LM5008A

更新时间： 2024-11-28 05:42:23

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	388K
描述
100V, 350 mA Constant On-Time Buck Switching 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

LM5008A 数据手册

June 26, 2009

LM5008A

100V, 350 mA Constant On-Time Buck Switching Regulator

General Description

Features

The LM5008A is a functional variant of the LM5008 COT Buck

Switching Regulator. The functional differences of the

LM5008A are: The minimum input operating voltage is 6 volts,

the on-time equation is slightly different, and the requirement

for a minimum load current is removed.

Operating input voltage range: 6V to 95V

■

Integrated 100V, N-Channel buck switch

Internal start-up regulator

No loop compensation required

Ultra-Fast transient response

The LM5008A Step Down Switching Regulator features all of

the functions needed to implement a low cost, efficient, Buck

bias regulator. This high voltage regulator contains an 100 V

N-Channel Buck Switch. The device is easy to implement and

is provided in the MSOP-8 and the thermally enhanced LLP-8

packages. The regulator is based on a control scheme using

an ON time inversely proportional to V_IN. This feature allows

the operating frequency to remain relatively constant. The

control scheme requires no loop compensation. An intelligent

current limit is implemented with forced OFF time, which is

inversely proportional to Vout. This scheme ensures short

circuit control while providing minimum foldback. Other fea-

tures include: Thermal Shutdown, V_CCunder-voltage lockout,

Gate drive under-voltage lockout, Max Duty Cycle limiter, and

a pre-charge switch.

On time varies inversely with input voltage

Operating frequency remains constant with varying line

voltage and load current

Adjustable output voltage from 2.5V

■

Highly efficient operation

Precision internal reference

Low bias current

Intelligent current limit

Thermal shutdown

Typical Applications

Non-Isolated Telecommunication Buck Regulator

■

Secondary High Voltage Post Regulator

+42V Automotive Systems

Package

MSOP - 8

■

LLP - 8 (4mm x 4mm)

Typical Application, Basic Step-Down Regulator

30074901

300749

www.national.com

12 3 4 5 6 7...16

中文翻译

下载PDF

与LM5008A相关器件

型号	品牌	获取价格	描述	数据表
LM5008A_14	TI	获取价格	350 mA Constant On-Time Buck Switching Regulator
LM5008AMM	NSC	获取价格	100V, 350 mA Constant On-Time Buck Switching Regulator
LM5008AMM/NOPB	TI	获取价格	100-V 350-mA Constant On-Time Buck Switching Regulator
LM5008AMMX	NSC	获取价格	100V, 350 mA Constant On-Time Buck Switching Regulator
LM5008AMMX/NOPB	TI	获取价格	100-V 350-mA Constant On-Time Buck Switching Regulator
LM5008ASD	NSC	获取价格	100V, 350 mA Constant On-Time Buck Switching Regulator
LM5008ASD/NOPB	TI	获取价格	100-V 350-mA Constant On-Time Buck Switching Regulator
LM5008ASDX	NSC	获取价格	100V, 350 mA Constant On-Time Buck Switching Regulator
LM5008ASDX/NOPB	TI	获取价格	100-V 350-mA Constant On-Time Buck Switching Regulator
LM5008EP	TI	获取价格	High Voltage (100V) Step Down Switching Regulator