LT3496 datasheet(6/24 Pages) LINER

Part #	LT3496

Description	60V Triple Step-Down LED Driver Programmable Temperature Protection

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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LT3597

6

3597f

TYPICAL PERFORMANCE CHARACTERISTICS

Loop Regulation Voltage

LED Current

LED Current Matching

LED Current vs PWM Duty Cycle

LED Current vs CTRL

Adaptive Loop Operation

Boost Diode VF

Soft-Start

60V Switching Waveforms

TA = 25°C, unless otherwise noted.

0

400

500

600

700

300

200

100

10

3597 G10

0

800

8

6

4

2

DIODE CURRENT (mA)

–40°C

25°C

125°C

VOUT

20V/DIV

IL

100mA/DIV

VSW

20V/DIV

VEN/UVLO

5V/DIV

3597 G11

400µs/DIV

VOUT

20V/DIV

IL

100mA/DIV

VSW

20V/DIV

3597 G12

400ns/DIV

–50

1.1

1.2

1.0

75

125

3597 G13

0.9

1.4

1.3

50

25

0

–25

100

VFB

TEMPERATURE (°C)

VLED

(ADAPTIVE LOOP)

–50

99

100

98

75

125

3597 G14

97

103

101

102

50

25

0

–25

100

CH2

CH3

TEMPERATURE (°C)

CH1

–50

0

0.25

–0.25

75

125

3597 G15

–0.50

0.50

50

25

0

–25

100

CH2

CH3

TEMPERATURE (°C)

CH1

0.001

0.1

1

0.01

0.001

100

3597 G16

0.0001

100

10

1

0.1

0.01

DUTY CYCLE (%)

0

60

80

40

20

1.5

3597 G17

0

120

100

1.25

1

0.75

0.5

0.25

CTRL VOLTAGE (V)

VOUT

10V/DIV

VLED

10V/DIV

ILED

100mA/DIV

VSW

20V/DIV

3597 G18

400µs/DIV

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LT3496 Datasheet(PDF) 6 Page - Linear Technology

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