LX1676CLQ-TR

更新时间： 2024-11-11 13:09:55

品牌	Logo	应用领域
美高森美 - MICROSEMI		控制器
页数	文件大小	规格书
16页	318K
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LX1676CLQ-TR 数据手册

LX1676

Mobile AMD Athlon™ VRM Controller

RODUCTION DATA SHEET

KEY FEATURES

DESCRIPTION

High Current Biphase

Operation

Outputs As Low As 0.925V

† Biphase LoadSHARE^TM

† Transient Correction Loop

Reduces Required

The LX1676 is a highly integrated maximizing regulator response.

VRM power supply controller IC A true differential input amplifier is

featuring two PWM switching used for remote voltage sensing at the

regulator stages.

processor core.

The two constant frequency

A VID code generator provides an

voltage-mode PWM phases are internal reference that will set the

configured as a single biphase high output voltage. This VID code can be

Capacitance

Differential Amplifier For

Remote Voltage Sensing

Integrated High Current

MOSFET Drivers

200KHz to 1MHz Frequency

Operation

Programmable Slew Rate

Control For Start-Up Sequence

and VID change

VID Changes On The Fly

Power Good Indicator

Short Circuit Protection

Output Over Voltage and

Under Voltage Protection

No current-sense resistors

current output core supply.

changed during operation and the

In biphase operation, the high reference will slew the output voltage to

current (>25A) output is generated by its new setting at a preset rate. During

LoadSHARE^TM

†

technique that VID changes on the fly the Power Good

balances the currents in the two indication will stay valid.

phases. Power loss and noise, due to

Current through the lower phase 1

the ESR of the input capacitors, are MOSFET will be sampled using its

minimized by operating the PWMs R_DS(ON)for current limit and shut

down.

For further protection, an over

Transient

180° out of phase.

synchronized

voltage circuit will trip at a specified

setting and clamp the output by turning

off the upper MOSFETs and turning on

the lower MOSFETs.

Correction Loop† provides except-

ional control of the output droop and

overshoot during very high di/dt load

changes, the circuit can be configured

for droop only, overshoot only or

both.

The upper MOSFET drivers will use

a bootstrap capacitor to provide the

upper drive voltage over the input

voltage range of 6 to 24 volts.

while

APPLICATIONS

AMD Mobile Athlon™ or

Duron™ Processor Core

Voltage Supply

This architecture also minimizes

capacitor

requirements

Voltage Regulator Modules

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

† Patent numbers US6292378,US6285571,US6356063, US6605931

PRODUCT HIGHLIGHT

T r a n s i e n t C o r r e c t io n L o o p

V in + 5

V i n

t o 2 4

7 0 n H

L X 1 6 7 6

V i n

t o 2 4

B it V I D

V o u t

PACKAGE ORDER INFO

Plastic TSSOP

38-Pin

Plastic MLPQ

38-Pin

T_J(°C)

RoHS Compliant / Pb-free Transition DC: 0518

RoHS Compliant / Pb-free Transition DC: 0512

0 to 70

LX1676CPW

LX1676CLQ

Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX1676CLQ-TR)

Revision: 1.0, 4/12/2005

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...16

中文翻译

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与LX1676CLQ-TR相关器件

型号	品牌	获取价格	描述	数据表
LX1676CPW	ETC	获取价格	PWM Controllers
LX1676-CPW	MICROSEMI	获取价格	Mobile AMD AthlonTM VRM Controller
LX1676-CPWT	MICROSEMI	获取价格	Switching Controller, Voltage-mode, 1.5A, 1100kHz Switching Freq-Max, PDSO38, PLASTIC, TSS
LX1676CPW-TR	MICROSEMI	获取价格	Switching Controller, Voltage-mode, 1.5A, 1100kHz Switching Freq-Max, PDSO38, ROHS COMPLIA
LX1677	MICROSEMI	获取价格	AMD64 Processor VRM Controller
LX1677CLQ	MICROSEMI	获取价格	AMD64 Processor VRM Controller
LX1677-CLQT	MICROSEMI	获取价格	Switching Controller, Voltage-mode, 1.5A, 1100kHz Switching Freq-Max, PQCC38, PLASTIC, MLP
LX1677CPW	MICROSEMI	获取价格	AMD64 Processor VRM Controller
LX1677-CPW	MICROSEMI	获取价格	1.5A SWITCHING CONTROLLER, 1100kHz SWITCHING FREQ-MAX, PDSO38, PLASTIC, TSSOP-38
LX1677-CPWT	MICROSEMI	获取价格	暂无描述

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