LT3519

3

3519f

ELECTRICAL CHARACTERISTICS

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2. The LT3519E is guaranteed to meet specified performance

from 0°C to 125°C. Specifications over the –40°C to 125°C operating

temperature range are assured by design, characterization and

correlation with statistical process controls. The LT3519I is guaranteed

The

unless otherwise noted.

to meet performance specifications over the –40°C to 125°C operating

temperature range.

nonrepetitive one second transients and 30V for continuous operation.

proper operation.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Switch Leakage Current

SW = 45V, PWM = 0V

2

μA

CTRL for Full-Scale LED Current

1.2

V

CTRL Pin Bias Current

Current Out of Pin, CTRL = 0.1V

50

100

nA

PWM Input High Voltage

1.5

V

PWM Input Low Voltage

0.4

V

PWM Pin Resistance to GND

70

kΩ

l

1.190

1.220

1.250

V

FB Pin Threshold Voltage for OPENLED Falling

V

FB Pin Bias Current

Current Out of Pin, FB = 1V

60

120

nA

ISP, ISN Idle Input Bias Current

PWM = 0V

1

μA

ISP, ISN Full-Scale Input Bias Current

ISP = ISN = 24V

17

μA

Schottky Forward Drop

0.8

V

Schottky Leakage Current

CATHODE = 24V, ANODE = 0V

4

μA

SHDN/UVLO Threshold Voltage Falling

l

1.180

1.220

1.270

V

SHDN/UVLO Input Low Voltage

0.4

V

SHDN/UVLO Pin Bias Current Low

SHDN/UVLO = 1.15V

1.8

2.2

2.6

μA

SHDN/UVLO Pin Bias Current High

SHDN/UVLO = 1.30V

10

100

nA

l

1.96

2

2.04

V

0.04

%/V

240

mV

OPENLED Leakage Current

FB = 0V, OPENLED = 40V

1

μA