Datasheet > LTC3563

LTC3563

更新时间： 2023-12-20 18:45:46

品牌	Logo	应用领域
亚德诺 - ADI		转换器
页数	文件大小	规格书
16页	280K
描述
具可选输出电压的 500mA、同步降压型 DC/DC 转换器

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中文翻译

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数据手册

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LTC3563 数据手册

LTC3563

500mA, Synchronous

Step-Down DC/DC Converter

with Selectable Output Voltage

DESCRIPTIO

FEATURES

The LTC^®3563 is a high efﬁciency monolithic synchro-

nous buck converter using a constant frequency, current

■

High Efﬁciency: Up to 96%

■

Pin Selectable Output Voltage: 1.28V/1.87V

Low Ripple (<20mV ) Burst Mode^®Operation:

I = 26µA

mode architecture. A voltage select input allows the user

to program the output voltage to 1.28V or 1.87V. Supply

currentduringoperationisonly26µA,droppingto<1µAin

shutdown. The2.5Vto5.5Vinputvoltagerangemakesthe

LTC3563 ideally suited for single Li-Ion battery-powered

applications.100%dutycycleprovideslowdropoutopera-

tion, extending battery life in portable systems. Internal

power switches are optimized to provide high efﬁciency

and eliminate the need for an external Schottky diode.

■

P-P

■

Very Low Quiescent Current: Only 26µA

2.5V to 5.5V Input Voltage Range

2.25MHz Constant Frequency Operation

Low Dropout Operation: 100% Duty Cycle

No Schottky Diode Required

Internal Soft-Start Limits Inrush Current

Shutdown Mode Draws <1µA Supply Current

2% Output Voltage Accuracy

Current Mode Operation for Excellent Line and Load

Transient Response

Overtemperature Protected

Available in 2mm × 2mm 6-Lead DFN

The switching frequency is internally set at 2.25MHz,

allowing the use of small surface mount inductors and

capacitors. The LTC3563 is speciﬁcally designed to work

well with ceramic output capacitors, achieving very low

output voltage ripple and a small PCB footprint.

■

The LTC3563 is conﬁgured for the power saving Burst

Mode Operation.

, LTC, LT, LTM 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 5481178, 6580258, 6304066, 6127815, 6498466,

6611131, 5994885.

APPLICATIO S

■

Cellular Telephones

Wireless and DSL Modems

Digital Cameras

MP3 Players

PDAs and Other Handheld Devices

■

TYPICAL APPLICATIO

Efﬁciency and Power Loss vs Output Current

100

1000

100

2.2µH

OUT

1.28V/1.87V

500mA

OUT

2.7V TO 5.5V

10µF

LTC3563

CER

RUN

OUT

10µF

CER

1.28V 1.87V

SEL

3563 TA01a

GND

= 3.6V

OUT

= 1.87V

0.1

1000

0.1

100

OUTPUT CURRENT (mA)

3563 TA01b

3563f

12 3 4 5 6 7...16

中文翻译

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与LTC3563相关器件

型号	品牌	获取价格	描述	数据表
LTC3563_15	Linear	获取价格	500mA, Synchronous Step-Down DC/DC Converter with Selectable Output Voltage
LTC3563EDC	Linear	获取价格	500mA, Synchronous Step-Down DC/DC Converter with Selectable Output Voltage
LTC3563EDC#PBF	Linear	获取价格	LTC3563 - 500mA, Synchronous Step-Down DC/DC Converter with Selectable Output Voltage; Pac
LTC3563EDC#TR	Linear	获取价格	IC 1.75 A SWITCHING REGULATOR, 2700 kHz SWITCHING FREQ-MAX, PDSO6, 2 X 2 MM, PLASTIC, MO-2
LTC3563EDC#TRM	Linear	获取价格	IC 1.75 A SWITCHING REGULATOR, 2700 kHz SWITCHING FREQ-MAX, PDSO6, 2 X 2 MM, PLASTIC, MO-2
LTC3563EDC#TRMPBF	Linear	获取价格	LTC3563 - 500mA, Synchronous Step-Down DC/DC Converter with Selectable Output Voltage; Pac
LTC3563EDC#TRPBF	Linear	获取价格	LTC3563 - 500mA, Synchronous Step-Down DC/DC Converter with Selectable Output Voltage; Pac
LTC3564	Linear	获取价格	2.25MHz, 1.25A Synchronous Step-Down Regulator
LTC3564	ADI	获取价格	2.25MHz、1.25A、同步降压型稳压器
LTC3564EDCB#TRMPBF	Linear	获取价格	LTC3564 - 2.25MHz, 1.25A Synchronous Step-Down Regulator; Package: DFN; Pins: 6; Temperatu

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