LT8302E, LT8302I.............................. –40°C to 125°C
LT8302H ............................................ –40°C to 150°C
LT8302MP ......................................... –55°C to 150°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................... 300°C
S8E PACKAGE
8-LEAD PLASTIC SO
θ
JA
= 33°C/W
EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB
orDer inForMaTion
LEAD FREE FINISH
LT8302ES8E#PBF
LT8302IS8E#PBF
LT8302HS8E#PBF
LT8302MPS8E#PBF
TAPE AND REEL
LT8302ES8E#TRPBF
LT8302IS8E#TRPBF
LT8302HS8E#TRPBF
LT8302MPS8E#TRPBF
http://www.linear.com/product/LT8302#orderinfo
PART MARKING*
8302
8302
8302
8302
PACKAGE DESCRIPTION
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
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.
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/.
Some packages are available in 500 unit reels through
designated sales channels with #TRMPBF suffix.
8302fc
2
For more information
www.linear.com/LT8302
LT8302
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
, C
INTVCC
= 1µF to GND, unless otherwise noted.
SYMBOL
V
IN
I
Q
PARAMETER
V
IN
Voltage Range
V
IN
Quiescent Current
V
EN/UVLO
= 0.2V
V
EN/UVLO
= 1.1V
Sleep Mode (Switch Off)
Active Mode (Switch On)
For Lowest Off I
Q
Falling
V
EN/UVLO
= 0.3V
V
EN/UVLO
= 1.1V
V
EN/UVLO
= 1.3V
I
INTVCC
= 0mA to 10mA
V
INTVCC
= 2.8V
Falling
I
RFB
= 75µA to 125µA
l
l
l
elecTrical characTerisTics
CONDITIONS
l
MIN
2.8
TYP
0.5
53
106
380
MAX
42
2
UNIT
V
µA
µA
µA
µA
V
V
mV
µA
µA
µA
V
mA
V
mV
mV
V
%/V
V
µA
µA
kHz
ns
µs
EN/UVLO Shutdown Threshold
EN/UVLO Enable Threshold
EN/UVLO Enable Hysteresis
I
HYS
V
INTVCC
I
INTVCC
EN/UVLO Hysteresis Current
0.2
1.178
–0.1
2.3
–0.1
2.85
10
2.39
–50
0.98
–0.01
12
11.3
0.75
1.214
14
0
2.5
0
3
13
2.47
105
50
1.00
0
1.00
15
–200
12
160
170
1.02
0.01
18
12.7
0.1
2.7
0.1
3.1
20
2.55
1.250
INTV
CC
Regulation Voltage
INTV
CC
Current Limit
INTV
CC
UVLO Threshold
INTV
CC
UVLO Hysteresis
(R
FB
– V
IN
) Voltage
R
REF
Regulation Voltage
R
REF
Regulation Voltage Line Regulation
2.8V ≤ V
IN
≤ 42V
V
TC
= 1.2V
V
TC
= 0.8V
V
TC
I
TC
f
MIN
t
ON(MIN)
t
OFF(MAX)
I
SW(MAX)
I
SW(MIN)
R
DS(ON)
I
LKG
t
SS
TC Pin Voltage
TC Pin Current
Minimum Switching Frequency
Minimum Switch-On Time
Maximum Switch-Off Time
Maximum Switch Current Limit
Minimum Switch Current Limit
Switch On-Resistance
Switch Leakage Current
Soft-Start Timer
I
SW
= 1.5A
V
SW
= 65V
Backup Timer
3.6
0.70
4.5
0.87
80
0.1
11
5.4
1.04
0.5
A
A
mΩ
µA
ms
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 LT8302E is guaranteed to meet performance specifications
from 0°C to 125°C 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
LT8302I is guaranteed over the full –40°C to 125°C operating junction
temperature range. The LT8302H is guaranteed over the full –40°C to
150°C operating junction temperature range. The LT8302MP 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 LT8302 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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