VC Voltage ................................................... –0.3V to 2V
SHDN
Voltage ............................................ –0.3V to 40V
SYNC Voltage............................................ –0.3V to 5.5V
Operating Junction Temperature Range
LT8580E (Notes 2, 5) ......................... –40°C to 125°C
LT8580I (Notes 2, 5).......................... –40°C to 125°C
LT8580H (Notes 2, 5) ........................ –40°C to 150°C
Storage Temperature Range ..................–65°C to 150°C
PIN CONFIGURATION
TOP VIEW
FBX 1
VC 2
V
IN
3
SW 4
9
GND
8 SYNC
7 SS
6 RT
5
SHDN
TOP VIEW
FBX
VC
V
IN
SW
1
2
3
4
9
GND
8
7
6
5
SYNC
SS
RT
SHDN
MS8E PACKAGE
8-LEAD PLASTIC MSOP
DD PACKAGE
8-LEAD (3mm
×
3mm) PLASTIC DFN
θ
JA
= 43°C/W
EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB
θ
JA
= 35°C/W TO 40°C/W
EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
LT8580EDD#PBF
LT8580IDD#PBF
LT8580HDD#PBF
LT8580EMS8E#PBF
LT8580IMS8E#PBF
LT8580HMS8E#PBF
AUTOMOTIVE PRODUCTS**
LT8580EMS8E#WPBF
LT8580IMS8E#WPBF
LT8580EMS8E#WTRPBF
LT8580IMS8E#WTRPBF
LTGKJ
LTGKJ
8-Lead Plastic MSOP
8-Lead Plastic MSOP
– 40°C to 125°C
– 40°C to 125°C
TAPE AND REEL
LT8580EDD#TRPBF
LT8580IDD#TRPBF
LT8580HDD#TRPBF
LT8580EMS8E#TRPBF
LT8580IMS8E#TRPBF
LT8580HMS8E#TRPBF
PART MARKING*
LGKH
LGKH
LGKH
LTGKJ
LTGKJ
LTGKJ
PACKAGE DESCRIPTION
8-Lead (3mm
×
3mm) Plastic DFN
8-Lead (3mm
×
3mm) Plastic DFN
8-Lead (3mm
×
3mm) Plastic DFN
8-Lead Plastic MSOP
8-Lead Plastic MSOP
8-Lead Plastic MSOP
TEMPERATURE RANGE
– 40°C to 125°C
– 40°C to 125°C
– 40°C to 150°C
– 40°C to 125°C
– 40°C to 125°C
– 40°C to 150°C
Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Tape and reel specifications.
Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.
**Versions
of this part are available with controlled manufacturing to support the quality and reliability requirements of automotive applications. These
models are designated with a #W suffix. Only the automotive grade products shown are available for use in automotive applications. Contact your
local Analog Devices account representative for specific product ordering information and to obtain the specific Automotive Reliability reports for
these models.
Rev. C
2
For more information
www.analog.com
LT8580
ELECTRICAL CHARACTERISTICS
PARAMETER
Operating Voltage Range
Positive Feedback Voltage
Negative Feedback Voltage
Positive FBX Pin Bias Current
Negative FBX Pin Bias Current
Error Amplifier Transconductance
Error Amplifier Voltage Gain
Quiescent Current
Quiescent Current in Shutdown
Reference Line Regulation
Switching Frequency, f
OSC
Switching Frequency in Foldback
Switching Frequency Set Range
SYNC High Level for Synchronization
SYNC Low Level for Synchronization
SYNC Clock Pulse Duty Cycle
Recommended Minimum SYNC Ratio f
SYNC
/f
OSC
Minimum Off-Time
Minimum On-Time
Switch Current Limit
Switch V
CESAT
Switch Leakage Current
Soft-Start Charging Current
SHDN
Minimum Input
Voltage High
SHDN
Input Voltage Low
SHDN
Pin Bias Current
SHDN
Hysteresis
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 LT8580E 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
LT8580I is guaranteed over the full –40°C to 125°C operating junction
temperature range. The LT8580H is guaranteed over the full –40°C to
150°C operating junction temperature range. Operating lifetime is derated
at junction temperatures greater than 125°C.
