Datasheet > LM2576R-3.3

LM2576R-3.3

更新时间： 2024-11-15 12:03:43

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
11页	413K
描述
3A, 52kHz, Step-Down Switching Regulator

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中文翻译

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数据手册

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LM2576R-3.3 数据手册

3A, 52kHz, Step-Down Switching Regulator

LM2576

FEATURES

SOP8-PP PKG

TO-220 PKG

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

z Adjustable Version Output Voltage Range, 1.23 to 37V

+/- 4% AG10Maximum Over Line and Load Conditions

z Guaranteed 3.0A Output Current

z Wide Input Voltage Range

z Requires Only 4 External Components

z 52kHz Fixed Frequency Internal Oscillator

z TTL Shutdown Capability, Low Power Standby Mode

z High Efficiency

z Uses Readily Available Standard Inductors

z Thermal Shutdown and Current Limit Protection

z Moisture Sensitivity Level 3 for SMD packages

TO-263 PKG

APPLICATION

z Simple High-Efficiency Step-Down(Buck) Regulator

z Efficient Pre-Regulator for Linear Regulators

z On-Card Switching Regulators

ORDERING INFORMATION

z Positive to Negative Converter(Buck-Boost)

z Negative Step-Up Converters

Device

Marking

Package

SOP8-PP

TO-220

LM2576DP-X.X

LM2576T-X.X

LM2576R-X.X

LM2576-X.X

z Power Supply for Battery Chargers

TO-263

DESCRIPTION

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 3.0A load with excellent line and load regulation. These

devices are available in fixed output voltages of 3.3V, 5.0V, 12V 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 0˚C to 125˚C).

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.

Dec 2011 – Rev. 1.3

- 1 -

HTC

12 3 4 5 6 7...11

中文翻译

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与LM2576R-3.3相关器件

型号	品牌	获取价格	描述	数据表
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
LM2576S-12.TR	SEMTECH	获取价格	Analog IC
LM2576S-12.TRT	SEMTECH	获取价格	Switching Regulator, Voltage-mode, 7.5A, 62kHz Switching Freq-Max, PSSO5, TO-263, 5 PIN
LM2576S-12/NOPB	TI	获取价格	LM2576/LM2576HV Series SIMPLE SWITCHERÂ® 3A S

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