LT8301E, LT8301I .............................. –40°C to 125°C
LT8301H ............................................ –40°C to 150°C
LT8301MP ......................................... –55°C to 150°C
Storage Temperature Range .................. –65°C to 150°C
S5 PACKAGE
5-LEAD PLASTIC TSOT-23
θ
JA
= 150°C/W
ORDER INFORMATION
LEAD FREE FINISH
LT8301ES5#PBF
LT8301IS5#PBF
LT8301HS5#PBF
LT8301MPS5#PBF
TAPE AND REEL
LT8301ES5#TRPBF
LT8301IS5#TRPBF
LT8301HS5#TRPBF
LT8301MPS5#TRPBF
PART MARKING*
LTGMF
LTGMF
LTGMF
LTGMF
PACKAGE DESCRIPTION
5-Lead Plastic TSOT-23
5-Lead Plastic TSOT-23
5-Lead Plastic TSOT-23
5-Lead Plastic TSOT-23
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 150°C
–55°C to 150°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/
8301f
2
For more information
www.linear.com/LT8301
LT8301
ELECTRICAL CHARACTERISTICS
SYMBOL
V
IN
PARAMETER
Input Voltage Range
V
IN
UVLO Threshold
I
Q
V
IN
Quiescent Current
Rising
Falling
V
EN/UVLO
= 0.2V
V
EN/UVLO
= 1.1V
Sleep Mode (Switch Off)
Active Mode (Switch On)
For Lowest Off I
Q
Falling
Hysteresis
V
EN/UVLO
= 0.2V
V
EN/UVLO
= 1.1V
V
EN/UVLO
= 1.3V
l
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 5V, V
EN/UVLO
= V
IN
unless otherwise noted.
CONDITIONS
l
MIN
2.7
TYP
2.5
2.3
0.8
215
100
350
MAX
42
2.65
2
UNIT
V
V
V
µA
µA
µA
µA
V
V
V
µA
µA
µA
kHz
ns
µs
EN/UVLO Shutdown Threshold
EN/UVLO Enable Threshold
I
HYS
f
MIN
t
ON(MIN)
t
OFF(MAX)
I
SW(MAX)
I
SW(MIN)
R
DS(ON)
I
LKG
I
RFB
EN/UVLO Hysteresis Current
0.2
1.204
–0.1
2.2
–0.1
9.4
0.55
1.228
0.014
0
2.5
0
10
170
190
1.248
0.1
2.8
0.1
10.6
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
R
FB
Regulation Current
R
FB
Regulation Current Line Regulation
2.7V ≤ V
IN
≤ 42V
I
SW
= 500mA
V
IN
= 42V, V
SW
= 65V
l
Backup Timer
l
l
1.200
0.22
1.375
0.29
0.4
0.1
1.550
0.36
0.5
102.5
0.1
A
A
Ω
µA
µA
%/V
97.5
100
0.02
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 LT8301H is 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
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