Datasheet > LX1672-05CPWTR

LX1672-05CPWTR

更新时间： 2024-11-11 21:06:27

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
20页	358K
描述
1A DUAL SWITCHING CONTROLLER, 575kHz SWITCHING FREQ-MAX, PDSO28, PLASTIC, TSSOP-28

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LX1672-05CPWTR 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：	unknown	风险等级：	5.2
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：	575 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

LX1672-05CPWTR 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

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与LX1672-05CPWTR相关器件

型号	品牌	获取价格	描述	数据表
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,
LX1673-03CPW	MICROSEMI	获取价格	High Frequency PWM Regulator
LX1673-03CPW-TR	MICROSEMI	获取价格	Switching Controller, Voltage-mode, 1A, 345kHz Switching Freq-Max, PDSO20, ROHS COMPLIANT,

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