V
SHDN
= 2.5V, Not Switching
V
SHDN
= 0V
2.5V ≤ V
IN
≤ 40V
R
T
= 56.2k
R
T
= 422k
Compared to Normal f
OSC
SYNCing or Free Running
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
SHDN
= V
IN
unless otherwise noted. (Note 2)
CONDITIONS
LT8580E, LT8580I
LT8580H
l
l
l
l
MIN
2.55
2.9
1.185
–3
81
81
TYP
MAX
40
40
1.220
12
85
86
UNITS
V
V
V
mV
µA
µA
µmhos
V/V
mA
µA
%/V
MHz
kHz
Ratio
kHz
V
V
%
ns
ns
A
A
A
mV
µA
µA
V
V
V
µA
µA
µA
mV
V
FBX
= Positive Feedback Voltage, Current Into Pin
V
FBX
= Negative Feedback Voltage, Current Out of Pin
l
l
1.204
3
83.3
83.3
200
60
1.2
0
0.01
1.5
200
1/6
l
l
1.23
165
200
1.3
35
1.7
1
0.05
1.77
235
1500
0.4
65
l
l
l
V
SYNC
= 0V to 2V
Minimum Duty Cycle (Note 3)
Maximum Duty Cycle (Notes 3, 4), f
OSC
= 1.5MHz
Maximum Duty Cycle (Notes 3, 4), f
OSC
= 200kHz
I
SW
= 0.75A
V
SW
= 5V
V
SS
= 0.5V
Active Mode,
SHDN
Rising
Active Mode,
SHDN
Falling
Shutdown Mode
V
SHDN
= 3V
V
SHDN
= 1.3V
V
SHDN
= 0V
l
l
l
1.2
0.6
0.4
l
l
l
l
4
1.23
1.21
3/4
100
120
1.5
1
0.8
400
0.01
6
1.31
1.27
44
12
0
40
1.8
1.5
1.4
1
8
1.4
1.33
0.3
56
15
0.1
9
Note 3:
Current limit guaranteed by design and/or correlation to static test.
Note 4:
Current limit measured at equivalent of listed switching frequency.
Note 5:
This IC 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
[font=微软雅黑, "][size=14px][color=#000000][size=3]1.3 The Kalman Filter Algorithm[/size] [size=2]In this section, we will describe the Kalman filter derived from Dr Kalman. The following description wil...
Automotive electronics is one of the hot spots in the current development of the automotive industry, and has many special application requirements. As an emerging computing technology, reconfigurable...
As more and more consumers purchase new energy vehicles, the safety of electric vehicles has become a major concern. This has been particularly prominent following a series of electric vehicle fire...[Details]
On August 25th, TSMC, the world's leading contract chip manufacturer, attracted significant attention for its decision to build a chip manufacturing facility in Arizona. TSMC primarily manufactures...[Details]
According to foreign media reports, researchers at the University of Surrey have developed an artificial intelligence system that can accurately locate the location of equipment in densely populate...[Details]
On August 21st, Zhiyuan Robotics revealed at its first partner conference that it expects shipments to reach thousands of units this year and tens of thousands next year. The company hopes to reach...[Details]
introduction
According to the China Fire Statistics Yearbook, electrical fires accounted for more than 30% of fire accidents in the past decade, and the trend is increasing year by year. They ...[Details]
HTTP is the abbreviation of Hypertext Transfer Protocol. It is an application protocol based on TCP/IP communication protocol used to transmit HTML and image files. It is an application-level objec...[Details]
Previously, Positive Motion Technology shared with you the firmware upgrade of motion controller, ZBasic program development, ZPLC program development, communication with touch screen and input/out...[Details]
Shanghai, China, August 21, 2025 –
Toshiba Electronic Devices & Storage Corporation (“Toshiba”) today announced the launch of the TLX9161T
, an automotive photorelay in a compact SO12L-T pa...[Details]
introduction
In recent years, multi-touch has emerged as a new alternative to traditional human-computer interaction. It eliminates the need for keyboards and mice, enabling simultaneous inter...[Details]
Smartphones can be incredibly unintelligent. For example, consider an office full of people, each absorbed in their work. Suddenly, the silence is broken by a burst of loud pop music. A colleague's...[Details]
On August 20, Reuters reported that two sources revealed that U.S. Commerce Secretary Howard Lutnick is exploring the possibility of using CHIPS Act funds in exchange for equity stakes in chip manu...[Details]
According to foreign media reports, Apple is secretly evaluating several artificial intelligence hardware concepts, including smart home displays, security devices and a desktop robot, of which the...[Details]
According to the latest financial report data, thanks to its leading position in advanced technology, TSMC's profit performance in the second quarter of 2025 was extremely impressive, with net prof...[Details]
Currently, PLCs are widely used in various industries, including special machine tools, machine tools, control systems, building automation, steel, petrochemicals, electricity, building materials, ...[Details]
Integrated technical exchanges
京公网安备 11010802033920号
EEWORLD
