LM22671Q

更新时间： 2024-09-15 11:33:59

品牌	Logo	应用领域
美国国家半导体 - NSC		稳压器
页数	文件大小	规格书
18页	416K
描述
500 mA SIMPLE SWITCHER?, Step-Down Voltage Regulator with Features

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

LM22671Q 数据手册

December 10, 2010

LM22671/LM22671Q

500 mA SIMPLE SWITCHER®, Step-Down Voltage

Regulator with Features

General Description

Features

The LM22671 series of regulators are monolithic integrated

circuits which provide all of the active functions for a step-

down (buck) switching regulator capable of driving up to 500

mA loads with excellent line and load regulation characteris-

tics. High efficiency (>90%) is obtained through the use of a

low ON-resistance N-channel MOSFET. The series consists

of a fixed 5V output and an adjustable version.

Wide input voltage range: 4.5V to 42V

■

Internally compensated voltage mode control

Stable with low ESR ceramic capacitors

200 mΩ N-channel MOSFET

Output voltage options:

-ADJ (outputs as low as 1.285V)

-5.0 (output fixed to 5V)

The SIMPLE SWITCHER^®concept provides for an easy to

use complete design using a minimum number of external

components and National’s WEBENCH^®design tool.

National’s WEBENCH^®tool includes features such as exter-

nal component calculation, electrical simulation, thermal sim-

ulation, and Build-It boards for easy design-in. The switching

clock frequency is provided by an internal fixed frequency os-

cillator which operates at 500 kHz. The switching frequency

can also be adjusted with an external resistor or synchronized

to an external clock up to 1 MHz. It is also possible to self-

synchronize multiple regulators to share the same switching

frequency. The LM22671 series also has built in thermal shut-

down, current limiting and an enable control input that can

power down the regulator to a low 25 µA quiescent current

standby condition. An adjustable soft-start feature is provided

by selecting an appropriate external soft-start capacitor.

±1.5% feedback reference accuracy

■

Switching frequency of 500 kHz, adjustable between 200

kHz and 1 MHz

-40°C to 125°C operating junction temperature range

Precision enable pin

■

Integrated boot diode

Adjustable soft-start

Fully WEBENCH^®enabled

Step-down and inverting buck-boost applications

LM22671Q is an Automotive Grade product that is AEC-

Q100 grade 1 qualified (-40°C to +125°C operating

junction temperature)

Package

PSOP-8 (Exposed Pad)

■

Applications

Industrial Control

■

Telecom and Datacom Systems

Embedded Systems

Automotive Telematics and Body Electronics

Conversions from Standard 24V, 12V and 5V Input Rails

■

Simplified Application Schematic

30076801

300768

www.national.com

12 3 4 5 6 7...18

中文翻译

下载PDF

与LM22671Q相关器件

型号	品牌	获取价格	描述	数据表
LM22671-Q1	TI	获取价格	LM22671/-Q1 42 V, 500 mA SIMPLE SWITCHERÂ® St
LM22671QMR-5.0	NSC	获取价格	500 mA SIMPLE SWITCHER?, Step-Down Voltage Regulator with Features
LM22671QMR-5.0	TI	获取价格	LM22671/LM22671-Q1 42V, 500mA SIMPLE SWITCHER
LM22671QMR-5.0/NOPB	TI	获取价格	暂无描述
LM22671QMR-ADJ	TI	获取价格	LM22671/LM22671-Q1 42V, 500mA SIMPLE SWITCHER
LM22671QMR-ADJ	NSC	获取价格	500 mA SIMPLE SWITCHER?, Step-Down Voltage Regulator with Features
LM22671QMR-ADJ/NOPB	TI	获取价格	LM22671/-Q1 42 V, 500 mA SIMPLE SWITCHERÂ® St
LM22671QMRE-5.0	NSC	获取价格	500 mA SIMPLE SWITCHER?, Step-Down Voltage Regulator with Features
LM22671QMRE-5.0	TI	获取价格	LM22671/LM22671-Q1 42V, 500mA SIMPLE SWITCHER
LM22671QMRE-5.0/NOPB	TI	获取价格	LM22671/-Q1 42 V, 500 mA SIMPLE SWITCHERÂ® St

与LM22671Q相关文章

摩尔斯微电子在美国约书亚树国家公园测试 Wi-Fi HaLow
2024-09-18

6
贸泽上架Tallysman TW5386智能GNSS天线
2024-09-18

6
SL74HC10N：高性能三输入与非门解析
2024-09-03

84
AIC1781A 电池充电控制器深度解析
2024-09-03

78

产品中心

服务支持

精选活动

关于我们

帮助中心

LM22671Q

LM22671Q 数据手册

与LM22671Q相关器件

与LM22671Q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

LM22671Q

LM22671Q 数据手册

与LM22671Q相关器件

与LM22671Q相关文章

您还可以找

您在本页遇到什么问题？