Datasheet
LT3782
4
3782fg
The ● denotes the specifi cations which apply over the full operating junction
temperature range, otherwise specifi cations are at T
A
= 25°C. V
CC
= 13V, R
SET
= 80k, no load on any outputs, unless otherwise noted.
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 LT3782E is guaranteed to meet performance specifi cations
from 0°C to 85°C. 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 LT3782I is guaranteed to
meet performance specifi cations over the full –40°C to 125°C operating
junction temperature range.
Note 3: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the specifi ed maximum operating junction
temperature may impair device reliability.
ELECTRICAL CHARACTERISTICS
PARAMETER CONDITIONS MIN TYP MAX UNITS
Gate Driver
V
GBIAS
I
GBIAS
< 70mA
l
10.2 11 11.7 V
BGATE1, BGATE2 High Voltage 13V ≤ V
CC
≤ 24V, I
BGATE
= –100mA
V
CC
= 8V, I
BGATE
= –100mA
l
l
7.8
3.8
9.2
5
10.5 V
V
BGATE1, BGATE2 Source Current (Peak) Capacitive Load >22μF
Capacitive Load >50μF
3
4
A
A
BGATE1, BGATE2 Low Voltage 8V ≤ V
CC
≤ 24V, I
BGATE
= 100mA
l
0.5 0.7 V
BGATE1, BGATE2 Sink Current (Peak) Capacitive Load >22μF
Capacitive Load >50μF
3
4
A
A
SGATE1, SGATE2 High Voltage 8V ≤ V
CC
≤ 24V, I
SGATE
= –20mA
l
4.5 5.5 6.7 V
SGATE1, SGATE2 Low Voltage 8V ≤ V
CC
≤ 24V, I
SGATE
= 20mA 0.5 0.7 V
SGATE1, SGATE2 Peak Current 500pF Load 100 mA
Delay of BGATE High DELAY Pin and R
SET
Pin Shorted
V
DELAY
= 1V
V
DELAY
= 0.5V
V
DELAY
= 0.25V
100
150
250
500
ns
ns
ns
ns
Delay Pin Input Current V
DELAY
= 0.25V
l
–0.1 –0.3 μA