LT3669_15 datasheet(7/40 Pages) LINER

Part #	LT3669

Description	IO-Link Transceiver with Integrated Step-Down Regulator and LDO

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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7 / 40 page

LT3669/LT3669-2

7

3669fa

For more information www.linear.com/LT3669

TEMPERATURE (°C)

–50

0

50

75

–25

25

125

100

150

36692 G02

780

800

790

785

805

795

810

TEMPERATURE (°C)

780

800

790

785

805

795

810

36692 G01

–50

0

50

75

–25

25

125

100

150

TEMPERATURE (°C)

–50

0

50

75

41.0

43.0

42.0

41.5

43.5

42.5

44.5

44.0

–25

25

125

100

150

36692 G04

VL+ RISING

VL+ FALLING

TEMPERATURE (°C)

–50

0

50

75

1.30

1.50

1.40

1.35

1.55

1.45

1.60

–25

25

125

100

150

36692 G03

EN/UVLO RISING

EN/UVLO FALLING

5.0

6.0

7.0

5.5

6.5

7.5

TEMPERATURE (°C)

–50

0

50

75

–25

25

125

100

150

36692 G05

VL+ RISING

VL+ FALLING

0

10

15

0

0.8

0.4

0.2

1.0

0.6

1.4

1.2

5

25

20

30

35

40

36692 G06

VL+ (V)

VL+ = 24V

0

0.4

0.8

1.2

1.4

0.2

0.6

1.0

TEMPERATURE (°C)

36692 G07

–50

0

50

75

–25

25

125

100

150

TYPICAL PERFORMANCE CHARACTERISTICS

L+ Overvoltage Lockout

L+ Undervoltage Lockout

L+ Supply Current, VEN/UVLO < 0.4V

No-Load L+ Supply Current,

VEN/UVLO = VL+

No-Load L+ Supply Current,

VEN/UVLO = VL+, VTXEN2 = 0V

FBOUT Feedback Voltage

FBLDO Feedback Voltage

EN/UVLO Pin Threshold

0

2

4

1

3

5

TEMPERATURE (°C)

36692 G08

THERMAL SHUTDOWN

FRONT PAGE APPLICATION

VL+ = 24V

VTXEN = 0V

–50

0

50

75

–25

25

125

100

150

10

15

2

6

4

3

7

5

9

8

5

25

20

30

35

40

36692 G09

VL+ (V)

VTXEN1 = 5V, VTXD1 = 0V

VTXEN1 = 5V, VTXD1 = 5V

VTXEN1 = 0V

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