Datasheet > LTC3375

LTC3375

更新时间： 2022-03-19 14:42:52

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
36页	476K
描述
8-Channel Programmable, Parallelable 1A Buck DC/DCs

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LTC3375 数据手册

LTC3375

8-Channel Programmable,

Parallelable 1A Buck DC/DCs

FeaTures

DescripTion

The LTC^®3375 is a digitally programmable high efficiency

multioutput power supply IC. The DC/DCs consist of eight

8-Channel Independent Step-Down DC/DCs

Master-Slave Configurable for Up to 4A Per Output

Channel with a Single Inductor

synchronous buck converters (I

powered from independent 2.25V to 5.5V input supplies.

up to 1A each) all

OUT

Independent V Supply for Each DC/DC

(2.25V to 5.5V)

DC/DC enables, output voltages, operating modes, and

phasing may all be independently programmed over I C

or used in standalone mode via simple I/O with power-up

defaults. The DC/DCs may be used independently or in

parallel to achieve higher output currents of up to 4A per

output with a shared inductor. Alarm levels for high die

All DC/DCs Have 0.425V to V Output Voltage Range

Precision Enable Pin Thresholds for Autonomous

Sequencing (or I C Control)

1MHz to 3MHz Programmable/Synchronizable

Oscillator Frequency (2MHz Default)

I C Selectable Phasing (90° Steps) Per Channel

temperaturemayalsobeprogrammedviaI Cwithamask-

able IRQ output for monitoring DC/DC and system faults.

Programmable Power-On Reset/Watch Dog/

Pushbutton Timing

Pushbutton ON/OFF/RESET control, power-on reset, and

a watchdog timer provide flexible and reliable power-up

sequencing and system monitoring. The LTC3375 is avail-

able in a low profile 48-lead 7mm × 7mm QFN package.

Die Temperature Monitor Output

48-Lead (7mm × 7mm) QFN Package

applicaTions

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. All other trademarks are the property of their respective owners.

General Purpose Multichannel Power Supplies

Industrial/Automotive/Communications

Typical applicaTion

8-Channel 1A Multioutput Buck Regulator

4V TO 40V

SW1

IN1

Buck Efficiency vs Load

0.425V TO V

UP TO 1A

IN1

SHNT

100

ALWAYS-ON

LDO

FB1

MASTER

LTC3375

SINGLE BUCK

DUAL BUCK

TRIPLE BUCK

QUAD BUCK

FBV

SW2

IN2

SLAVE

0.425V TO V

UP TO 1A

IN2

KILL

FB2

EN1

EN2

EN3

EN4

EN5

EN6

EN7

EN8

RST

TEMP

WDI

WD0

IRQ

Burst Mode OPERATION

MASTER

= 3.3V

OUT

•

= 1.8V

= 2MHz

OSC

SLAVE

IN7

L = 2.2µH

0.425V TO V

UP TO 1A

IN7

SW7

100

1000

LOAD CURRENT (mA)

FB7

3375 TA01b

SLAVE

IN8

0.425V TO V

UP TO 1A

IN8

SW8

I C

SYNC

FB8

3375 TA01a

3375fa

For more information www.linear.com/3375

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