Datasheet > LM2574/D

LM2574/D

更新时间： 2024-10-26 23:46:43

品牌	Logo	应用领域
其他 - ETC		稳压器
页数	文件大小	规格书
28页	266K
描述
Easy Switcher? 0.5A Step-Down Voltage Regulator

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

LM2574/D 数据手册

LM2574

Easy Switcher 0.5 A

Step-Down Voltage

Regulator

The LM2574 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 0.5 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 LM2574 are offered by several

different inductor manufacturers.

http://onsemi.com

SO–16W

DW SUFFIX

CASE 751G

Since the LM2574 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 most cases, the power dissipated by the LM2574 regulator is so low,

that the copper traces on the printed circuit board are normally the only

heatsink needed and no additional heatsinking is required.

PDIP–8

N SUFFIX

CASE 626

The LM2574 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 60 µA (typical) standby current. The

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

thermal shutdown for full protection under fault conditions.

PIN CONNECTIONS

Output

Sig Gnd

Features

ON/OFF

Pwr Gnd

• 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% max

over Line and Load Conditions

(Top View)

• Guaranteed 0.5 A Output Current

• Wide Input Voltage Range: 4.75 to 40 V

• Requires Only 4 External Components

• 52 kHz Fixed Frequency Internal Oscillator

• TTL Shutdown Capability, Low Power Standby Mode

• High Efficiency

Sig Gnd

ON/OFF

Output

Pwr Gnd

(Top View)

• Uses Readily Available Standard Inductors

• Thermal Shutdown and Current Limit Protection

* No internal connection, but should be soldered to

* PC board for best heat transfer.

Applications

• Simple and High–Efficiency Step–Down (Buck) Regulators

• Efficient Pre–regulator for Linear Regulators

• On–Card Switching Regulators

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 24 of this data sheet.

• Positive to Negative Converters (Buck–Boost)

• Negative Step–Up Converters

• Power Supply for Battery Chargers

DEVICE MARKING INFORMATION

See general marking information in the device marking

section on page 24 of this data sheet.

Semiconductor Components Industries, LLC, 2000

Publication Order Number:

September, 2000 – Rev. 3

LM2574/D

12 3 4 5 6 7...28

中文翻译

下载PDF

与LM2574/D相关器件

型号	品牌	获取价格	描述	数据表
LM2574_05	MICREL	获取价格	52kHz Simple 0.5A Buck Regulator
LM2574_06	ONSEMI	获取价格	0.5 A, Adjustable Output Voltage, Step−Down Switching Regulator
LM2574-12	MOTOROLA	获取价格	EASY SWITCHERE⑩ 0.5 A STEP-DOWN VOLTAGE REGUL
LM2574-12BN	MICREL	获取价格	52kHz Simple 0.5A Buck Regulator
LM2574-12BWM	MICREL	获取价格	52kHz Simple 0.5A Buck Regulator
LM2574-12BWMT&R	MICROCHIP	获取价格	Switching Regulator, Voltage-mode, 1.8A, 63kHz Switching Freq-Max, PDSO14, 0.300 INCH, SOI
LM2574-12MDC	NSC	获取价格	IC 1.8 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, UUC, DIE, Switching Regulator or
LM2574-12MWC	NSC	获取价格	IC 1.8 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, UUC, WAFER, Switching Regulator o
LM2574-15	MOTOROLA	获取价格	EASY SWITCHERE⑩ 0.5 A STEP-DOWN VOLTAGE REGUL
LM2574-15BN	ETC	获取价格	Voltage-Mode SMPS Controller

与LM2574/D相关文章

三星深化印度制造布局，供应链本地化进程加速
2024-10-29

10
芯擎科技“星辰一号”自动驾驶芯片点亮成功，2025年量产在即
2024-10-29

10
纳微科技震撼发布GaNSlim革新氮化镓功率芯片
2024-10-18

37
意法半导体发布第四代SiC技术，助力电动汽车电驱
2024-10-15

45

产品中心

服务支持

精选活动

关于我们

帮助中心

LM2574/D

LM2574/D 数据手册

与LM2574/D相关器件

与LM2574/D相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

LM2574/D

LM2574/D 数据手册

与LM2574/D相关器件

与LM2574/D相关文章

您还可以找

您在本页遇到什么问题？