LTC4441/LTC4441-1
3
44411fa
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 LTC4441/LTC4441-1 are tested under pulsed load conditions
such that T
J
≈ T
A
. The LTC4441E/LTC4441E-1 are guaranteed to meet
performance specifications from 0°C to 85°C operating junction
temperature. Specifications over the –40°C to 125°C operating junction
temperature range are assured by design characterization and correlation
with statistical process controls. The LTC4441I/LTC4441I-1 grade are
The l denotes the specifications which apply over the full operating
junction temperature range, otherwise specifications are at T
A
= 25°C (Note 2). V
IN
= 7.5V, DRV
CC
= 5V, unless otherwise specified.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
DRVCC
Driver Supply Programmable Range
l
5 8 V
I
VIN
V
IN
Supply Current EN/SHDN = 0V, IN = 0V
EN/SHDN = 5V, IN = 0V
f
IN
= 100kHz, C
OUT
= 4.7nF (Note 4)
l
l
5
250
3
12
500
6
μA
μA
mA
DRV
CC
Regulator
V
FB
Regulator Feedback Voltage V
IN
= 7.5V
l
1.11 1.21 1.31 V
ΔV
DRVCC(LINE)
Regulator Line Regulation V
IN
= 7.5V to 25V 9 40 mV
ΔV
DRVCC(LOAD)
Load Regulation Load = 0mA to 40mA –0.1 %
V
DROPOUT
Regulator Dropout Voltage Load = 40mA 370 mV
V
UVLO
FB Pin UVLO Voltage Rising Edge
Falling Edge
1.09
0.97
V
V
Input
V
IH
IN Pin High Input Threshold Rising Edge
l
2 2.4 2.8 V
V
IL
IN Pin Low Input Threshold Falling Edge
l
1 1.4 1.8 V
V
IH
-V
IL
IN Pin Input Voltage Hysteresis Rising-Falling Edge 1 V
I
INP
IN Pin Input Current V
IN
= ±10V
l
±0.01 ±10 μA
I
EN/SHDN
EN/SHDN Pin Input Current V
EN/SHDN
= 9V
l
±0.01 ±1 μA
V
SHDN
EN/SHDN Pin Shutdown Threshold Falling Edge 0.45 V
V
EN
EN/SHDN Pin Enable Threshold Rising Edge
Falling Edge
l
1.036
1.21
1.09
1.145
V
V
V
EN(HYST)
EN/SHDN Pin Enable Hysteresis Rising-Falling Edge 0.12 V
Output
R
ONL
Driver Output Pull-Down Resistance I
OUT
= 100mA
l
0.35 0.8 Ω
I
PU
Driver Output Peak Pull-Up Current DRV
CC
= 8V 6 A
I
PD
Driver Output Peak Pull-Down Current DRV
CC
= 8V 6 A
R
ON(BLANK)
BLANK Pin Pull-Down Resistance IN = 0V, I
BLANK
= 100mA LTC4441 Only 11 Ω
V
RBLANK
RBLANK Pin Voltage RBLANK = 200kΩ LTC4441 Only 1.3 V
Switching Timing
t
PHL
Driver Output High-Low Propagation Delay C
OUT
= 4.7nF (Note 5) 30 ns
t
PLH
Driver Output Low-High Propagation Delay C
OUT
= 4.7nF (Note 5) 36 ns
t
r
Driver Output Rise Time C
OUT
= 4.7nF (Note 5) 13 ns
t
f
Driver Output Fall Time C
OUT
= 4.7nF (Note 5) 8 ns
t
BLANK
Driver Output High to BLANK Pin High RBLANK = 200kΩ (Note 6) 200 ns
guaranteed over the –40°C to 125°C operating junction temperature
range. The LTC4441MP is guaranteed and tested over the full –55°C to
125°C operating junction temperature range. Note that the maximum
ambient temperature consistent with these specifications is determined by
specific operating conditions in conjunction with board layout, the rated
package thermal impedance and other environmental factors. The junction
temperature (T
J
, in °C) is calculated from the ambient temperature
(T
A
, in °C) and power dissipation (P
D
, in Watts) according to the formula:
T
J
= T
A
+ (P
D
• θ
JA
)
where θ
JA
(in °C/W) is the package thermal impedance.
