SYNC Voltage .............................................................6V
Operating Junction Temperature Range (Note 2)
LT8609E ................................................ –40 to 125°C
LT8609I ................................................. –40 to 125°C
LT8609H ................................................ –40 to 150°C
Storage Temperature Range ......................–65 to 150°C
MSE PACKAGE
10-LEAD PLASTIC MSOP
θ
JA
= 40°C/W
EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
orDer inForMaTion
LEAD FREE FINISH
LT8609EMSE#PBF
LT8609IMSE#PBF
LT8609HMSE#PBF
TAPE AND REEL
LT8609EMSE#TRPBF
LT8609IMSE#TRPBF
LT8609HMSE#TRPBF
PART MARKING*
LTGRW
LTGRW
LTGRW
PACKAGE DESCRIPTION
10-Lead Plastic MSOP
10-Lead Plastic MSOP
10-Lead Plastic MSOP
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°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 nonstandard 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/
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C.
PARAMETER
Minimum Input Voltage
l
elecTrical characTerisTics
CONDITIONS
MIN
TYP
2.7
1
1.7
46
480
MAX
3.0
3.2
4
12
90
700
0.786
0.794
0.04
±20
75
60
245
760
2.075
5.7
UNITS
V
µA
µA
µA
µA
V
V
%/V
nA
ns
ns
ns
kHz
kHz
MHz
mΩ
A
mΩ
8609f
V
IN
Quiescent Current
V
IN
Current in Regulation
Feedback Reference Voltage
Feedback Voltage Line Regulation
Feedback Pin Input Current
Minimum On-Time
Minimum Off Time
Oscillator Frequency
V
EN/UV
= 0V, V
SYNC
= 0V
V
EN/UV
= 2V, Not Switching, V
SYNC
= 0V
V
IN
= 6V, V
OUT
= 2.7V, Output Load = 100µA
V
IN
= 6V, V
OUT
= 2.7V, Output Load = 1mA
V
IN
= 6V, I
LOAD
= 100mA, 25°C
V
IN
= 6V, I
LOAD
= 100mA
V
IN
= 4.0V to 40V, I
LOAD
= 0.5A, –40°C to 150°C
V
FB
= 1V
I
LOAD
= 1.5A
I
LOAD
= 1.5A, SYNC = 1.9V
R
FSET
= 221k, I
LOAD
= 0.5A
R
FSET
= 60.4k, I
LOAD
= 0.5A
R
FSET
= 18.2k, I
LOAD
= 0.5A
I
LOAD
= 1A
l
l
l
l
l
l
l
l
0.778
0.770
0.782
0.782
0.02
45
45
115
l
l
l
155
640
1.925
3.4
200
700
2.00
185
4.5
115
Top Power NMOS On-Resistance
Top Power NMOS Current Limit
Bottom Power NMOS On-Resistance
l
2
For more information
www.linear.com/LT8609
LT8609
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C.
PARAMETER
SW Leakage Current
EN/UV Pin Threshold
EN/UV Pin Hysteresis
EN/UV Pin Current
PG Upper Threshold Offset from V
FB
PG Lower Threshold Offset from V
FB
PG Hysteresis
PG Leakage
PG Pull-Down Resistance
Sync Low Input Voltage
Sync High Input Voltage
TR/SS Source Current
TR/SS Pull-Down Resistance
Spread Spectrum Modulation Frequency
Fault Condition, TR/SS = 0.1V
V
SYNC
= 3.3V
1
INTV
CC
= 3.5V
V
PG
= 42V
V
PG
= 0.1V
l
l
l
l
elecTrical characTerisTics
CONDITIONS
MIN
l
l
TYP
1.05
50
MAX
15
1.11
±20
UNITS
µA
V
mV
nA
%
%
%
nA
Ω
V
V
µA
Ω
kHz
V
IN
42V, V
SW
= 40V
EN/UV Rising
V
EN/UV
= 2V
V
FB
Rising
V
FB
Falling
0.99
l
l
l
5.0
5.0
8.5
8.5
0.5%
13.0
13.0
±200
550
0.4
1
0.9
2.7
2
300
3
1200
3.2
3
900
6
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. Absolute Maximum Ratings are those values beyond
which the life of a device may be impaired.
Note 2:
The LT8609E 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
LT8609I is guaranteed over the full –40°C to 125°C operating junction
temperature range. The LT8609H is guaranteed over the full –40°C to
150°C operating junction temperature range. High junction temperatures
degrade operating lifetimes. Operating lifetime is derated at junction
temperatures greater than 125°C.
Note 3:
This IC includes overtemperature protection that is intended to
protect the device during overload conditions. Junction temperature will
exceed 150°C when overtemperature protection is active. Continuous
operation above the specified maximum operating junction temperature
据外媒报道，萨里大学（University of Surrey）的研究人员开发出一种无需依赖GPS即可在人口密集的城市地区精确定位设备位置的人工智能系统。该系统可将定位误差从734米缩小到22米以内，这对于自动驾驶汽车和救援车辆等技术的发展意义重大。 图片来源： 萨里大学 在发表于《IEEE Robotics and Automation Letters》的论文中，研究人员介绍了PEn...[详细]
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