LCPB datasheet(4/16 Pages) LINER

Numer części	LCPB

Szczegółowy opis	48V Buck Mode LED Driver in SC70 and 2mm x 2mm DFN

Download	16 Pages

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Producent	LINER [Linear Technology]

Strona internetowa	http://www.linear.com

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4 / 16 page

LT3590

4

3590f

SWITCH CURRENT (mA)

20

0.6

0.7

100

0.5

0.4

0.2

40

60

80

0.3

0.8

3590 G01

–40°C

25°C

125°C

SCHOTTKY FORWARD CURRENT (mA)

0

0.8

0.9

1.0

200

0.7

0.6

0.4

50

100

150

0.5

1.2

1.1

3590 G02

–40°C

25°C

125°C

VIN (V)

0

10

12

14

16

18

20

10

20

30

40

3590 G03

50

60

VCTRL = 0V

TA = 25°C

TEMPERATURE (°C)

–50

25

18

14

–25

0

50

12

10

20

16

75

100

125

3590 G04

VCTRL = 0V

VIN = 48V

0

400

450

500

550

600

10

20

30

40

3590 G05

50

60

VIN (V)

VCTRL = 3.3V

TA = 25°C

TEMPERATURE (°C)

–50

25

1.0

–25

0

50

0.5

0

2.0

1.5

75

100

125

3590 G06

VIN = 48V

VIN = 24V

VIN = 4.5V

1μs/DIV

VSW

20V/DIV

IL

20mA/DIV

3590 G07

VIN = 48V

ILED = 50mA

10 WHITE LEDs

L = 470μH (COILCRAFT)

40μs/DIV

CTRL

5V/DIV

ILED

50mA/DIV

VSW

50V/DIV

IL

50mA/DIV

3590 G08

VIN = 48V

ILED = 50mA

10 BLUE LEDs

TYPICAL PERFORMANCE CHARACTERISTICS

Switch Saturation Voltage

(VCESAT)

Schottky Forward Voltage Drop

Shutdown Quiescent

Current vs VIN

Shutdown Quiescent Current

vs Temperature

Quiescent Current

Schottky Leakage Current

Switching Waveform

Transient Response

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