LM2576T-12G

更新时间： 2024-11-21 13:09:19

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LM2576T-12G 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

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.

• Uses Readily Available Standard Inductors

• Thermal Shutdown and Current Limit Protection

• Moisture Sensitivity Level (MSL) Equals 1

• Pb−Free Packages are Available*

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

*For additional information on our Pb−Free strategy

and soldering details, please download the

ON Semiconductor Soldering and Mounting

Techniques Reference Manual, SOLDERRM/D.

• Power Supply for Battery Chargers

Semiconductor Components Industries, LLC, 2004

Publication Order Number:

June, 2004 − Rev. 5

LM2576/D

12 3 4 5 6 7...26

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与LM2576T-12G相关器件

型号	品牌	获取价格	描述	数据表
LM2576T-12-H	SEMTECH	获取价格	Voltage-Mode SMPS Controller
LM2576T-12-HT	SEMTECH	获取价格	暂无描述
LM2576T-12LB03	ETC	获取价格	Voltage-Mode SMPS Controller
LM2576T-12-V	SEMTECH	获取价格	Voltage-Mode SMPS Controller
LM2576T15	MOTOROLA	获取价格	IC,SMPS CONTROLLER,VOLTAGE-MODE,BIPOLAR,SIP,5PIN,PLASTIC
LM2576T-15	TGS	获取价格	regulators are monolithic integrated circuits that provide all the active functions for a
LM2576T-15	NSC	获取价格	Simple Switcher⑩ 3 Amp Step-Down Voltage Regu
LM2576T-15	ONSEMI	获取价格	EASY SWITCHER 3.0 A STEP.DOWN VOLTAGE REGULATOR
LM2576T-15	MOTOROLA	获取价格	EASY SWITCHERE⑩ 3.0 A STEP-DOWN VOLTAGE REGUL
LM2576T-15	TI	获取价格	SIMPLE SWITCHERÂ® 3A Step-Down Voltage Regula

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