Datasheet > LX1571CDM-TR

LX1571CDM-TR

更新时间： 2024-11-19 20:02:39

品牌	Logo	应用领域
美高森美 - MICROSEMI		开关光电二极管
页数	文件大小	规格书
12页	293K
描述
Switching Controller, Current-mode, 1A, PDSO8, LEAD FREE, PLASTIC, SOIC-8

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技术参数
数据手册

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LX1571CDM-TR 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Obsolete	零件包装代码：	SOIC
包装说明：	SOP,	针数：	8
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.73
模拟集成电路 - 其他类型：	SWITCHING CONTROLLER	控制模式：	CURRENT-MODE
控制技术：	PULSE WIDTH MODULATION	最大输入电压：	25 V
最小输入电压：	11 V	标称输入电压：	15 V
JESD-30 代码：	R-PDSO-G8	JESD-609代码：	e3
长度：	4.9 mm	湿度敏感等级：	1
功能数量：	1	端子数量：	8
最高工作温度：	70 °C	最低工作温度：
最大输出电流：	1 A	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE	峰值回流温度（摄氏度）：	260
认证状态：	Not Qualified	座面最大高度：	1.75 mm
表面贴装：	YES	切换器配置：	SINGLE
温度等级：	COMMERCIAL	端子面层：	MATTE TIN
端子形式：	GULL WING	端子节距：	1.27 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	40
宽度：	3.9 mm	Base Number Matches：	1

LX1571CDM-TR 数据手册

Not Recommended For new Design

LX1570 / LX1571

PHASE

MODULATED AC SYNCHRONOUS-SIDE

CONTROLLER

R E L I M I N A R Y D A T A S H E E T

H E

N F I N I T E

O W E R O F

I N N O V A T I O N

KEY FEATURES

DESCRIPTION

The LX1570/71 series of controller ICs are only approach a certain maximum duty cycle,

designed to provide all control functions in a limited by the minimum delay and the magnetic

secondary-side regulator for isolated auxiliary or BH loop characteristic of the Mag Amp core.

secondary power supplies. Auxiliary or This forces an increase in the size of the main

secondary-side controllers are used in a variety transformer as well as the output inductor,

of applications including multiple output off-line resulting in higher overall system cost. The

REPLACES COSTLY MAG-AMP

CORES WITH A LOW ON-

RESISTANCE MOSFET

LOOK-AHEAD SWITCHINGTM

ENSURES SWITCH TURN ON

BEFORE THE AC INPUT TO

ACHIEVE 100% ENERGY

TRANSFER

LOWER OVERALL SYSTEM

COST

LOWER PEAK CURRENT

STRESS ON THE PRIMARY

SWITCH

ALLOWS HIGHER OPERATING

FREQUENCY AND SMALLER

OUTPUT INDUCTOR

EASY SHORT-CIRCUIT

PROTECTION

CURRENT MODE APPROACH

ACHIEVES EXCELLENT

DYNAMIC RESPONSE

power supplies, commonly found in desktop

computers, as well as telecommunications

applications. Although they can be used in all

LX1570/71 eliminates all the disadvantages of

the Mag Amp approach as well as improving

system performance and reducing overall

secondary

output

applications

requiring system cost. The LX1570/71 is a current mode

precision regulation, they are mainly optimized controller IC that controls the duty cycle of a

for outputs delivering more than 3A current switch in series with the secondary AC output of

where standard three-terminal regulators lack the the power transformer in buck-derived

desired efficiency. For these applications, the applications, such as forward or bridge

Mag Amp regulators have traditionally been topologies. It offers features such as 100% duty

used. However, Mag Amps have several cycle operation for maximum energy transfer,

disadvantages. First, because they have to pulse-by-pulse and hiccup current limiting with

withstand the maximum input voltage during a long off-time between the cycles for reduced

short-circuit condition, they are "over designed", power dissipation, high-frequency operation for

typically by 2 times, increasing the cost and size smaller magnetics, soft start, and current mode

of the power supply. Second, Mag Amps are control for excellent dynamic response.

inherently leading edge modulators, so they can

APPLICATIONS

IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com

SECONDARY-SIDE

REGULATOR IN OFF-LINE

POWER SUPPLIES

COMPUTER POWER

SUPPLIES, 3.3V OUTPUT FOR

NEW LOW-VOLTAGE

PROCESSORS AND

MEMORIES

PRODUCT HIGHLIGHT

Aux Output

12V/ 8A

TELECOMMUNICATION AND

MILITARY DC/DC

CONVERTERS

Available Options Per Part#

C.S.

Option

C.L.

Threshold

Application

Part #

OUT

C.S.

Output

Current

<4A

Resistive

Sensing

DRV

LX1570

-0.2V

V_CC

V_FB

LX1571

Current

Trans-

former

Output

Current

>4A

LX1571

COMP

S.S.

GND

C_T

Sensing

PACKAGE ORDER INFO

Plastic DIP

8-Pin

Plastic SOIC

Ceramic DIP

8-Pin

T_A(°C)

RoHS Compliant / Pb-free

Transition DC: 0503

RoHS Compliant / Pb-free

Transition DC: 0440

0 to 70

-40 to 85

-55 to 125

LX157xCM

LX157xIM

LX157xCDM

LX157xIDM

LX157xMY

Note: Available in Tape & Reel. Append the letters “TR” to the part number (i.e. LX1570CDM-TR).

I N

I N I T Y

I C R O E L E C T R O N I C S

I N C .

Rev. 0.9.3b,2005-03-09

11861 WESTERN

VENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570

12 3 4 5 6 7...12

中文翻译

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与LX1571CDM-TR相关器件

型号	品牌	获取价格	描述	数据表
LX1571CM	MICROSEMI	获取价格	AC Synchronous. Secondary-Side Controller
LX1571CM-TR	MICROSEMI	获取价格	暂无描述
LX1571IDM	MICROSEMI	获取价格	AC Synchronous. Secondary-Side Controller
LX1571IDM-TR	MICROSEMI	获取价格	暂无描述
LX1571IM	MICROSEMI	获取价格	AC Synchronous. Secondary-Side Controller
LX1571MY	MICROSEMI	获取价格	AC Synchronous. Secondary-Side Controller
LX160M0220BPF-2230	YAGEO	获取价格	Aluminum Electrolytic Capacitor, Polarized, Aluminum (wet), 160V, 20% +Tol, 20% -Tol, 220u
LX160M0820BPF-3530	YAGEO	获取价格	Aluminum Electrolytic Capacitor, Polarized, Aluminum (wet), 160V, 20% +Tol, 20% -Tol, 820u
LX160M1000BPF-3535	YAGEO	获取价格	Aluminum Electrolytic Capacitor, Polarized, Aluminum (wet), 160V, 20% +Tol, 20% -Tol, 1000
LX160VB10RM12X20LL	ETC	获取价格	LXA/LX Series

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