Datasheet > LTC3617_15

LTC3617_15

更新时间： 2024-11-22 01:11:27

品牌	Logo	应用领域
凌特 - Linear		双倍数据速率
页数	文件大小	规格书
20页	481K
描述
6A Monolithic Synchronous Step-Down Regulator for DDR Termination

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中文翻译

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数据手册

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LTC3617_15 数据手册

LTC3617

6ꢀA MoMꢁlitlꢂAꢃSoꢂthMoMusA

ꢃiep-DMwoAReguꢁaiMhA

fMhADDRATehmloailMo

Features

Description

TheLTC^®3617isahighefficiencymonolithicsynchronous

buckregulatorutilizingacurrentmode,constantfrequency

architecture. It operates from an input voltage range of

2.25V to 5.5V and provides a regulated output voltage

equal to 0.5 • VDDQIN while sourcing and sinking up to

6A of load current. An internal amplifier provides a VTTR

output voltage equal to 0.5 • VDDQIN with an output cur-

rent capability of 1ꢀmA.

6A Output Current

2.25V to 5.5V Input Voltage Range

±±10V Output Voltage Accuracy

Opti0ized for Low Output Voltages Down to 1.5V

High Efficiency

Integrated Buffer for VTTR = VDDQIN • 0.5

Shutdown Current: <1µA

Adjustable Switching Frequency: Up to 4MHz

Optional Internal Compensation

The operating frequency is externally programmable up to

4MHz, allowing the use of small surface mount inductors.

For switching-noise-sensitive applications, the LTC3617

can be synchronized to an external clock up to 4MHz.

Internal Soft-Start

Power Good Status Output

Input Overvoltage Protected

Thermally Enhanced 24-Pin 3mm × 5mm

ForcedcontinuousmodeoperationintheLTC3617reduces

noise and RF interference. Adjustable external compensa-

tion allows the transient response to be optimized over a

wide range of loads and output capacitors.

QFN Package

applications

DDR Termination

The internal synchronous switch increases efficiency and

eliminatestheneedforanexternalcatchdiode,minimizing

external component count and board space. The LTC3617

is offered in a leadless 24-pin 3mm × 5mm thermally

enhanced QFN package.

Supports DDR, DDR2 and DDR3 Standards

Tracking Supplies

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

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

owners. Protected by U.S. Patents, including 6580258, 5481178, 6498466, 6611131.

Efficiency and Power Loss

vs Load Current

typical application

100

2.5V

22µF

×4

REF

RUN

VDDQIN

VTTR

1.25V

10ꢀm

0.1µF

0.15µH

VTT

1.25V

LTC3617

PGOOD

ITH

SGND

PGND

47µF

×2

0.1

0.01

SYNC

3617 Tm01a

0.1

LOAD CURRENT (A)

3617 TA01b

3617fa

12 3 4 5 6 7...20

中文翻译

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与LTC3617_15相关器件

型号	品牌	获取价格	描述	数据表
LTC3617IUDD#PBF	Linear	获取价格	LTC3617 - ±6A Monolithic Synchronous Step-Dow
LTC3618	ADI	获取价格	用于 DDR 终端的双通道、4MHz、±3A、同步降压型稳压器
LTC3618EFE#PBF	Linear	获取价格	LTC3618 - Dual 4MHz, ±3A Synchronous Buck Con
LTC3618EUF#PBF	Linear	获取价格	LTC3618 - Dual 4MHz, ±3A Synchronous Buck Con
LTC3618EUF#TRPBF	Linear	获取价格	LTC3618 - Dual 4MHz, ±3A Synchronous Buck Con
LTC3618IUF#TRPBF	Linear	获取价格	LTC3618 - Dual 4MHz, ±3A Synchronous Buck Con
LTC3619	ADI	获取价格	具平均输入电流限制的 400mA / 800mA 同步降压型 DC/DC 稳压器
LTC3619B	Linear	获取价格	400mA/800mA Synchronous Step-Down DC/DC with Average Input Current Limit
LTC3619B	ADI	获取价格	具平均输入电流限制的 400mA / 800mA 同步降压型 DC/DC 稳压器
LTC3619BEDD-PBF	Linear	获取价格	400mA/800mA Synchronous Step-Down DC/DC with Average Input Current Limit

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