Datasheet > 电源电路 > 开关式稳压器或控制器> LX1665ACN

LX1665ACN

更新时间： 2024-11-25 22:46:51

品牌	Logo	应用领域
美高森美 - MICROSEMI		稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管输出元件
页数	文件大小	规格书
17页	353K
描述
DUAL OUTPUT PWM CONTROLLERS WITH 5-BIT DAC

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中文翻译

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技术参数
数据手册

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LX1665ACN 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	DIP	包装说明：	DIP,
针数：	18	Reach Compliance Code：	not_compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.79	Is Samacsys：	N
模拟集成电路 - 其他类型：	SWITCHING CONTROLLER	控制模式：	CURRENT-MODE
控制技术：	CONSTANT OFF TIME	最大输入电压：	13.2 V
最小输入电压：	10.09 V	标称输入电压：	12 V
JESD-30 代码：	R-PDIP-T18	JESD-609代码：	e0
长度：	22.86 mm	湿度敏感等级：	1
功能数量：	1	端子数量：	18
最高工作温度：	70 °C	最低工作温度：
最大输出电流：	1.5 A	封装主体材料：	PLASTIC/EPOXY
封装代码：	DIP	封装形状：	RECTANGULAR
封装形式：	IN-LINE	峰值回流温度（摄氏度）：	260
认证状态：	Not Qualified	座面最大高度：	5.08 mm
表面贴装：	NO	切换器配置：	PUSH-PULL
最大切换频率：	200 kHz	温度等级：	COMMERCIAL
端子面层：	Tin/Lead (Sn/Pb)	端子形式：	THROUGH-HOLE
端子节距：	2.54 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	40	宽度：	7.62 mm
Base Number Matches：	1

LX1665ACN 数据手册

LX1664/64A, LX1665/65A

DUAL OUTPUT PWM CONTROLLERS WITH 5-BIT DAC

T H E I N F I N I T E P O W E R O F I N N O V A T I O N

P R O D U C T I O N D A T A S H E E T

DESCRIPTION

KEY FEATURES

I 5-bit Programmable Output For CPU Core

The LX1664/64A and LX1665/65A are

monolithic switching regulator con-

troller IC’s designed to provide a low cost,

high performance adjustable power supply

for advanced microprocessors and other

applications requiring a very fast transient

response and a high degree of accuracy.

Short-circuit Current Limiting with-

out Expensive Current Sense Resistors.

Current-sensing mechanism can use PCB

trace resistance or the parasitic resistance of

the main inductor. The LX1664A and

LX1665A have reduced current sense com-

parator threshold for optimum perfor-

mance using a sense resistor. For applica-

tions requiring a high degree of accuracy, a

conventional sense resistor can be used to

sense current.

set by a DIP switch on the motherboard, or

hardwired into the processor’s package (as

Supply

I Adjustable Linear Regulator Driver Output

I No Sense Resistor Required For Short-

Circuit Current Limiting

I Designed To Drive Either Synchronous Or

Non-Synchronous Output Stages

I Soft-Start Capability

I Modulated, Constant Off-Time Architecture

For Fast Transient Response And Simple

System Design

I Available Over-Voltage Protection (OVP)

Crowbar Driver And Power Good Flag

(LX1665 only)

in the case of Pentium^®Pro and Pentium II

processors). The 5-bit code adjusts the

output voltage between 1.30 and 2.05V in

50mVincrementsandbetween2.0and3.5V

in 100mV increments, conforming to the

Intel Corporation specification. The device

candrivedualMOSFET’sresultingintypical

efficiencies of 85 - 90% even with loads in

excess of 10 amperes. For cost sensitive

applications, the bottom MOSFET can be

replaced with a Schottky diode (non-syn-

chronous operation).

Linear Regulator Driver. The LX1664/

65 family of devices have a secondary

regulator output. This can drive a MOSFET

or bipolar transistor as a pass element to

construct a low-cost adjustable linear regu-

lator suitable for powering a 1.5V GTL+ bus

or 2.5V clock supply.

APPLICATIONS

I Socket 7 (Pentium Class) Microprocessor

Supplies (including Intel Pentium Processor,

AMD-K6^TMAnd Cyrix^®6x86^TM, Gx86^TMand

M2^TMProcessors)

Programmable Synchronous Recti-

fier Driver for CPU Core. The main

output is adjustable from 1.3V to 3.5V using

a 5-bit code. The IC can read a VID signal

I Pentium II and Deschutes Processor & L2-

(continued next page)

Cache Supplies

I Voltage Regulator Modules

IMPORTANT: For the most current data, consult LinFinity's web site: http://www.linfinity.com.

PRODUCT HIGHLIGHT

LX1665 IN A PENTIUM II SINGLE-CHIP POWER SUPPLY SOLUTION

F₁20A

12V

L₂

1µH

C₃

0.1µF

6.3V

C₅

1µF

LX1665

1500µF x3

C₂

Q₁

IRL3102

R₁

0.0025

V_C1

TDRV

GND

BDRV

V_CC

Supply Voltage

for CPU Core

L₁

INV

V_OUT

V_{CC_CORE}

VID0

VID1

VID2

VID3

VID4

L_FB

2.5µH

Q₂

IRL3303

C₁

VID0

VID1

VID2

VID3

VID4

6.3V, 1500µF x 3**

** Three capacitors for Pentium

Four capacitors for Pentium II

C₉

330µF

C_T

C₈

680pF

Q₄

Supply Voltage

For I/O Chipset or GTL+ Bus

L_DRV

IRLZ44

PWRGD

R₅

C₇

330µF

18-pin

Wide-Body SOIC

PWRGD

R₆

PACKAGE ORDER INFORMATION

Plastic DIP

16-pin

Plastic DIP

18-pin

Plastic SOIC

16-pin

Plastic SOIC Wide

18-pin

T_A(°C)

0 to 70

LX1664CN

LX1665CN

LX1664CD

LX1665CDW

LX1664ACN

LX1665ACN

LX1664ACD

LX1665ACDW

Note: All surface-mount packages are available in Tape & Reel. Append the letter "T" to part number. (e.g. LX1664CDT)

L I N F I N I T Y M I C R O E L E C T R O N I C S I N C .

11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570

Rev. 1.2 11/99

12 3 4 5 6 7...17

中文翻译

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与LX1665ACN相关器件

型号	品牌	获取价格	描述	数据表
LX1665ACN-TR	MICROSEMI	获取价格	Switching Controller
LX1665CDW	MICROSEMI	获取价格	DUAL OUTPUT PWM CONTROLLERS WITH 5-BIT DAC
LX1665CDW-TR	MICROSEMI	获取价格	Switching Controller, Current-mode, 1.5A, 200kHz Switching Freq-Max, PDSO18, ROHS COMPLIAN
LX1665CN	MICROSEMI	获取价格	DUAL OUTPUT PWM CONTROLLERS WITH 5-BIT DAC
LX1665CN-TR	MICROSEMI	获取价格	Switching Controller
LX1668	MICROSEMI	获取价格	PROGRAMMABLE MULTIPLE OUTPUT DC:DC CONTROLLER
LX1668CDW	MICROSEMI	获取价格	PROGRAMMABLE MULTIPLE OUTPUT DC:DC CONTROLLER
LX1668CDWT	MICROSEMI	获取价格	Analog IC
LX1668CDW-TR	MICROSEMI	获取价格	Switching Controller, Current-mode, 1A, 250kHz Switching Freq-Max, PDSO20, ROHS COMPLIANT,
LX1668CPW	MICROSEMI	获取价格	PROGRAMMABLE MULTIPLE OUTPUT DC:DC CONTROLLER

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