Datasheet > LM2586S-5.0

LM2586S-5.0

更新时间： 2024-01-23 23:36:54

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
28页	780K
描述
SIMPLE SWITCHER 3A Flyback Regulator with Shutdown

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中文翻译

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数据手册
替代型号

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LM2586S-5.0 数据手册

May 1996

LM2586

SIMPLE SWITCHER^®3A Flyback Regulator with

Shutdown

General Description

Features

n Requires few external components

n Family of standard inductors and transformers

n NPN output switches 3.0A, can stand off 65V

n Wide input voltage range: 4V to 40V

The LM2586 series of regulators are monolithic integrated

circuits specifically designed for flyback, step-up (boost), and

forward converter applications. The device is available in 4

different output voltage versions: 3.3V, 5.0V, 12V, and adjust-

able.

n Adjustable switching frequency: 100 kHz to 200 kHz

n External shutdown capability

n Draws less than 60 µA when shut down

n Frequency synchronization

n Current-mode operation for improved transient

response, line regulation, and current limit

n Internal soft-start function reduces in-rush current during

start-up

n Output transistor protected by current limit, under

voltage lockout, and thermal shutdown

Requiring a minimum number of external components, these

regulators are cost effective, and simple to use. Included in

the datasheet are typical circuits of boost and flyback regula-

tors. Also listed are selector guides for diodes and capacitors

and a family of standard inductors and flyback transformers

designed to work with these switching regulators.

The power switch is a 3.0A NPN device that can stand-off

65V. Protecting the power switch are current and thermal

limiting circuits, and an undervoltage lockout circuit. This IC

contains an adjustable frequency oscillator that can be pro-

grammed up to 200 kHz. The oscillator can also be synchro-

nized with other devices, so that multiple devices can oper-

ate at the same switching frequency.

n System output voltage tolerance of 4% max over line

and load conditions

Typical Applications

n Flyback regulator

n Forward converter

n Multiple-output regulator

n Simple boost regulator

Other features include soft start mode to reduce in-rush cur-

rent during start up, and current mode control for improved

rejection of input voltage and output load transients and

cycle-by-cycle current limiting. The device also has a shut-

down pin, so that it can be turned off externally. An output

voltage tolerance of 4%, within specified input voltages and

output load conditions, is guaranteed for the power supply

system.

Flyback Regulator

DS012516-1

SIMPLE SWITCHER^®and Switchers Made Simple are registered trademarks of National Semiconductor Corporation.

DS012516

www.national.com

12 3 4 5 6 7...28

中文翻译

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LM2586S-5.0 替代型号

型号	品牌	替代类型	描述	数据表
LM2586S-5.0/NOPB	TI	功能相似	具有频率同步功能的 4V 至 40V、3A 升压宽输入电压反激式稳压器 \| KTW \| 7
LM2586S-5.0	TI	功能相似	LM2586 SIMPLE SWITCHER 3A Flyback Regulator with Shutdown
LM2586SX-5.0	TI	功能相似	LM2586 SIMPLE SWITCHER 3A Flyback Regulator with Shutdown

与LM2586S-5.0相关器件

型号	品牌	获取价格	描述	数据表
LM2586S-5.0/NOPB	TI	获取价格	具有频率同步功能的 4V 至 40V、3A 升压宽输入电压反激式稳压器 \| KTW \| 7
LM2586S-ADJ	TI	获取价格	LM2586 SIMPLE SWITCHER 3A Flyback Regulator with Shutdown
LM2586S-ADJ	NSC	获取价格	SIMPLE SWITCHER 3A Flyback Regulator with Shutdown
LM2586S-ADJ/NOPB	NSC	获取价格	IC 3 A SWITCHING REGULATOR, 200 kHz SWITCHING FREQ-MAX, PSSO7, TO-263, 7 PIN, Switching Re
LM2586S-ADJ/NOPB	TI	获取价格	SIMPLE SWITCHERÂ® 3A Flyback Regulator with S
LM2586SX-12	NSC	获取价格	SIMPLE SWITCHER 3A Flyback Regulator with Shutdown
LM2586SX-3.3	NSC	获取价格	SIMPLE SWITCHER 3A Flyback Regulator with Shutdown
LM2586SX-3.3	TI	获取价格	LM2586 SIMPLE SWITCHER 3A Flyback Regulator with Shutdown
LM2586SX-3.3/NOPB	ROCHESTER	获取价格	3A SWITCHING REGULATOR, 200kHz SWITCHING FREQ-MAX, PSSO7, TO-263, 7 PIN
LM2586SX-3.3/NOPB	TI	获取价格	SIMPLE SWITCHERÂ® 3A Flyback Regulator with S

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