Datasheet > LTM4677

LTM4677

更新时间： 2022-02-26 09:28:44

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
34页	695K
描述
25A DC/DC Step-Down Î¼Module Regulator

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LTM4677 数据手册

LTM4645

25A DC/DC Step-Down

µModule Regulator

FeaTures

DescripTion

TheLTM^®4645isa25Aoutputswitchingmodestep-down

DC/DC µModule^®(power module) regulator. Included in

the package are the switching controller, power FETs, in-

ductor and all supporting components. Operating over an

input voltage range of 4.7V to 15V, the LTM4645 supports

an output voltage range of 0.6V to 1.8V, set by a single

external resistor. Only a few input and output capacitors

are needed.

4.7V to 15V Input Voltage Range

0.6V to 1.8V Output Voltage Range

25A DC Output Current

1.2ꢀTotalDCOutputVoltageError(–40°Cto125°C)

HighReliabilityN+1PhaseRedundancySupported

InternalorExternalControlLoopCompensation

Differential Remote Sense Amplifier for Precision

Regulation

Current Mode Control/Fast Transient Response

Its high efficiency design delivers about 86% efficiency

from 12V input to 1.0V output with 25A continuous load

current. High switching frequency and a current-mode

architecture enable a very fast transient response to line

and load changes without sacrificing stability. The device

supports frequency synchronization, programmable

multiphase operation, N+1 phase redundancy, and output

voltage tracking for supply rail sequencing.

Multiphase Current Sharing Up to 150A

Built-In Temperature Monitoring

Selectable Pulse-Skipping, Burst Mode^®Operation

Soft-Start/Voltage Tracking

Frequency Synchronization

Output Overvoltage Protection

Output Overcurrent Foldback Protection

9mm × 15mm × 3.51mm BGA Package

Fault protection features include overvoltage and overcur-

rent protection. The power module is offered in a space

saving 9mm × 15mm × 3.51mm BGA package. The

LTM4645 is available with SnPb (BGA) or RoHS compli-

ant terminal finish.

applicaTions

Telecom, Networking and Industrial Equipment

Point of Load Regulation

L, LT, LTC, LTM, Linear Technology, the Linear logo, Burst Mode, µModule, LTpowerCAD

and PolyPhase are registered trademarks of Analog Devices, Inc. All other trademarks are the

property of their respective owners.

Typical applicaTion

Efficiency vs Output Current

at 1V Output

12V_IN, 1V_OUT, 25A DC/DC µModule Regulator

100

4.7µF

1µF

6.3V

2.2Ω

DRV

INTV

6V TO 15V

22µF

25V

×2

HIZB

FREQ

LTM4645

OUT

25A

43.2k

47pF

COMPa

COMPb

OSNS

–

100µF

6.3V

×4

TRACK/SS

OSNS

90.9k

5V INPUT

12V INPUT

0.1µF

SGND GND

4645 TA01a

PINS NOT USED IN THIS CIRCUIT:

LOAD CURRENT (A)

CLKOUT, MODE/PLLIN, PGOOD,

–

4645 TA01b

PHASMD, PWM, RUN, SW, TEMP , TEMP

4645f

For more information www.linear.com/LTM4645

12 3 4 5 6 7...34

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与LTM4677相关器件

型号	品牌	获取价格	描述	数据表
LTM4678	ADI	获取价格	Dual 25A or Single 50A Î¼Module Regulator wit
LTM4678EYPBF	ADI	获取价格	Dual 25A or Single 50A Î¼Module Regulator wit
LTM4678IY	ADI	获取价格	Dual 25A or Single 50A Î¼Module Regulator wit
LTM4678IYPBF	ADI	获取价格	Dual 25A or Single 50A Î¼Module Regulator wit
LTM4678Y	ADI	获取价格	Dual 25A or Single 50A Î¼Module Regulator wit
LTM4680	ADI	获取价格	Quad 31.25A or Single 125A Î¼Module Regulator
LTM4681	ADI	获取价格	Quad 31.25A or Single 125A Î¼Module Regulator
LTM4681IY	ADI	获取价格	Quad 31.25A or Single 125A Î¼Module Regulator
LTM4683	ADI	获取价格	具有数字电源系统管理功能的低 VOUT 四路 31.25A 或单路 125A μModul
LTM4686	ADI	获取价格	Quad 31.25A or Single 125A Î¼Module Regulator

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