LT3599FE Просмотр технического описания (PDF) - Linear Technology

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производитель

LT3599FE

4-String 120mA LED Driver with ±1.5% Current Matching

Linear Technology 

LT3599

Typical Performance Characteristics TA = 25°C unless otherwise specified

VC Pin Active and Clamp Voltages

2500

2000

VC HIGH

1500

1000

VC ACTIVE

500

0

–50 –25 0 25 50 75 100 125 150

JUNCTION TEMPERATURE (°C)

3599 G10

LED Current vs PWM Duty Cycle

100

10

1

0.1

0.01

0.01

0.1

1

10

PWM DUTY CYCLE (%)

100

3599 G11

Switch Saturation Voltage

0.40

0.35

0.30

0.25

0.20

0.15

0.10

0.05

0

0

0.5

1

1.5

2

2.5

ISW (A)

3599 G12

Switch Current Limit

2.8

2.4

2.0

1.6

1.2

0.8

0.4

–50

–25 0 25 50 75 100 125 150

JUNCTION TEMPERATURE (°C)

3599 G13

Feedback Pin Voltage

1250

1245

1240

1235

1230

1225

1220

1215

1210

1205

1200

–50 –25 0 25 50 75 100 125 150

JUNCTION TEMPERATURE (°C)

3599 G14

LED Current vs Temperature

101

100

99

98

97

–50 –25 0 25 50 75 100 125 150

JUNCTION TEMPERATURE (°C)

3599 G15

LED Current Waveforms

(0.1% PWM) (10ms Period)

LED Current Waveforms

(90% PWM) (10ms Period)

PWM

5V/DIV

SW

20V/DIV

ILED1

50mA/DIV

2µs/DIV

3599 G16

PWM

5V/DIV

SW

20V/DIV

ILED1

50mA/DIV

100µs/DIV

3599 G17

3599ff

6

For more information www.linear.com/LT3599

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