nous buck regulator using a constant frequency, current
mode architecture. Supply current during operation is
only 20μA, dropping to
≤1μA
in shutdown. The 2.5V to
5.5V input voltage range makes the LTC3564 ideally suited
for single Li-Ion battery-powered or 3.3V to 5V input
voltage applications. 100% duty cycle provides low drop-
out operation, extending battery life in portable systems.
Automatic Burst Mode
®
operation increases efficiency at
light loads, further extending battery runtime.
Switching frequency is internally set at 2.25MHz, allowing
the use of small surface mount inductors and capacitors.
The internal synchronous switch increases efficiency and
eliminates the need for an external Schottky diode. Low
output voltages are easily supported with the 0.6V feed-
back reference voltage. The LTC3564 is available in low
profile (1mm) ThinSOT and 6-Lead (2mm
×
3mm) DFN
packages.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
Burst Mode is a registered trademark of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Protected by U.S. Patents including 5481178, 6580258, 6304066, 6498466, 6611131.
APPLICATIO S
■
■
■
■
■
■
Cellular Telephones
Wireless and DSL Modems
Digital Still Cameras
Media Players
Portable Instruments
Point of Load Regulation
TYPICAL APPLICATIO
100
90
80
EFFICIENCY (%)
70
60
50
40
30
20
10
V
OUT
= 1.8V
1.1μH
V
IN
C
IN
22μF
CER
V
IN
SW
22pF
C
OUT
22μF
CER
634k
316k
3564 TA01a
V
OUT
1.8V
LTC3564
RUN
GND
V
FB
0
0.1
1
10
100
1000
OUTPUT CURRENT (mA)
U
10
1
POWER LOSS (W)
0.1
0.01
0.001
V
IN
= 2.7V
V
IN
= 3.6V
V
IN
= 4.2V
0.0001
0.00001
10000
3564 TA01b
U
U
3564f
1
LTC3564
ABSOLUTE
AXI U RATI GS
(Note 1)
Operating Junction Temperature Range
(Notes 2, 3, 6) ...................................... – 40°C to 125°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
Input Supply Voltage .................................. – 0.3V to 6V
RUN, V
FB
Voltages ..................................... – 0.3V to V
IN
SW Voltage (DC) ......................... – 0.3V to (V
IN
+ 0.3V)
PI CO FIGURATIO
TOP VIEW
V
FB
1
GND 2
V
IN
3
5 RUN
4 SW
S5 PACKAGE
5-LEAD PLASTIC TSOT-23
T
JMAX
= 125°C,
θ
JA
= 215°C/ W,
θ
JC
= 50°C/ W
ORDER I FOR ATIO
LEAD FREE FINISH
LTC3564ES5#PBF
LTC3564IS5#PBF
LTC3564EDCB#PBF
LTC3564IDCB#PBF
TAPE AND REEL
LTC3564ES5#TRPBF
LTC3564IS5#TRPBF
LTC3564EDCB#TRPBF
LTC3564IDCB#TRPBF
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/
ELECTRICAL CHARACTERISTICS
The
●
denotes specifications which apply over the full operating junction temperature range, otherwise specifications are T
A
= 25°C.
V
IN
= 3.6V unless otherwise specified.
SYMBOL
I
VFB
V
FB
ΔV
FB
I
PK
V
LOADREG
V
IN
PARAMETER
Feedback Current
Regulated Feedback Voltage
Reference Voltage Line Regulation
Peak Inductor Current
Output Voltage Load Regulation
Input Voltage Range
●
CONDITIONS
●
(Note 4)
V
IN
= 2.5V to 5.5V (Note 4)
V
IN
= 3V, V
FB
= 0.5V, Duty Cycle < 35%
2
U
U
W W
U
W
W
U
U
U
TOP VIEW
SW 1
PGND 2
V
IN
3
7
6 RUN
5 SGND
4 V
FB
DCB PACKAGE
6-LEAD (2mm
×
3mm) PLASTIC DFN
T
JMAX
= 125°C,
θ
JA
= 64°C/ W,
θ
JC
= 10.6°C/ W
EXPOSED PAD (PIN 7) IS SGND, MUST BE SOLDERED TO PCB
PART MARKING*
LTCYJ
LTCYJ
LDTQ
LDTQ
PACKAGE DESCRIPTION
5-Lead Plastic TSOT-23
5-Lead Plastic TSOT-23
6-Lead (2mm
×
3mm) Plastic DFN
6-Lead (2mm
×
3mm) Plastic DFN
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
MIN
●
TYP
0.6
0.04
2.0
0.5
MAX
±30
0.6120
0.4
2.5
5.5
UNITS
nA
V
%/V
A
%
V
0.5880
1.5
2.5
3564f
LTC3564
ELECTRICAL CHARACTERISTICS
The
●
denotes specifications which apply over the full operating junction temperature range, otherwise specifications are T
A
= 25°C.
V
IN
= 3.6V unless otherwise specified.
