Datasheet > LTC3371

LTC3371

更新时间： 2022-10-12 13:23:44

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
28页	1625K
描述
20V, 4-Channel Buck DC/DC with 8x Configurable 1.5A Power Stages

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LTC3371 数据手册

LTC3376

20V, 4-Channel Buck DC/DC with

8x Configurable 1.5A Power Stages

FEATURES

DESCRIPTION

The LTC^®3376 is a highly flexible multioutput power

supply IC. The device includes four synchronous buck

Wide V Range: 3V to 20V

Wide V

Range: 0.4V to 0.83 • V

OUT

converters, configured to share eight 1.5A power stages,

powered from independent 3V to 20V inputs. The DC/DCs

are assigned to one of fifteen power configurations via pin

strappable CFG0 to CFG3 pins. The LTC3376 includes the

integration of ceramic capacitors into the package for the

BST pins thereby saving PCB space. The common buck

switching frequency may be programmed with an external

resistor, synchronized to an external oscillator, or set to a

default internal 2MHz clock.

8× 1.5A Buck Power Stages Configurable as 1 to 4

Output Channels

15 Unique Pin Selectable Output Configurations

(1.5A to 12A per Channel)

Internal Boost Capacitors for Reduced PCB Space

No Load I 27µA 1 Buck Enabled; 42µA All Bucks

Enabled

1% V

Accuracy on All Channels

OUT

Peak Current Mode Control (Burst Mode^®

Operation/Forced Continuous)

The operating mode for all DC/DCs may be programmed

via the SYNC/MODE pin for Burst Mode or forced continu-

ous mode operation. The PGOOD1 to PGOOD4 outputs

indicate when each enabled DC/DC is within a specified

percentage of its final output.

Precision RUN Inputs, Individual PGOOD Outputs for

Power Sequencing

1MHz to 3MHz Frequency (RT Programmable, PLL

SYNC, or Internal 2MHz Oscillator)

TEMP Pin Output Indicates Die Temperature

Output Current Monitors

Current monitors allow for external monitoring of each

buck’s load. The EXTV pin allows for the internal cir-

Differential Output Sense

cuitry to run from a 3V to 5.5V rail for improved efficiency.

APPLICATIONS

Precision RUN pin thresholds facilitate power-up sequenc-

ing. The LTC3376 is available in a 64 lead 7mm × 7mm

BGA (0.8mm ball pitch).

Telecom/Industrial

12V Distributed Power Systems

All registered trademarks and trademarks are the property of their respective owners.

TYPICAL APPLICATION

1.5A Buck Efficiency vs I_LOAD, V_OUT=5V

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