LT3572 Просмотр технического описания (PDF) - Linear Technology

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LT3572

Dual Full-Bridge Piezo Driver with 900mA Boost Converter

Linear Technology 

LT3572

TYPICAL PERFORMANCE CHARACTERISTICS

Feedback Pin Voltage vs

Temperature

1.25

1.24

1.23

1.22

1.21

1.20

–50 –25

0 25 50 75 100 125 150

TEMPERATURE (°C)

3572 G01

Quiescent Current vs Temperature

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0

–50 –25

0 25 50 75 100 125 150

TEMPERATURE (°C)

3572 G04

Oscillator Frequency vs

Temperature

2.5

RT = 13k

2.0

1.5

RT = 35k

1.0

0.5

0

–50 –25

0 25 50 75 100 125 150

TEMPERATURE (°C)

3572 G02

SHDN Pin Current vs Temperature

10

9

VSHDN = 5V

8

7

6

5

4

VSHDN = 2.5V

3

2

1

0

–50 –25 0 25 50 75 100 125 150

TEMPERATURE (°C)

3572 G05

SS Pin Current vs Temperature

8

7

6

5

4

3

2

1

0

–50 –25

0 25 50 75 100 125 150

TEMPERATURE (°C)

3572 G03

SW Current Limit vs Temperature

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0

–50 –25

0 25 50 75 100 125 150

TEMPERATURE (°C)

3572 G06

4

SW Saturation Voltage vs

Temperature

0.50

0.45

0.40

0.35

ISW = 800mA

0.30

0.25

0.20

ISW = 400mA

0.15

0.10

0.05

0

–50 –25 0 25 50 75 100 125 150

TEMPERATURE (°C)

3572 G07

Start-Up

IIN

200mA/DIV

VOUT

20V/DIV

VOUTA

20V/DIV

PGOOD

5V/DIV

200μs/DIV

3572 G08

3572fa

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