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LX1660

更新时间： 2024-11-23 05:44:23
品牌 Logo 应用领域
美高森美 - MICROSEMI 控制器
页数 文件大小 规格书
15页 325K
描述
ADVANCED PWM CONTROLLER

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中文翻译

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LX1660 数据手册

 浏览型号LX1660的Datasheet PDF文件第2页浏览型号LX1660的Datasheet PDF文件第3页浏览型号LX1660的Datasheet PDF文件第4页浏览型号LX1660的Datasheet PDF文件第5页浏览型号LX1660的Datasheet PDF文件第6页浏览型号LX1660的Datasheet PDF文件第7页 
LIN DOC #: 1660  
LX1660/1661  
A
D V A N C E D P W M C O N T R O L L E R  
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  
■ Designed To Drive A Synchronous Rectifier  
The LX1660 and LX1661 Are Mono-  
lithic Switching Regulator Controller  
ICs designed to provide low-cost, high-  
performance adjustable power supply for  
microprocessors and other applications  
requiring a fast transient response and a  
high degree of accuracy. They provide  
an adjustable synchronous Pulse Width  
Modulator output suitable for a power  
supply for Pentium® or other micropro-  
cessors.  
Synchronous Rectifier Driver For  
CPU Core. The devices can drive dual  
MOSFETs resulting in typical efficiencies  
of 85 - 90%, even with loads in excess of  
10A. Synchronous shutdown results in  
increased efficiency in light load applica-  
tions.  
Short-Circuit Current Limiting  
Without Expensive Current Sense Re-  
Stage — Can Also Be Used In Non-  
Synchronous Applications  
■ Soft-Start Capability  
■ Hiccup-Mode Fault Protection  
■ No Current-Sense Resistor Required For  
Current Limiting  
■ Modulated Constant Off-Time Control  
Mechanism For Fast Transient Response And  
Simple System Design  
sistors. The current sensing mechanism  
can use a PCB trace resistance or the para-  
sitic resistance of the main inductor. For  
applications requiring a high degree of  
accuracy, a conventional sense resistor  
can be used.  
Hiccup Mode Fault Protection. The  
hiccup mode is programmable and with  
pulse-by-pulse current limiting will help  
protect the power supply system and load  
in the even of a short circuit.  
Ultra-Fast Transient Response Re-  
duces System Cost. The fixed frequency  
modulated off-time architecture results in  
the fastest transient response for a given  
inductor. Adaptive voltage positioning  
(LX1661 only) requires fewer low-ESR ca-  
pacitors to meet stringent transient over-  
and under-shoot specifications.  
■ 2V, 0.5% Internal Voltage Reference Brought  
Out  
APPLICATIONS  
■ Pentium Processor Supplies  
■ AMD-K6TM Supplies  
■ Cyrix® 6x86TM Supplies  
■ Voltage Regulator Modules  
■ General Purpose DC:DC Supplies  
IMPORTANT: For the most current data, consult LinFinity's web site: http://www.linfinity.com.  
PRODUCT HIGHLIGHT  
OUTEN  
12V  
VIN 5V  
LX1661 IN SOCKET 7  
PROCESSOR SUPPLY  
APPLICATION  
C2  
C7  
Q1  
IRL3103  
16V, 1000µF  
Sanyo MV-GX or equivalent  
R14, 1%  
See Table 5  
VOUT  
U1  
LX1661  
L1  
C9  
1µF  
R1, 5m  
R15  
2.0k  
1%  
1
2
3
4
5
6
7
8
16  
5µH Toroid  
D1  
EN  
VC1  
TDRV  
PGND  
BDRV  
VCC  
C5  
C6  
15  
14  
13  
12  
11  
10  
9
OTADJ  
SGND  
VREF  
R16  
10k  
C4  
390pF  
16V, 1000µF  
Sanyo MV-GX or  
equivalent  
INV  
NINV  
HICCUP  
CT  
SYNCEN  
CS+  
R5, 1k  
C1  
390pF  
CS-  
C3  
0.1µF  
C8  
390pF  
16-pin SOIC  
R6, 1k  
PACKAGE ORDER INFORMATION  
Plastic DIP  
16-pin  
Plastic SOIC  
16-pin  
TA (°C)  
N
D
0 to 70  
LX166xCN  
LX166xCD  
Note: All surface-mount packages are available in Tape & Reel.  
Append the letter "T" to part number. (i.e. LX166xCDT)  
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  
Copyright © 1998  
Rev. 1.1 7/98  
1
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与LX1660相关器件

型号 品牌 获取价格 描述 数据表
LX1660CD MICROSEMI

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 		Switching Controller, Current-mode, 1.5A, PDSO16, LEAD FREE, PLASTIC, SOIC-16
LX1660CD-TR MICROSEMI

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 		Switching Controller, Current-mode, 1.5A, PDSO16, LEAD FREE, PLASTIC, SOIC-16
LX1661 MICROSEMI

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 		ADVANCED PWM CONTROLLER
LX1661CD MICROSEMI

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 		Switching Controller, Current-mode, 1.5A, PDSO16, LEAD FREE, PLASTIC, SOIC-16
LX1661CDT MICROSEMI

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 		Switching Controller, Current-mode, 1.5A, PDSO16, PLASTIC, SOIC-16
LX1661CD-TR MICROSEMI

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 		Switching Controller, Current-mode, 1.5A, PDIP16, LEAD FREE, PLASTIC, DIP-16
LX1661CN MICROSEMI

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 		Switching Controller, Current-mode, 1.5A, PDIP16, LEAD FREE, PLASTIC, DIP-16
LX1661CN-TR MICROSEMI

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 		Switching Controller
LX1662 MICROSEMI

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 		SINGLE-CHIP PROGRAMMABLE PWM CONTROLLERS WITH 5-BIT DAC
LX1662A MICROSEMI

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 		SINGLE-CHIP PROGRAMMABLE PWM CONTROLLERS WITH 5-BIT DAC

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