Datasheet > LM2576R

LM2576R

更新时间： 2024-11-15 11:34:07

品牌	Logo	应用领域
韩国泰进 - HTC		稳压器开关
页数	文件大小	规格书
14页	923K
描述
3.0A, 52kHz, Step-Down Switching Regulator

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中文翻译

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LM2576R 数据手册

3.0A, 52kHz, Step-Down Switching Regulator

LM2576

FEATURES

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

Adjustable Version Output Voltage Range, 1.23 to 37V

+/- 4% AG10Maximum Over Line and Load Conditions

Guaranteed 3.0A Output Current

TO-220 PKG

Wide Input Voltage Range

Requires Only 4 External Components

52kHz Fixed Frequency Internal Oscillator

TTL Shutdown Capability, Low Power Standby Mode

High Efficiency

TO-220V PKG

Uses Readily Available Standard Inductors

Thermal Shutdown and Current Limit Protection

Moisture Sensitivity Level 3

Applications

Simple High-Efficiency Step-Down(Buck) Regulator

Efficient Pre-Regulator for Linear Regulators

On-Card Switching Regulators

TO-263 PKG

Positive to Negative Converter(Buck-Boost)

Negative Step-Up Converters

Power Supply for Battery Chargers

1. Vin 2. Output 3. Ground

4. Feedback 5. On/Off

DESCRIPTION

ORDERING INFORMATION

The LM2576 series of regulators are monolithic integrated

circuits ideally suited for easy and convenient design of a

step-down switching regulator(buck converter).

Device

Marking

Package

TO-220

TO-220V

TO-263

LM2576T-X.X

LM2576TV-X.X LM2576T-X.X

LM2576R LM2576R-X.X

All circuits of this series are capable of driving a 3.0A load

with excellent line and load regulation. These devices are

available in fixed output voltages of 3.3V, 5.0V,12V, 15V,

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.

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 0oC to 125 oC).

External shutdown is included, featuring 80 ㎂(typical) standby current. The output switch includes

cycle-bycycle current limiting, as well as thermal shutdown for full protection under fault conditions.

2008 - Ver. 1.0

HTC

- 1 -

12 3 4 5 6 7...14

中文翻译

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与LM2576R相关器件

型号	品牌	获取价格	描述	数据表
LM2576R-12	HTC	获取价格	3A, 52kHz, Step-Down Switching Regulator
LM2576R-15	ETC	获取价格	3.0A, 15V, Step-Down Switching Regulator
LM2576R-3.3	HTC	获取价格	3A, 52kHz, Step-Down Switching Regulator
LM2576R-5.0	HTC	获取价格	3A, 52kHz, Step-Down Switching Regulator
LM2576R-ADJ	HTC	获取价格	3A, 52kHz, Step-Down Switching Regulator
LM2576S	SEMTECH	获取价格	1A & 3A Miniconverter Switching Regulators
LM2576S-12	NSC	获取价格	SIMPLE SWITCHER 3A Step-Down Voltage Regulator
LM2576S-12	TI	获取价格	SIMPLE SWITCHERÂ® 3A Step-Down Voltage Regula
LM2576S-12	SEMTECH	获取价格	Switching Regulator, Voltage-mode, 7.5A, 62kHz Switching Freq-Max, BIPolar, PSSO5, TO-263,
LM2576S-12	UMW	获取价格	DC-DC芯片

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