LTC4441/LTC4441-1
4
44411fa
IN Pin Low Threshold Voltage
vs Temperature
IN Pin High Threshold Voltage
vs Temperature
EN Pin Input Threshold Voltage
vs Temperature
TEMPERATURE (°C)
–75 –50
IN PIN INPUT THRESHOLD (V)
25
4441 G01
–25 0 50
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
75 100 125
V
IN
= 7.5V
DRV
CC
= 5V
TEMPERATURE (°C)
–75 –50
IN PIN INPUT THRESHOLD (V)
25
4441 G02
–25 0 50
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2.0
75 100 125
V
IN
= 7.5V
DRV
CC
= 5V
TEMPERATURE (°C)
–75 –50
EN PIN INPUT THRESHOLD VOLTAGE (V)
25
4441 G03
–25 0 50
1.24
1.22
1.28
1.26
1.20
1.18
1.14
1.10
1.06
1.16
1.12
1.08
1.04
75 100 125
V
IN
= 7.5V
DRV
CC
= 5V
RISING EDGE
FALLING EDGE
FB Pin UVLO Threshold
vs Temperature
SD Pin Input Threshold Voltage
vs Temperature DRV
CC
Voltage vs Temperature
TEMPERATURE (°C)
–75 –50
FB PIN UVLO THRESHOLD VOLTAGE (V)
25
4441 G04
–25 0 50
1.00
0.96
0.88
0.92
1.16
1.12
1.08
0.84
1.04
75 100 125
V
IN
= 7.5V
RISING EDGE
FALLING EDGE
TEMPERATURE (°C)
–75 –50
SD PIN INPUT THRESHOLD VOLTAGE (V)
25
4441 G05
–25 0 50
0.50
0.45
0.35
0.40
0.75
0.70
0.65
0.60
0.30
0.55
75 100 125
RISING EDGE
FALLING EDGE
V
IN
= 7.5V
DRV
CC
= 5V
TEMPERATURE (°C)
–75 –50
CC
25
4441 G06
–25 0 50
5.20
5.15
5.05
5.10
5.45
5.40
5.35
5.30
5.00
5.25
75 100 125
R1 = 330k
R2 = 100k
V
IN
= 25V
V
IN
= 7.5V
elecTrical characTerisTics
Note 3: Failure to solder the Exposed Pad of the MSE package to the PC
board will result in a thermal resistance much higher than 38°C/W.
Note 4: Supply current in normal operation is dominated by the current
needed to charge and discharge the external power MOSFET gate. This
current will vary with supply voltage, switching frequency and the external
MOSFETs used.
Note 5: Rise and fall times are measured using 10% and 90% levels.
Delay times are measured from 50% of input to 20%/80% levels at driver
output.
Note 6: Blanking time is measured from 50% of OUT leading edge to 10%
of BLANK with a 1kΩ pull-up at BLANK pin. LTC4441 only.
Note 7: Guaranteed by design, not subject to test.
Note 8: This IC includes overtemperature protection that is intended to
protect the device during momentary overload conditions. The junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the maximum operating junction temperature
may impair device reliability.
Typical perForMance characTerisTics
