LTC3563_15 datasheet(4/16 Pages) LINER

Part #	LTC3563

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

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Manufacturer	LINER [Linear Technology]

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LTC3563

4

3563f

Load Step

Regulated Output Voltage

vs Temperature

Oscillator Frequency

vs Temperature

Oscillator Frequency

vs Supply Voltage

Output Voltage vs Supply Voltage

Output Voltage vs Load Current

Load Step

TYPICAL PERFOR A CE CHARACTERISTICS T

A = 25°C unless otherwise speciﬁed.

IL

500mA/DIV

ILOAD

500mA/DIV

VIN = 3.6V

VOUT = 1.87V

ILOAD = 0A TO 500mA

20

µs/DIV

3563 G04

VOUT

100mV/DIV

AC COUPLED

VOUT

100mV/DIV

AC COUPLED

IL

500mA/DIV

VIN = 3.6V

VOUT = 1.87V

ILOAD = 30mA TO 500mA

20

µs/DIV

3563 G05

ILOAD

500mA/DIV

VOUT

100mV/DIV

AC COUPLED

IL

500mA/DIV

VIN = 3.6V

VOUT = 1.28V

ILOAD = 0mA TO 500mA

20

µs/DIV

3563 G06

ILOAD

500mA/DIV

Load Step

VOUT

100mV/DIV

AC COUPLED

IL

500mA/DIV

VIN = 3.6V

VOUT = 1.28V

ILOAD = 30mA TO 500mA

20

µs/DIV

3563 G07

ILOAD

500mA/DIV

TEMPERATURE (

°C)

–50

1.28

1.29

1.31

1.30

25

75

3563 G08

1.27

1.26

–25

0

50

100

125

1.25

1.24

VSEL = 0V

TEMPERATURE (

°C)

–50

–25

2.0

2.2

2.5

0

50

75

3563 G09

2.1

2.4

2.3

25

100

125

SUPPLY VOLTAGE (V)

2.2

2.3

2.4

56

3563 G10

2.1

2.0

1.8

2

3

4

1.9

2.7

2.5

2.6

INPUT VOLTAGE (V)

2

–0.5

–0.4

–0.2

–0.1

0

0.5

0.2

3

4

4.5

3563 G11

–0.3

0.3

0.4

0.1

2.5

3.5

5

5.5

6

IOUT = 200mA

VOUT = 1.28V

VOUT = 1.87V

LOAD CURRENT (mA)

1

0

1.0

2.0

10

100

1000

3563 G12

–1.0

–0.5

0.5

1.5

–1.5

–2.0

VIN = 3.6V

VOUT = 1.28V

VOUT = 1.87V

Burst Mode

OPERATION

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