Datasheet

LT3593
3
3593f
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.
ELECTRICAL CHARACTERISTICS
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
IN
= 3.6V, V
CTRL
= 3.6V, unless otherwise specifi ed.
PARAMETER CONDITIONS MIN TYP MAX UNITS
Switch Leakage Current V
SW
= 30V 1 µA
LED Pin Voltage Drop (V
CAP
– V
LED
)I
LED
= 20mA 250 mV
LED Pin Leakage Current CTRL = 0, V
CAP
= 35V 1 µA
CTRL High Threshold 1.6 V
CTRL Low Threshold 0.4 V
CTRL t
PW
Programming Pulse Width (Note 3) 250 ns
CTRL t
SD
Time from CTRL = 0 to Shutdown 95 128 200 µs
CTRL t
EN
Time from CTRL = 1 to Enable 95 128 200 µs
Full-Scale LED Current V
CAP
= 16V
V
CAP
= 16V
l
19
18.5
20
20
21
21.5
mA
mA
LED Current Programming Resolution Linear Increments 625 µA
LED Current Limit 45 mA
CTRL Pin Bias Current V
CTRL
= 5.5V 1 µA
Overvoltage Protection
l
36 38 40 V
Note 2: The LTC3593E is guaranteed to meet performance specifi cations
from 0°C to 85°C operating junction temperature range. Specifi cations
over the –40°C to 85°C operating junction temperature range are assured
by design, characterization and correlation with statistical process
controls.
Note 3: Guaranteed by design.