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LTC3563

500mA, Synchronous Step-Down DC/DC Converter with Selectable Output Voltage

Linear Technology 

LTC3563

TYPICAL APPLICATIO

Using Low Profile Components, <1mm Height

VIN

2.7V TO 5.5V

CIN*

10µF

CER

1.28V 1.87V

VIN

SW

LTC3563

RUN VOUT

VSEL

GND

2.2µH**

VOUT

1.28V/1.87V

500mA

COUT*

10µF

CER

3563 TA02a

*MURATA GRM219R60J106KE19

**TDK VLF3010AT-2R2M1R0

Efficiency vs Output Current

100

VIN = 3.6V

90

VOUT = 1.87V

80

VOUT = 1.28V

70

60

50

40

30

20

10

0

0.1

1

10

100

1000

OUTPUT CURRENT (mA)

3563 TA02b

RELATED PARTS

PART NUMBER

LTC3405/LTC3405B

LTC3406/LTC3406B

LTC3407/LTC3407-2

LTC3409

LTC3410/LTC3410B

LTC3411

LTC3542

LTC3548

LTC3561

DESCRIPTION

COMMENTS

300mA IOUT, 1.5MHz, Synchronous Step-Down DC/DC

Converter

600mA IOUT, 1.5MHz, Synchronous Step-Down DC/DC

Converter

Dual 600mA/800mA IOUT, 1.5MHz/2.25MHz, Synchronous

Step-Down DC/DC Converter

600mA IOUT, 1.7MHz/2.6MHZ, Synchronous Step-Down

DC/DC Converter

300mA IOUT, 2.25MHz, Synchronous Step-Down DC/DC

Converter

1.25A IOUT, 4MHz, Synchronous Step-Down DC/DC

Converter

500mA IOUT, 2.25MHz, Synchronous Step-Down DC/DC

Converter

Dual 400mA/800mA IOUT, 2.25MHz, Synchronous

Step-Down DC/DC Converter

1A IOUT, 4MHz Synchronous Step-Down DC/DC Converter

95% Efficiency, VIN: 2.5V to 5.5V, VOUT(MIN) = 0.8V, IQ = 20µA,

ISD < 1µA, ThinSOT Package

96% Efficiency, VIN: 2.5V to 5.5V, VOUT(MIN) = 0.6V, IQ = 20µA,

ISD < 1µA, ThinSOT Package

95% Efficiency, VIN: 2.5V to 5.5V, VOUT(MIN) = 0.6V, IQ = 40µA,

ISD < 1µA, MS10E, DFN Packages

96% Efficiency, VIN: 1.6V to 5.5V, VOUT(MIN) = 0.6V, IQ = 65µA,

ISD < 1µA, DFN Package

95% Efficiency, VIN: 2.5V to 5.5V, VOUT(MIN) = 0.8V, IQ = 26µA,

ISD < 1µA, SC70 Package

95% Efficiency, VIN: 2.5V to 5.5V, VOUT(MIN) = 0.8V, IQ = 60µA,

ISD < 1µA, MS10, DFN Packages

96% Efficiency, VIN: 2.5V to 5.5V, VOUT(MIN) = 0.6V, IQ = 26µA,

ISD < 1µA, DFN Packages

95% Efficiency, VIN: 2.5V to 5.5V, VOUT(MIN) = 0.6V, IQ = 40µA,

ISD < 1µA, MS10, DFN Packages

95% Efficiency, VIN: 2.6V to 5.5V, VOUT(MIN) = 0.8V, IQ = 240µA,

ISD < 1µA, 3mm × 3mm DFN Package

16 Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com

3563f

LT 0107 • PRINTED IN USA

© LINEAR TECHNOLOGY CORPORATION 2007

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