PLASTIC, TO-220, 5 PIN
LM2576T12	MOTOROLA	获取价格	Switching Regulator/Controller, Voltage-mode, 3A, 63kHz Switching Freq-Max, BIPolar
LM2576T-12	TGS	获取价格	regulators are monolithic integrated circuits that provide all the active functions for a
LM2576T-12	TI	获取价格	SIMPLE SWITCHERÂ® 3A Step-Down Voltage Regula
LM2576T-12	NSC	获取价格	Simple Switcher⑩ 3 Amp Step-Down Voltage Regu
LM2576T-12	HTC	获取价格	3A, 52kHz, Step-Down Switching Regulator
LM2576T-12	ONSEMI	获取价格	EASY SWITCHER 3.0 A STEP.DOWN VOLTAGE REGULATOR
LM2576T-12	MOTOROLA	获取价格	EASY SWITCHERE⑩ 3.0 A STEP-DOWN VOLTAGE REGUL
LM2576T-12	SEMTECH	获取价格	1A & 3A Miniconverter Switching Regulators

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