SYMBOL
I
S
PARAMETER
Input DC Bias Current
Active Mode
Sleep Mode
Shutdown
Oscillator Frequency
R
DS(ON)
of P-Channel FET
R
DS(ON)
of N-Channel FET
SW Leakage
RUN Threshold
RUN Leakage Current
Soft-Start Time
V
FB
from 10% to 90% Full Scale
CONDITIONS
(Note 5)
V
FB
= 0.5V or V
OUT
= 90%, I
LOAD
= 0A
V
FB
= 0.62V or V
OUT
= 103%, I
LOAD
= 0A
V
RUN
= 0V, V
IN
= 4.2V
V
FB
= 0.6V or V
OUT
= 100%
S5 Package
DCB Package
S5 Package
DCB Package
V
RUN
= 0V, V
SW
= 0V or 5V, V
IN
= 5V
●
●
●
MIN
TYP
300
20
0.1
MAX
400
35
1
2.7
0.2
0.2
±1
1.5
±1
1.2
UNITS
μA
μA
μA
MHz
Ω
Ω
Ω
Ω
μA
V
μA
ms
f
OSC
R
PFET
R
NFET
I
LSW
V
RUN
I
RUN
t
SOFTSTART
1.8
2.25
0.15
0.15
0.15
0.15
±0.01
0.3
0.6
1
±0.01
0.9
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
reliabilty and lifetime.
Note 2:
The LTC3564E is guaranteed to meet performance specifications
from 0°C to 125°C junction temperature. Specifications over the –40°C to
125°C operating junction termperature range are assured by design,
characterization and correlation with statistical process controls. The
LTC3564I is guaranteed over the full –40°C to 125°C operating junction
temperature range. High junction temperatures degrade operating
lifetimes. Operating lifetime is derated at junction temperatures greater
than 125°C.
Note 3:
T
J
is calculated from the ambient temperature T
A
and power
dissipation P
D
according to the following formula:
LTC3564ES5: T
J
= T
A
+ (P
D
)(215°C/W)
LTC3564EDCB: T
J
= T
A
+ (P
D
)(64°C/W)
Note 4:
The LTC3564 is tested in a proprietary test mode.
Note 5:
Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency.
Note 6:
This IC includes overtemperature protection that is intended to
protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the specified maximum operating junction
The activity ended on January 5, 2015. I am ashamed that I did not achieve the expected goal! There is no reason, it is just that there are too many things in the company [size=14px] and I am on a bus...
[i=s]This post was last edited by wo4fisher on 2015-11-18 12:45[/i] [size=3] [/size][table=98%] [tr][td][align=right][align=center][size=5][color=#666666][url=https://bbs.eeworld.com.cn/thread-476471-...
There is such a person in the company, who will come to your cubicle to chat with you when you are drowsy in the afternoon, give you a lot of advice on how to deal with your boss when you are confused...
On August 24th, Tesla CEO Elon
Musk
revealed information about the upcoming FSD V14, claiming it will outperform human drivers. Tesla FSD lead Ashok stated last year that FSD version 12.5, ...[Details]
A vacuum eutectic furnace is a critical piece of equipment used in the manufacturing and processing of various materials, particularly in the fields of microelectronics and nanotechnology. One of t...[Details]
The mass production process of the new generation of cockpit platform has started, and the smart cockpit market has entered a new bonus cycle of technology iteration and platform upgrade.
...[Details]
According to foreign media reports, Nissan Motor has recently reached a cooperation with US battery technology company LiCAP Technologies to jointly promote the research and development of next-gen...[Details]
Keysight Technologies is combining its electromagnetic simulator with Synopsys' AI-driven RF design migration flow to create an integrated design flow for migrating from TSMC's N6RF+ process techno...[Details]
1. Ease of Use: The HMI module should be designed to be simple and clear, allowing users to easily operate and configure the energy storage device.
2. Ease of Maintenance: The HMI module should...[Details]
On August 22, according to CNBC's report today, the National Highway Traffic Safety Administration (NHTSA) is launching an investigation into Tesla, and the latter is questioned whether it has fail...[Details]
Plessey Semiconductors has been acquired by Haylo Labs, which was established in March last year with a $100 million, five-year loan from Chinese technology company Goertek.
Haylo Labs w...[Details]
According to foreign media reports, Ford Motor has applied to the U.S. Patent and Social Security Office (USPTO) for a patent for a door anti-collision system that may be used in future Ford vehicl...[Details]
Introduction: In digital circuit calculations, there is no concept of decimal points. You know where the decimal is, but the circuit does not know where the decimal point is. Therefore, you need to...[Details]
I recently read an article in the Wall Street Journal titled "We need the right to repair our gadgets" (reference original article: ). The author was very angry about the phenomenon of "planned obs...[Details]
Most cameras on the market use chips manufactured by Japanese companies like Sony, Sharp, Panasonic, and LG. South Korea now has the capability to produce chips, but the quality is somewhat inferio...[Details]
Introduction: Traditionally, lead-acid batteries have primarily been used to provide backup power and power regulation based on location. In typical applications, the battery's actual use (discharg...[Details]
The characteristics of electric vehicles place high demands on the motors they use. To increase top speed, the motor should have high instantaneous power and power density (W/kg); to increase drivi...[Details]
Munich, Germany, August 19, 2025 –
Infineon Technologies AG, a global semiconductor leader in power systems and the Internet of Things, announced today that its AIROC™ CYW20829 Bluetooth® low e...[Details]
Embedded System
京公网安备 11010802033920号
EEWORLD
