LT8301MP Просмотр технического описания (PDF) - Analog Devices
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LT8301MP Datasheet PDF : 24 Pages
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LT8301
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 5V, VEN/UVLO = VIN unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX
UNIT
VIN
Input Voltage Range
VIN UVLO Threshold
Rising
Falling
l 2.7
42
V
2.5
2.65
V
2.3
V
IQ
VIN Quiescent Current
VEN/UVLO = 0.2V
VEN/UVLO = 1.1V
Sleep Mode (Switch Off)
Active Mode (Switch On)
0.8
2
µA
215
µA
100
µA
350
µA
EN/UVLO Shutdown Threshold
EN/UVLO Enable Threshold
For Lowest Off IQ
Falling
Hysteresis
l 0.2
0.55
V
1.204 1.228 1.248
V
0.014
V
IHYS
fMIN
tON(MIN)
tOFF(MAX)
ISW(MAX)
ISW(MIN)
RDS(ON)
ILKG
IRFB
EN/UVLO Hysteresis Current
Minimum Switching Frequency
Minimum Switch-On Time
Maximum Switch-Off Time
Maximum SW Current Limit
Minimum SW Current Limit
Switch On-Resistance
Switch Leakage Current
RFB Regulation Current
RFB Regulation Current Line Regulation
VEN/UVLO = 0.2V
VEN/UVLO = 1.1V
VEN/UVLO = 1.3V
Backup Timer
ISW = 500mA
VIN = 42V, VSW = 65V
2.7V ≤ VIN ≤ 42V
–0.1
0
0.1
µA
2.2
2.5
2.8
µA
–0.1
0
0.1
µA
9.4
10
10.6
kHz
170
ns
190
µs
l 1.200 1.375 1.550
A
l 0.22 0.29 0.36
A
0.4
Ω
0.1
0.5
µA
l 97.5 100 102.5
µA
0.02
0.1
%/V
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 SW pin is rated to 65V for transients. Depending on the
leakage inductance voltage spike, operating waveforms of the SW pin
should be derated to keep the flyback voltage spike below 65V as shown
in Figure 5.
Note 3: The LT8301E is guaranteed to meet performance specifications
from 0°C to 125°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 LT8301I is guaranteed over the full –40°C to 125°C operating junction
temperature range. The LT8301J and LT8301H are guaranteed over the
full –40°C to 150°C operating junction temperature range. The LT8301MP
is guaranteed over the full –55°C to 150°C operating junction temperature
range. High junction temperatures degrade operating lifetimes. Operating
lifetime is derated at junction temperature greater than 125°C.
Note 4: The LT8301 includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 150°C when overtemperature protection is active.
Continuous operation above the specified maximum operating junction
temperature may impair device reliability.
Rev. B
For more information www.analog.com
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