Datasheet > LX1672

LX1672

更新时间： 2024-11-10 21:55:47

品牌	Logo	应用领域
美高森美 - MICROSEMI		/
页数	文件大小	规格书
20页	358K
描述
Multiple Output LoadSHARE PWM

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

LX1672 数据手册

LX1672

Multiple Output LoadSHARE™ PWM

RELIMINARY DATA SHEET

KEY FEATURES

DESCRIPTION

Up to Three Independently

Regulated Outputs

The LX1672 is a highly integrated

This patented approach also gives

power supply controller IC featuring system designers maximum flexibility with

two PWM switching regulator stages respect to MOSFET supply. Each phase

with an additional onboard linear can utilize different supply voltages, for

DDR Termination Compliant

Bi-phase Current Sharing

Outputs As Low As 0.8V

Generated From An Internal 1%

Reference

Multiphase High Current Output

Reduces Required Capacitance

Integrated High Current MOSFET

Drivers

300KHz, 500KHz and 600KHz

High Frequency Operation

Minimizes External Component

Requirements

Independent Phase Programmable

Soft-Start and Power Sequencing

Adjustable Linear Regulator Driver

Output

regulator driver.

efficient use of available supplies, while

The two constant frequency voltage- programming the ratio of current pulled

mode PWM phases can be easily from each using one of three methods (see

configured as a single Bi-Phase high application section).

current output, two independently

regulated outputs, or as a DDR memory programmable

I/O supply with tracking DDR capabilities.

The LX1672 incorporates fully

soft-start sequencing

Each output can be

termination voltage supply. Power loss configured to come up in any order

and noise, due to the ESR of the input necessary as required by the application.

capacitors, are minimized by operating

each PWM output 180° out of phase. Linear Regulator Driver output, which

This architecture also minimizes when coupled with an inexpensive

The LX1672 features an additional

capacitor

maximizing regulator response.

requirements

while MOSFET is capable of supplying up to 5A

for I/O, memory, and other supplies

No current-sense resistors

In bi-phase operation, the high surrounding today’s micro-processor

current output utilizes a patented current designs.

APPLICATIONS/BENEFITS

sharing architecture, called Forced

Each regulator voltage output is

Current Sharing^†, to allow accurate programmed via a simple voltage-divider

current sharing without the use of network. The LX1672, utilizing MOSFET

Multi-Output Power Supplies

Video Card Power Supplies

DDR, VDDQ and Termination

Supply

PC Peripherals

Portable PC Processor and I/O

Supply

expensive current sense resistors.

RDS(ON) impedance, monitors maximum

current limit conditions, in each PWM

phase without the use of expensive current

sense resistors.

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

LoadSHARE is a Trademark of Microsemi Corporation

PRODUCT HIGHLIGHT

DDR Termination

Refer to Typical

Application for

Memory Core

....

complete circuit.

12V

Graphics

Controller

Memory Bus

LX1672

DDR Memory

3.3V

I/O

PACKAGE ORDER INFO

Plastic TSSOP

28-Pin

Plastic MLPQ

38-Pin

Switching

Frequency (kHz)

T_A(°C)

RoHS Compliant / Pb-free Transition DC: 0518 RoHS Compliant / Pb-free Transition DC: 0512

0 to 70

300

500

600

LX1672-03CPW

LX1672-05CPW

LX1672-03CLQ

LX1672-06CLQ

NOTE: Available in Tape & Reel. Append the letters “TR” to the part number (i.e. LX1672-06CLQ-TR)

Rev. 0.3m, 2005-04-12

Microsemi

Page 1

Linfinity Microelectronics Division

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

12 3 4 5 6 7...20

中文翻译

下载PDF

与LX1672相关器件

型号	品牌	获取价格	描述	数据表
LX1672_0508	MICROSEMI	获取价格	Multiple Output LoadSHARE PWM TM
LX1672-03CLQ	MICROSEMI	获取价格	Multiple Output LoadSHARE PWM TM
LX1672-03CLQTR	MICROSEMI	获取价格	1A DUAL SWITCHING CONTROLLER, 345kHz SWITCHING FREQ-MAX, PQCC38, PLASTIC, MLPQ-38
LX1672-03CLQ-TR	MICROSEMI	获取价格	Multiple Output LoadSHARE PWM TM
LX1672-03CPW	MICROSEMI	获取价格	Multiple Output LoadSHARE PWM
LX1672-03CPWTR	MICROSEMI	获取价格	1A DUAL SWITCHING CONTROLLER, 345kHz SWITCHING FREQ-MAX, PDSO28, PLASTIC, TSSOP-28
LX1672-03CPW-TR	MICROSEMI	获取价格	Multiple Output LoadSHARE PWM TM
LX1672-05CPW	MICROSEMI	获取价格	Multiple Output LoadSHARE PWM
LX1672-05CPWTR	MICROSEMI	获取价格	1A DUAL SWITCHING CONTROLLER, 575kHz SWITCHING FREQ-MAX, PDSO28, PLASTIC, TSSOP-28
LX1672-05CPW-TR	MICROSEMI	获取价格	Multiple Output LoadSHARE PWM TM

与LX1672相关文章

国产厂商思特威CMOS图像传感器芯片单月出货超1亿颗，技术创新引领行业发展
2024-11-14

23
台积电5nm和3nm产能利用率达100%，半导体行业景气度持续攀升
2024-11-14

7
AMD宣布全球裁员约1000人，调整战略聚焦增长
2024-11-14

8
英伟达新AI芯片Rubin或提前半年亮相
2024-11-05

31

产品中心

服务支持

精选活动

关于我们

帮助中心

LX1672

LX1672 数据手册

与LX1672相关器件

与LX1672相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

LX1672

LX1672 数据手册

与LX1672相关器件

与LX1672相关文章

您还可以找

您在本页遇到什么问题？