LM5007

更新时间： 2024-11-27 22:31:11

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
12页	229K
描述
High Voltage (80V) Step Down Switching Regulator

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数据手册

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LM5007 数据手册

January 2004

LM5007

High Voltage (80V) Step Down Switching Regulator

General Description

Features

n Integrated 80V, 0.7A N-Channel Buck Switch

n Internal HV Vcc Regulator

The LM5007 Step Down Switching Regulator features all of

the functions needed to implement low cost, efficient, Buck

bias regulators. This high voltage regulator contains an 80 V,

0.7A N-Channel Buck Switch. The device is easy to apply

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

LLP-8 packages. The regulator is based on a hysteretic

control scheme using an on time inversely proportional to

V_IN. This feature allows the operating frequency to remain

relatively constant with load and input voltage variations. The

hysteretic control requires no control loop compensation,

while providing very fast load transient response. An intelli-

gent current limit is implemented in the LM5007 with forced

off time that is inversely proportional to V_OUT. This current

limiting scheme reduces load current foldback. Additional

protection features include: Thermal Shutdown, Vcc under-

voltage lockout, gate drive undervoltage lockout, and Max

Duty Cycle limiter.

n No Control Loop Compensation Required

n Ultra-Fast Transient Response

n On Time Varies Inversely with Line Voltage

n Operating Frequency Nearly Constant with Varying Line

Voltage

n Adjustable Output Voltage

n Highly Efficient Operation

n Precision Reference

n Low Bias Current

n Intelligent Current Limit Protection

n Thermal Shutdown

n External Shutdown Control

Typical Applications

n Non-Isolated Buck Regulator

n Secondary High Voltage Post Regulator

n +42V Automotive Systems

Package

n MSOP - 8

n LLP - 8 (4mm x 4mm)

Connection Diagram

20078302

8-Lead MSOP, LLP

Ordering Information

Order Number

LM5007MM

LM5007MMX

LM5007SD

Package Type

NSC Package Drawing

Supplied As

MSOP-8

LLP-8

MUA08A

SDC08A

1000 Units on Tape and Reel

3500 Units on Tape and Reel

Available Soon

LM5007SDX

LLP-8

Available Soon

DS200783

www.national.com

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与LM5007相关器件

型号	品牌	获取价格	描述	数据表
LM5007_08	NSC	获取价格	High Voltage (80V) Step Down Switching Regulator
LM5007_14	TI	获取价格	High Voltage (80V) Step Down Switching Regulator
LM5007_15	TI	获取价格	High Voltage 80-V Step Down Switching Regulator
LM5007EP	TI	获取价格	Enhanced Plastic High Voltage (80V) Step Down Switching Regulator
LM5007MM	TI	获取价格	High Voltage (80V) Step Down Switching Regulator
LM5007MM	NSC	获取价格	High Voltage (80V) Step Down Switching Regulator
LM5007MM/NOPB	TI	获取价格	High Voltage (80V) Step Down Switching Regulator
LM5007MMEP	TI	获取价格	暂无描述
LM5007MMEP/NOPB	TI	获取价格	SWITCHING REGULATOR, PDSO8, PLASTIC, MSOP-8
LM5007MMX	TI	获取价格	High Voltage (80V) Step Down Switching Regulator