LT3965 datasheet(7/26 Pages) LINER

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LT3965/LT3965-1

39651fa

For more information www.linear.com/LT3965

TYPICAL PERFORMANCE CHARACTERISTICS

Open LED Threshold Rising vs VIN,

Temperature for VOTH[1:0] = 10

Open LED Threshold Rising vs VIN,

Temperature for VOTH[1:0] = 11

Shorted LED Threshold Falling vs

VIN, Temperature for VOTH[1:0] = 00

Shorted LED Threshold Falling vs

VIN, Temperature for VSTH[1:0] = 01

RTCLK Input Clock Frequency vs

Fading Time

RTCLK vs Fading Time

Shorted LED Threshold Falling vs

VIN, Temperature for VSTH[1:0] = 11

Shorted LED Threshold Falling vs

VIN, Temperature for VSTH[1:0] = 10

Current Out of SRC Pin vs

Temperature

VIN VOLTAGE (V)

15.0

12.0

9.0

13.5

10.5

7.5

6.0

3965 G13

SRC = 0V

–50°C

25°C

150°C

VIN VOLTAGE (V)

3965 G14

SRC = 0V

–50°C

25°C

150°C

VIN VOLTAGE (V)

1.2

1.0

1.1

0.9

0.8

3965 G15

LEDREF = 3V

SRC = 0V

–50°C

25°C

150°C

VIN VOLTAGE (V)

4.2

4.0

4.1

3.9

3.8

3965 G15

LEDREF = 3V

SRC = 0V

–50°C

25°C

150°C

FADING TIME (ms)

300

3.0

2.6

1.8

2.2

1.4

0.6

1.0

0.2

600

450

900

3965 G20

1200

750

1050

FADING UP

FADING DOWN

PWM DIMMING END POINTS

0.4% AND 99.6%

FADING TIME (ms)

300

600

450

900

3965 G21

1200

750

1050

FADING UP

FADING DOWN

PWM DIMMING END POINTS

0.4% AND 99.6%

VIN VOLTAGE (V)

3965 G18

LEDREF = 3V

SRC = 0V

–50°C

25°C

150°C

TEMPERATURE (°C)

–50

–25

100

3965 G19

150

125

SWITCH IS ON

SWITCH IS OFF

VIN VOLTAGE (V)

7.5

6.5

7.0

6.0

5.5

3965 G17

LEDREF = 3V

SRC = 0V

–50°C

25°C

150°C

TA = 25°C, unless otherwise noted.

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