EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB
DD PACKAGE
8-LEAD (3mm
×
3mm) PLASTIC DFN
θ
JA
= 43°C/W
EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
LT8570EDD#PBF
LT8570IDD#PBF
LT8570HDD#PBF
LT8570EMS8E#PBF
LT8570IMS8E#PBF
LT8570HMS8E#PBF
LT8570EDD-1#PBF
LT8570IDD-1#PBF
LT8570HDD-1#PBF
LT8570EMS8E-1#PBF
LT8570IMS8E-1#PBF
LT8570HMS8E-1#PBF
TAPE AND REEL
LT8570EDD#TRPBF
LT8570IDD#TRPBF
LT8570HDD#TRPBF
LT8570EMS8E#TRPBF
LT8570IMS8E#TRPBF
LT8570HMS8E#TRPBF
LT8570EDD-1#TRPBF
LT8570IDD-1#TRPBF
LT8570HDD-1#TRPBF
http://www.linear.com/product/LT8570#orderinfo
PART MARKING*
LGRY
LGRY
LGRY
LTGRZ
LTGRZ
LTGRZ
LGSB
LGSB
LGSB
LTGSC
LTGSC
LTGSC
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
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
– 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
LT8570EMS8E-1#TRPBF
LT8570IMS8E-1#TRPBF
LT8570HMS8E-1#TRPBF
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.
2
85701fa
For more information
www.linear.com/LT8570
LT8570/LT8570-1
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
V
SHDN
= 2.5V, Not Switching
V
SHDN
= 0V
2.55V ≤ V
IN
≤ 40V
R
T
= 56.2k
R
T
= 422k
Compared to Normal f
OSC
SYNCing or Free Running
CONDITIONS
– 40°C to 125°C
– 40°C to 150°C
l
l
l
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
SHDN
= V
IN
unless otherwise noted. (Note 2)
MIN
2.55
2.9
1.185
–3
81
81
1.204
3
83.3
83.3
200
60
1.2
0
0.01
1.5
200
1/6
1.7
1
0.05
1.77
235
1500
0.4
65
3/4
100
100
0.75
0.5
0.4
0.375
0.25
0.2
250
250
0.01
6
1.31
1.27
40
44
12
0
ns
ns
A
A
A
A
A
A
mV
mV
µA
µA
V
V
mV
V
µA
µA
µA
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
%
V
FBX
= Positive Feedback Voltage, Current Into Pin
V
FBX
= Negative Feedback Voltage, Current Out of Pin
l
l
l
l
1.23
165
200
1.3
35
l
l
l
V
SYNC
= 0V to 2V
Switch V
CESAT
Switch Leakage Current
Soft-Start Charging Current
SHDN
Minimum Input
Voltage High
SHDN
Minimum Input Voltage Hysteresis
SHDN
Input Voltage Low
SHDN
Pin Bias Current
Minimum Duty Cycle (Note 3), LT8570
Maximum Duty Cycle (Notes 3, 4), LT8570, f
OSC
= 1.5MHz
Maximum Duty Cycle (Notes 3, 4), LT8570, f
OSC
= 200kHz
Minimum Duty Cycle (Note 3), LT8570-1
Maximum Duty Cycle (Notes 3, 4), LT8570-1, f
OSC
= 1.5MHz
Maximum Duty Cycle (Notes 3, 4), LT8570-1, f
OSC
= 200kHz
I
SW
= 0.4A (LT8570)
I
SW
= 0.2A (LT8570-1)
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
l
l
l
0.6
0.27
0.15
0.3
0.15
0.075
1
0.85
0.8
0.5
0.43
0.4
l
l
l
4
1.23
1.21
1
8
1.4
1.33
0.3
56
15
0.1
l
9
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 LT8570E/LT8570-1E are 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
LT8570I/LT8570-1I are guaranteed over the full –40°C to 125°C operating
junction temperature range. The LT8570H/LT8570-1H are guaranteed over
the full –40°C to 150°C operating junction temperature range. Operating
lifetime is derated at junction temperatures greater than 125°C.
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
Circuit Function and AdvantagesThis circuit uses the AD5764 quad, 16-bit, serial input, bipolar voltage output DAC to provide high accuracy, bipolar data conversion. It utilizes the ADR02 precision vo...
[size=4][color=blue][b]Today is the birthday of netizen superccj, let's all wish him a happy birthday! Dreams will come true! [/b][/color][/size] [b][size=4][color=#0000ff][/color][/size][/b]...
Abdominal breathing training trainerAuthor:7905Project Background ( 100-200words ) Whether it is ancient Indian yoga or Buddhist meditation, or Chinese Taoist Dandao fetal breathing and ordinary Qigon...
[i=s]This post was last edited by Tristan.Wu on 2015-8-14 17:46[/i] The speed requirement of the brushless gimbal motor itself is not fast, so a low-speed open-loop control is enough to make it run! T...
I saw some experience about AVR low power design on ouravr, and I reposted it here: 1. When using sleep mode, try to avoid using loop delays and event waiting, and use interrupt-driven events. 2. Use ...
According to foreign media reports, Ford Motor has applied to the U.S. Patent and Social Security Administration (USPTO) for a patent for a remote vehicle control system that may be used in future ...[Details]
Dual-mode inverters can operate both in conjunction with the grid and independently. These inverters can inject excess energy from renewable energy and storage devices into the grid, and withdraw p...[Details]
In recent years, with the increasing demand for manufacturing and automated production management, industrial barcode scanners have gradually become an indispensable part of the industrial manufact...[Details]
Tesla and BYD, vying for dominance in the global electric vehicle market, are reportedly considering adopting Samsung's AMOLED (active-matrix organic light-emitting diode) technology for their next...[Details]
introduction
With the development of digital and network technologies, broadcasting technology has become increasingly diversified, with the most significant trend being the transition from an...[Details]
As the main model among new energy vehicles, pure electric vehicles have received strong support and encouragement from the country in recent years, and their development is changing with each pass...[Details]
summary
There are multiple approaches to making industrial systems more intelligent, including applying artificial intelligence (AI) technology at the edge and in the cloud to sensor...[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]
Core point: The automotive industry chain and the humanoid robot industry have collaborative advantages in hardware, software, and scenarios. Upstream and downstream companies in the automotive ind...[Details]
Recently, South Korean robotics giant WIRobotics launched its first general-purpose humanoid robot, ALLEX, at the Robotics Innovation Center (RIH) at the Korea University of Science and Technology....[Details]
When discussing autonomous driving technology, there are often two extremes: on the one hand, there's the vision of "fully autonomous driving," while on the other, there's concern about potential s...[Details]
Pure electric vehicles, structurally speaking, have components such as a power battery. In addition to the power battery, a small battery also powers some low-voltage electrical components and even...[Details]
With the advent of the electric car era, the number of pure electric vehicles has increased significantly, but many car owners do not know how to properly maintain pure electric vehicles. In additi...[Details]
Electric vehicles' 12V batteries don't rely on a generator to power them. Only gasoline-powered vehicles rely on the engine to drive a generator to generate electricity while driving, which is used...[Details]
In the electronics manufacturing industry, surface mount technology (SMT) placement machines are core equipment for production lines. However, with many different models available on the market, ch...[Details]
ADI Reference Circuit
京公网安备 11010802033920号
EEWORLD
