LTC4441 Ver la hoja de datos (PDF) - Linear Technology
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LTC4441 Datasheet PDF : 16 Pages
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LTC4441/LTC4441-1
Electrical Characteristics The l denotes the specifications which apply over the full operating
junction temperature range, otherwise specifications are at TA = 25°C (Note 2). VIN = 7.5V, DRVCC = 5V, unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VDRVCC
IVIN
Driver Supply Programmable Range
VIN Supply Current
DRVCC Regulator
VFB
Regulator Feedback Voltage
ΔVDRVCC(LINE) Regulator Line Regulation
ΔVDRVCC(LOAD) Load Regulation
VDROPOUT
Regulator Dropout Voltage
VUVLO
FB Pin UVLO Voltage
EN/SHDN = 0V, IN = 0V
EN/SHDN = 5V, IN = 0V
fIN = 100kHz, COUT = 4.7nF (Note 4)
VIN = 7.5V
VIN = 7.5V to 25V
Load = 0mA to 40mA
Load = 40mA
Rising Edge
Falling Edge
l
5
8
V
l
5
12
μA
l
250 500
μA
3
6
mA
l 1.11 1.21 1.31
V
9
40
mV
–0.1
%
370
mV
1.09
V
0.97
V
Input
VIH
VIL
VIH-VIL
IINP
IEN/SHDN
VSHDN
VEN
IN Pin High Input Threshold
IN Pin Low Input Threshold
IN Pin Input Voltage Hysteresis
IN Pin Input Current
EN/SHDN Pin Input Current
EN/SHDN Pin Shutdown Threshold
EN/SHDN Pin Enable Threshold
Rising Edge
Falling Edge
Rising-Falling Edge
VIN = ±10V
VEN/SHDN = 9V
Falling Edge
Rising Edge
Falling Edge
l
2
2.4
2.8
V
l
1
1.4
1.8
V
1
V
l
±0.01 ±10
μA
l
±0.01 ±1
μA
0.45
V
1.21
V
l 1.036 1.09 1.145
V
VEN(HYST)
Output
EN/SHDN Pin Enable Hysteresis
Rising-Falling Edge
0.12
V
RONL
Driver Output Pull-Down Resistance
IPU
Driver Output Peak Pull-Up Current
IPD
Driver Output Peak Pull-Down Current
RON(BLANK) BLANK Pin Pull-Down Resistance
VRBLANK
RBLANK Pin Voltage
Switching Timing
IOUT = 100mA
l
DRVCC = 8V
DRVCC = 8V
IN = 0V, IBLANK = 100mA LTC4441 Only
RBLANK = 200kΩ LTC4441 Only
0.35 0.8
Ω
6
A
6
A
11
Ω
1.3
V
tPHL
tPLH
tr
tf
tBLANK
Driver Output High-Low Propagation Delay
Driver Output Low-High Propagation Delay
Driver Output Rise Time
Driver Output Fall Time
Driver Output High to BLANK Pin High
COUT = 4.7nF (Note 5)
COUT = 4.7nF (Note 5)
COUT = 4.7nF (Note 5)
COUT = 4.7nF (Note 5)
RBLANK = 200kΩ (Note 6)
30
ns
36
ns
13
ns
8
ns
200
ns
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 TJ ≈ TA. 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
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 (TJ, in °C) is calculated from the ambient temperature
(TA, in °C) and power dissipation (PD, in Watts) according to the formula:
TJ = TA + (PD • θJA)
where θJA (in °C/W) is the package thermal impedance.
44411fa
3
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