LT3598
4
3598fb
PARAMETER CONDITIONS MIN TYP MAX UNITS
SHDN Pin Current V
SHDN
= 0V
V
SHDN
= 5V
0.1
30
1
60
μA
μA
SHDN Voltage High 1.6 V
SHDN Voltage Low 0.4 V
Soft-Start Charging Current V
SS
= 0.1V 5 10 15 μA
PWM Input High Voltage 1V
PWM Input Low Voltage 0.4 V
PWM Pin Bias Current PWM = 3.3V 0.1 1 μA
SYNC Input High Voltage 1.5 V
SYNC Input Low Voltage 0.4 V
SYNC Pin Bias Current SYNC = 0V
SYNC = 3.3V
25
0.1
50
1
μA
μA
V
O_SW
Switch Resistance 1000 Ω
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
= 5V, V
SHDN
= V
IN
unless otherwise noted. (Note 2)
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 LT3598E is guaranteed to meet performance specifi cations
from 0°C to 125°C junction temperature. Specifi cations over the –40°C
to 125°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls. The
LT3598I is guaranteed over the full –40°C to 125°C operating junction
temperature range.
Note 3: Current fl ows out of FB pin.
Note 4: Current fl ows out of CTRL pin.
Note 5: Current limit guaranteed by design and/or correlation to static test.
Current limit is independent of duty cycle and is guaranteed by design.
