High-Voltage, Linear High-Brightness LED

Driver with Open-LED Fault Detect

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

Note 2: A 51I resistor is connected between SINK and a 6.5V supply to reduce power dissipation during the factory test.

Note 4: Guaranteed by design and not production tested.

(typical UVLO).

Note 7: DIM is kept high to avoid delay due to high capacitance from test setup. In applications, a 30FA pullup current charges

parasitic capacitance at DIM with negligible delay. Ensure that unnecessary capacitance is not added at DIM during the

PCB layout.

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

FAULT EVENT STATUS MEMORY

FLTS Activation Threshold

7

7.38

7.75

V

FLTS Activation Hysteresis

20

mV

LED Open Threshold

25

30

35

mV

LED Open Blanking

14

25

50

F

s

Fault Voltage

12

15

18

V

FLTS Charge Current

0.65

2.8

4.8

mA

FLTS Discharge Current

2.25

5

7.25

F

A

FLTS Threshold To Turn Off LED

Current Sink

0.95

1.3

1.65

V

DIM LOGIC

Input High Voltage

2.1

V

Input Low Voltage

0.8

V

DIM Voltage Logic Hysteresis

0.15

V

DIM Pullup Current

10

30

60

F

A

DIM Pulldown Current

0.385

1

1.5

mA

DIM Pulse Width

70

F

s

DIM Frequency

10

kHz

LEAKAGE CURRENTS

SINK Leakage Current

1

F

A

FLTS Leakage Current

1

F

A

THERMAL SHUTDOWN

Thermal Shutdown Temperature

Temperature rising

160

N

C

Thermal Shutdown Hysteresis

15

N

C