Datasheet > 电源电路 > 开关式稳压器或控制器> LX1672-03CPW-TR

LX1672-03CPW-TR

更新时间： 2024-11-29 11:40:51

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
页数	文件大小	规格书
20页	383K
描述
Multiple Output LoadSHARE PWM TM

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技术参数
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LX1672-03CPW-TR 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	SSOP
包装说明：	TSSOP,	针数：	28
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.2
Is Samacsys：	N	模拟集成电路 - 其他类型：	DUAL SWITCHING CONTROLLER
控制模式：	VOLTAGE-MODE	控制技术：	PULSE WIDTH MODULATION
最大输入电压：	5.5 V	最小输入电压：	4.5 V
标称输入电压：	5 V	JESD-30 代码：	R-PDSO-G28
JESD-609代码：	e3	长度：	9.7 mm
湿度敏感等级：	1	功能数量：	1
端子数量：	28	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：	TSSOP
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：	260	认证状态：	Not Qualified
座面最大高度：	1.1 mm	表面贴装：	YES
切换器配置：	PUSH-PULL	最大切换频率：	345 kHz
温度等级：	COMMERCIAL	端子面层：	MATTE TIN
端子形式：	GULL WING	端子节距：	0.65 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	40
宽度：	4.4 mm	Base Number Matches：	1

LX1672-03CPW-TR 数据手册

LX1672

Multiple Output LoadSHARE™ PWM

PRODUCTION 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 a tracking DDR capabilities.

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 incorporates fully

soft-start

sequencing

Each output can be

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

^†U.S Patents: 6,285,571,6,292,378

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. 1.0, 2005-08-10

Microsemi

Page 1

Integrated Products Division

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

12 3 4 5 6 7...20

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与LX1672-03CPW-TR相关器件

型号	品牌	获取价格	描述	数据表
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
LX1672-06CLQ	MICROSEMI	获取价格	Multiple Output LoadSHARE PWM TM
LX1672-06CLQTR	MICROSEMI	获取价格	1A DUAL SWITCHING CONTROLLER, 690kHz SWITCHING FREQ-MAX, PQCC38, PLASTIC, MLPQ-38
LX1672-06CLQ-TR	MICROSEMI	获取价格	Multiple Output LoadSHARE PWM TM
LX1673	MICROSEMI	获取价格	High Frequency PWM Regulator
LX1673-03CLQ	MICROSEMI	获取价格	High Frequency PWM Regulator
LX1673-03CLQT	MICROSEMI	获取价格	Switching Controller, Voltage-mode, 1A, 345kHz Switching Freq-Max, PQCC20, PLASTIC, MLPQ-2
LX1673-03CLQ-TR	MICROSEMI	获取价格	Switching Controller, Voltage-mode, 1A, 345kHz Switching Freq-Max, PQCC20, ROHS COMPLIANT,

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