Datasheet > LTC3556

LTC3556

更新时间： 2023-12-20 18:44:25

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
38页	839K
描述
具双通道降压和降压-升压型 DC/DC 的高效率 USB 电源管理器

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

LTC3556 数据手册

LTC3556

High Efficiency USB Power

Manager with Dual Buck

and Buck-Boost DC/DCs

FEATURES

POWER MANAGER

DESCRIPTION

The LTC^®3556 is a highly integrated power management

and battery charger IC for Li-Ion/Polymer battery applica-

tions. It includes a high efficiency current limited switch-

ing PowerPath manager with automatic load prioritization,

a battery charger, an ideal diode, and three synchronous

switching regulators (two bucks and one buck-boost).

Designed speciﬁcally for USB applications, the LTC3556’s

switching power manager automatically limits input cur-

rent to a maximum of either 100mA or 500mA for USB

applications or 1A for adapter-powered applications.

High Efﬁciency Switching PowerPath^TMController

with Bat-Track^TMAdaptive Output Control

Programmable USB or Wall Current Limit

(100mA/500mA/1A)

Full Featured Li-Ion/Polymer Battery Charger

Instant-On Operation with a Discharged Battery

1.5A Maximum Charge Current

Internal 180mΩ Ideal Diode Plus External Ideal Diode

Controller Powers Load in Battery Mode

Low No-Load I when Powered from BAT (<30µA)

The LTC3556’s switching input stage transmits nearly all

of the 2.5W available from the USB port to the system

load with minimal power wasted as heat. This feature

allows the LTC3556 to provide more power to the appli-

cation and eases the constraint of thermal budgeting in

small spaces. The two buck regulators can provide up to

400mA each and the buck-boost can deliver 1A.

DC/DCs

Dual High Efﬁciency Buck DC/DCs (400mA/400mA I

)

OUT

High Efﬁciency Buck-Boost DC/DC (1A I

All Regulators Operate at 2.25MHz

)

OUT

Dynamic Voltage Scaling on Two Buck Outputs

I C Control of Enables, Mode, Two V

Settings

OUT

ENALL Pin with Power-Up Sequence Control

Low No-Load Quiescent Current: 20µA Each

The LTC3556 is available in the low profile 28-pin (4mm

× 5mm × 0.75mm) QFN surface mount package.

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

by U.S. patents, including 6522118 and 6404251.

