LT3599FE Ver la hoja de datos (PDF) - Linear Technology

Número de pieza

componentes Descripción

Fabricante

LT3599FE

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

Linear Technology 

LT3599

Typical Performance Characteristics TA = 25°C unless otherwise specified

SHDN/UVLO Pin Turn-On

Threshold (VSD_UVLO)

1.45

1.40

1.35

1.30

1.25

–50 –25 0 25 50 75 100 125 150

JUNCTION TEMPERATURE (°C)

3599 G01

SHDN/UVLO Pin

(Hysteresis) Current

6

5

JUST BEFORE PART TURN-ON

4

3

2

1

AFTER PART TURN-OFF

0

–50 –25 0 25 50 75 100 125 150

JUNCTION TEMPERATURE (°C)

3599 G02

VIN Current (Shutdown)

500

450

400

350

300

250

200

VIN = 30V

150

100

VIN = 3V

50

0

–50 –25 0 25 50 75 100 125 150

JUNCTION TEMPERATURE (°C)

3599 G03

VREF

1250

1240

1230

1220

VIN = 30V

VIN = 3V

1210

–50 –25 0 25 50 75 100 125 150

JUNCTION TEMPERATURE (°C)

3599 G04

LED Current vs CTRL Pin

120

ISET = 13.3k

100

80

60

40

20

0

0 0.2 0.4 0.6 0.8 1.0 1.2

CTRL PIN VOLTAGE (V)

3599 G07

Switching Frequency

3.0

Switching Frequency vs RT

10000

2.5

2.1MHz

2.0

1.5

1MHz

1.0

1000

0.5

0.2MHz

0

–50 –25 0 25 50 75 100 125 150

JUNCTION TEMPERATURE (°C)

3599 G05

100

10

100

RT (k)

1000

3599 G06

Soft-Start Pin Current

13

12

11

10

9

8

7

–50 –25 0 25 50 75 100 125 150

JUNCTION TEMPERATURE (°C)

3599 G08

TSET Pin Threshold

vs Junction Temperature

900

850

800

750

700

650

600

550

500

0

25 50 75 100 125 150

JUNCTION TEMPERATURE (°C)

3599 G09

3599ff

For more information www.linear.com/LT3599

5

Share Link: