LM22677Q

更新时间： 2024-10-02 11:33:59

品牌	Logo	应用领域
美国国家半导体 - NSC		稳压器开关
页数	文件大小	规格书
16页	395K
描述
5A SIMPLE SWITCHER?, Step-Down Voltage Regulator with Synchronization or Adjustable Switching Frequency

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

LM22677Q 数据手册

December 10, 2010

LM22677/LM22677Q

5A SIMPLE SWITCHER®, Step-Down Voltage Regulator

with Synchronization or Adjustable Switching Frequency

General Description

Features

The LM22677 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 5A

loads with excellent line and load regulation characteristics.

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

100 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 1MHz. It is also possible to self-

synchronize multiple regulators to share the same switching

frequency. The LM22677 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.

±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

Integrated soft-start

Fully WEBENCH^®enabled

Step-down and inverting buck-boost applications

LM22677Q is an Automotive Grade product that is AEC-

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

junction temperature)

Package

TO-263 THIN (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

30074101

300741

www.national.com

12 3 4 5 6 7...16

中文翻译

下载PDF

与LM22677Q相关器件

型号	品牌	获取价格	描述	数据表
LM22677-Q1	TI	获取价格	LM22677/-Q1 42-V, 5-A SIMPLE SWITCHERÂ®, Step
LM22677QTJ-5.0	NSC	获取价格	5A SIMPLE SWITCHER?, Step-Down Voltage Regulator with Synchronization or Adjustable Switch
LM22677QTJ-ADJ	NSC	获取价格	5A SIMPLE SWITCHER?, Step-Down Voltage Regulator with Synchronization or Adjustable Switch
LM22677QTJ-ADJ/NOPB	TI	获取价格	LM22677/-Q1 42-V, 5-A SIMPLE SWITCHERÂ®, Step
LM22677QTJE-5.0	NSC	获取价格	5A SIMPLE SWITCHER?, Step-Down Voltage Regulator with Synchronization or Adjustable Switch
LM22677QTJE-5.0/NOPB	TI	获取价格	LM22677/-Q1 42-V, 5-A SIMPLE SWITCHERÂ®, Step
LM22677QTJE-ADJ	NSC	获取价格	5A SIMPLE SWITCHER?, Step-Down Voltage Regulator with Synchronization or Adjustable Switch
LM22677QTJE-ADJ/NOPB	TI	获取价格	LM22677/-Q1 42-V, 5-A SIMPLE SWITCHERÂ®, Step
LM22677TJ-5.0	NSC	获取价格	5A SIMPLE SWITCHER®, Step-Down Voltage Regula
LM22677TJ-5.0/NOPB	TI	获取价格	LM22677/-Q1 42-V, 5-A SIMPLE SWITCHERÂ®, Step

与LM22677Q相关文章

塔塔电子与力积电达成技术转让协议，携手建设印度首座晶圆厂
2024-09-29

38
英特尔震撼发布：128核心256线程的至强6性能核处理器
2024-09-29

32
SK海力士量产12层HBM3E，容量高达36GB
2024-09-27

29
意法半导体传感器驱动Sphere，开启沉浸式电影新时代
2024-09-27

40

产品中心

服务支持

精选活动

关于我们

帮助中心

LM22677Q

LM22677Q 数据手册

与LM22677Q相关器件

与LM22677Q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

LM22677Q

LM22677Q 数据手册

与LM22677Q相关器件

与LM22677Q相关文章

您还可以找

您在本页遇到什么问题？