APPLICATIONS

HDD-Based MP3 Players, PDAs, GPS, PMPs

Other USB-Based Handheld Products

TYPICAL APPLICATION

Battery Charge Current

vs Battery Voltage

High Efficiency PowerPath Manager, Dual Buck, Buck-Boost and LDO

ꢞꢛBꢑꢢꢊꢀꢀ

ꢒ.ꢕꢍ ꢎꢈ ꢕ.ꢕꢍ

ꢎꢈ ꢈꢎꢙꢚR

ꢀꢈꢊꢉꢛ

ꢞꢛB ꢝꢈꢣꢆꢀꢃꢊꢘꢎ

ꢛꢎꢚꢆꢂꢉꢈꢢꢘ

RꢚꢇꢞꢀꢊꢎꢈR

ꢕꢌꢌ

ꢓꢌꢌ

ꢗꢌꢌ

ꢖꢌꢌ

ꢒꢌꢌ

ꢊꢌꢌ

ꢔꢌꢌ

ꢌ

BꢀꢁꢁꢂRꢃ ꢍꢎꢀRꢇꢂ ꢍꢏRRꢂꢐꢁ

ꢂꢜꢁRꢀ ꢍꢏRRꢂꢐꢁ

ꢝꢅR ꢝꢀꢙꢁꢂR ꢍꢎꢀRꢇꢚꢐꢇ

ꢝꢝꢑꢝꢍ

BꢊꢎꢎꢚRꢠ

ꢝꢙꢊRꢇꢚR

ꢋꢍ

ꢈꢆꢎꢃꢈꢘꢊꢀ

ꢀꢁꢂꢃꢄꢅ

ꢗꢌꢌꢑꢀ ꢏꢙB ꢍꢏRRꢂꢐꢁ ꢆꢚꢛꢚꢁ

ꢝꢙꢊRꢇꢚ

ꢜ

ꢎ

ꢀꢎꢝꢏꢕꢕꢐ

ꢏ.ꢏꢍꢑꢔꢕꢓꢊ

Rꢎꢝꢑꢀꢈꢢ

ꢆꢈꢢꢚR ꢀꢈꢇꢃꢝ

ꢊꢀꢢꢊꢠꢛ ꢈꢘ ꢀꢉꢈ

ꢗ

ꢄ

ꢞ ꢗꢄ

Bꢏꢙ

ꢗꢜ ꢛꢅꢟꢂ

ꢋ.ꢌꢍ ꢎꢈ ꢏ.ꢐꢍꢑꢒꢋꢋꢓꢊ

ꢣꢚꢣꢈRꢠ

ꢝꢈRꢚ

ꢤꢆ

BꢀꢁꢁꢂRꢃ ꢍꢎꢀRꢇꢂR ꢠRꢅꢇRꢀꢛꢛꢂꢟ ꢝꢅR ꢔꢀ

ꢉꢞꢊꢀ ꢙꢃꢇꢙ ꢚꢟꢟꢃꢝꢃꢚꢘꢝꢠ

ꢚꢘꢊꢀꢀ

Bꢞꢝꢡꢛ

ꢔ

ꢏ

ꢊ.ꢋ

ꢒ.ꢊ ꢒ.ꢖ ꢒ.ꢓ

ꢒ.ꢋ

ꢖ

ꢖ.ꢊ

ꢒ

BꢀꢁꢁꢂRꢃ ꢄꢅꢆꢁꢀꢇꢂ ꢈꢄꢉ

ꢙꢃꢇꢙ ꢚꢟꢟꢃꢝꢃꢚꢘꢝꢠ

BꢞꢝꢡꢂBꢈꢈꢛꢎ

ꢛꢚꢥ

ꢔ.ꢕꢍ ꢖꢄ ꢏ.ꢏꢍꢑꢗꢊ

ꢆꢇꢈꢈꢉꢊꢀꢀ

ꢒꢗꢗꢓ ꢁꢀꢌꢔꢘ

ꢙꢉꢉꢑꢃꢈ

ꢏ

ꢔ

ꢃ ꢝ

ꢃ ꢝ ꢆꢈRꢎ

ꢏꢕꢕꢐ ꢎꢊꢋꢗ

Rev. B

Document Feedback

For more information www.analog.com

12 3 4 5 6 7...38

中文翻译

下载PDF

与LTC3556相关器件

型号	品牌	获取价格	描述	数据表
LTC3556EUFD#PBF	Linear	获取价格	LTC3556 - High Efficiency USB Power Manager with Dual Buck and Buck-Boost DC/DCs; Package:
LTC3556EUFD-PBF	Linear	获取价格	High Effi ciency USB Power Manager with Dual Buck and Buck-Boost DC/DCs
LTC3556EUFD-TRPBF	Linear	获取价格	High Effi ciency USB Power Manager with Dual Buck and Buck-Boost DC/DCs
LTC3557	Linear	获取价格	USB Power Manager with Li-Ion Charger and Three Step-Down Regulators
LTC3557	ADI	获取价格	具锂离子电池充电器和三个降压型稳压器的USB电源管理器
LTC3557_15	Linear	获取价格	USB Power Manager with Li-Ion Charger and Three Step-Down Regulators
LTC3557-1	Linear	获取价格	High Efficiency Battery Charger/USB Power Manager
LTC3557-1_15	Linear	获取价格	USB Power Manager with Li-Ion Charger and Three Step-Down Regulators
LTC3557EUF#PBF	Linear	获取价格	LTC3557/LTC3557-1 - USB Power Manager with Li-Ion Charger and Three Step-Down Regulators;
LTC3557EUF-1#PBF	Linear	获取价格	LTC3557/LTC3557-1 - USB Power Manager with Li-Ion Charger and Three Step-Down Regulators;

与LTC3556相关文章

LTM4644/LTM4644-1：创新的四输出同步降压微模块调节器
2024-07-02

3
2N3500：一款多用途NPN硅晶体管的全面解析
2024-07-02

6
最详细资料解析：BA5917AFP参数说明、引脚说明
2024-07-02

10
MAX232IDR数据手册：产品特性、电气参数、替代型号推荐
2024-07-02

4

产品中心

服务支持

精选活动

关于我们

帮助中心

LTC3556

LTC3556 数据手册

与LTC3556相关器件

与LTC3556相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

LTC3556

LTC3556 数据手册

与LTC3556相关器件

与LTC3556相关文章

您还可以找

您在本页遇到什么问题？