LM5008SDXEP

更新时间： 2024-11-23 12:59:59

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德州仪器 - TI		稳压器开关
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LM5008SDXEP 数据手册

LM5008A

www.ti.com

SNVS583F –MARCH 2009–REVISED MARCH 2013

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

Check for Samples: LM5008A

FEATURES

DESCRIPTION

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 V, 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 VSSOP-8 and the thermally enhanced

WSON-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 features 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

VSSOP-8 and WSON-8 (4mm x 4mm) packages

APPLICATIONS

•

Non-Isolated Telecommunication Buck

Regulator

•

Secondary High Voltage Post Regulator

+42V Automotive Systems

Typical Application, Basic Step-Down Regulator

6V - 95V

Input

VCC

VIN

LM5008A

BST

GND

RT/SD

RCL

OUT

SHUTDOWN

FB2

RTN

GND

FB1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...23

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与LM5008SDXEP相关器件

型号	品牌	获取价格	描述	数据表
LM5009	NSC	获取价格	150 mA, 100V Step-Down Switching Regulator
LM5009	TI	获取价格	150-mA 100-V Step-Down Switching Regulator
LM5009_08	NSC	获取价格	150 mA, 100V Step-Down Switching Regulator
LM5009_14	TI	获取价格	150-mA 100-V Step-Down Switching Regulator
LM5009_15	TI	获取价格	Wide Input, 100-V,150-mA, Step-Down Switching Regulator
LM5009A	NSC	获取价格	100V, 150 mA Constant On-Time Buck Switching Regulator
LM5009A	TI	获取价格	6V 至 95V 宽输入电压、150mA 恒定导通时间非同步降压稳压器
LM5009AMM	NSC	获取价格	100V, 150 mA Constant On-Time Buck Switching Regulator
LM5009AMM/NOPB	TI	获取价格	6-95V Wide Vin, 150mA Constant On-Time Non-Synchronous Buck Regulator 8-VSSOP -40 to 125
LM5009AMMX	NSC	获取价格	100V, 150 mA Constant On-Time Buck Switching Regulator

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