Datasheet > 电源电路 > 开关式稳压器或控制器> LM2675M-ADJ

LM2675M-ADJ

更新时间： 2024-11-25 22:22:11

品牌	Logo	应用领域
美国国家半导体 - NSC		转换器稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数	文件大小	规格书
26页	906K
描述
SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage Regulator

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中文翻译

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技术参数
数据手册
替代型号

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LM2675M-ADJ 技术参数

是否Rohs认证：	不符合	生命周期：	Transferred
包装说明：	0.150 INCH, PLASTIC, SOIC-8	Reach Compliance Code：	not_compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	3.55	模拟集成电路 - 其他类型：	SWITCHING REGULATOR
控制模式：	VOLTAGE-MODE	控制技术：	PULSE WIDTH MODULATION
最大输入电压：	40 V	最小输入电压：	6.5 V
标称输入电压：	12 V	JESD-30 代码：	R-PDSO-G8
JESD-609代码：	e0	长度：	4.9 mm
湿度敏感等级：	1	功能数量：	1
端子数量：	8	最高工作温度：	125 °C
最低工作温度：	-40 °C	最大输出电流：	2.2 A
标称输出电压：	1.21 V	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装等效代码：	SOP8,.25
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
峰值回流温度（摄氏度）：	235	认证状态：	Not Qualified
座面最大高度：	1.75 mm	子类别：	Switching Regulator or Controllers
最大供电电流 (Isup)：	3.6 mA	表面贴装：	YES
切换器配置：	BUCK	最大切换频率：	275 kHz
技术：	DMOS	温度等级：	AUTOMOTIVE
端子面层：	Tin/Lead (Sn/Pb)	端子形式：	GULL WING
端子节距：	1.27 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	30	宽度：	3.9 mm
Base Number Matches：	1

LM2675M-ADJ 数据手册

January 2005

LM2675

SIMPLE SWITCHER^®Power Converter High Efficiency

1A Step-Down Voltage Regulator

To simplify the LM2675 buck regulator design procedure,

there exists computer design software, LM267X Made

Simple version 6.0.

General Description

The LM2675 series of regulators are monolithic integrated

circuits built with a LMDMOS process. These regulators

provide all the active functions for a step-down (buck)

switching regulator, capable of driving a 1A load current with

excellent line and load regulation. These devices are avail-

able in fixed output voltages of 3.3V, 5.0V, 12V, and an

adjustable output version.

Features

n Efficiency up to 96%

n Available in SO-8, 8-pin DIP and LLP packages

n Computer Design Software LM267X Made Simple

(version 6.0)

Requiring a minimum number of external components, these

regulators are simple to use and include patented internal

frequency compensation (Patent Nos. 5,382,918 and

5,514,947) and a fixed frequency oscillator.

n Simple and easy to design with

n Requires only 5 external components

n Uses readily available standard inductors

n 3.3V, 5.0V, 12V, and adjustable output versions

n Adjustable version output voltage range: 1.21V to 37V

The LM2675 series operates at a switching frequency of

260 kHz, thus allowing smaller sized filter components than

what would be needed with lower frequency switching regu-

lators. Because of its very high efficiency ( 90%), the cop-

per traces on the printed circuit board are the only heat

sinking needed.

1.5% max output voltage tolerance over line and load

conditions

n Guaranteed 1A output load current

n 0.25Ω DMOS Output Switch

n Wide input voltage range: 8V to 40V

n 260 kHz fixed frequency internal oscillator

n TTL shutdown capability, low power standby mode

n Thermal shutdown and current limit protection

A family of standard inductors for use with the LM2675 are

available from several different manufacturers. This feature

greatly simplifies the design of switch-mode power supplies

using these advanced ICs. Also included in the datasheet

are selector guides for diodes and capacitors designed to

work in switch-mode power supplies.

Typical Applications

Other features include a guaranteed 1.5% tolerance on

output voltage within specified input voltages and output

load conditions, and 10% on the oscillator frequency. Ex-

ternal shutdown is included, featuring typically 50 µA

stand-by current. The output switch includes current limiting,

as well as thermal shutdown for full protection under fault

conditions.

n Simple High Efficiency ( 90%) Step-Down (Buck)

Regulator

n Efficient Pre-Regulator for Linear Regulators

n Positive-to-Negative Converter

Typical Application

01280301

SIMPLE SWITCHER^®is a registered trademark of National Semiconductor Corporation.

Windows^®is a registered trademark of Microsoft Corporation.

DS012803

www.national.com

12 3 4 5 6 7...26

中文翻译

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LM2675M-ADJ 替代型号

型号	品牌	替代类型	描述	数据表
TPS5420D	TI	功能相似	2-A, WIDE INPUT RANGE, STEP-DOWN SWIFT CONVERTER

与LM2675M-ADJ相关器件

型号	品牌	获取价格	描述	数据表
LM2675M-ADJ/NOPB	TI	获取价格	LM2675 SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage Regulator
LM2675M-ADJEP	NSC	获取价格	IC 2.2 A SWITCHING REGULATOR, 275 kHz SWITCHING FREQ-MAX, PDSO8, 0.150 INCH, Switching Reg
LM2675M-ADJX	NSC	获取价格	IC 2.2 A SWITCHING REGULATOR, 275 kHz SWITCHING FREQ-MAX, PDSO8, 0.150 INCH, PLASTIC, SOIC
LM2675M-ADJX	TI	获取价格	2.2A SWITCHING REGULATOR, 275kHz SWITCHING FREQ-MAX, PDSO8, 0.150 INCH, PLASTIC, SOIC-8
LM2675MX-12	TI	获取价格	LM2675 SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage
LM2675MX-12	NSC	获取价格	SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage Regulator
LM2675MX-12/NOPB	TI	获取价格	LM2675 SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage Regulator
LM2675MX-3.3	TI	获取价格	LM2675 SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage
LM2675MX-3.3	NSC	获取价格	SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage Regulator
LM2675MX-3.3/NOPB	TI	获取价格	LM2675 SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage Regulator

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