数据搜索系统,热门电子元器件搜索
  Chinese  ▼
ALLDATASHEETCN.COM

X  

LTC3854EMSE 数据表(PDF) 1 Page - Linear Technology

部件名 LTC3854EMSE
功能描述  Small Footprint, Wide VIN Range Synchronous Step-Down DC/DC Controller
Download  28 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC3854EMSE 数据表(HTML) 1 Page - Linear Technology

  LTC3854EMSE Datasheet HTML 1Page - Linear Technology LTC3854EMSE Datasheet HTML 2Page - Linear Technology LTC3854EMSE Datasheet HTML 3Page - Linear Technology LTC3854EMSE Datasheet HTML 4Page - Linear Technology LTC3854EMSE Datasheet HTML 5Page - Linear Technology LTC3854EMSE Datasheet HTML 6Page - Linear Technology LTC3854EMSE Datasheet HTML 7Page - Linear Technology LTC3854EMSE Datasheet HTML 8Page - Linear Technology LTC3854EMSE Datasheet HTML 9Page - Linear Technology Next Button
Zoom Inzoom in Zoom Outzoom out
 1 / 28 page
background image
LTC3854

3854fa
Typical applicaTion
FeaTures
applicaTions
DescripTion
Small Footprint, Wide
VIN Range Synchronous
Step-Down DC/DC Controller
The LTC3854® is a high performance synchronous step-
down switching DC/DC controller that drives an all N-
channel synchronous power MOSFET stage.
TheLTC3854featuresa400kHzconstantfrequencycurrent
mode architecture. The LTC3854 operates from a 4.5V to
38V (40V absolute maximum) input voltage range and
regulates the output voltage from 0.8V to 5.5V.
The RUN/SS pin provides both soft-start and enable
features. OPTI-LOOP compensation allows the transient
response to be optimized over a wide range of output ca-
pacitanceandESRvalues.CurrentfoldbacklimitsMOSFET
dissipationduringshortcircuitconditions.Currentfoldback
functions are disabled during soft-start.
The LTC3854 has a minimum on-time at 75ns, making it
well suited for high step-down ratios. The strong onboard
MOSFET drivers allow the use of high power external
MOSFETs to produce output currents up to 20A.
High Efficiency Synchronous Step-Down Converter
n
Wide Operating VIN Range: 4.5V to 38V
n
RSENSE or DCR Current Sensing
n
±1% 0.8V Reference Accuracy Over Temperature
n
400kHz Switching Frequency
n
Dual N-channel MOSFET Synchronous Drive
n
Very Low Dropout Operation: 97% Duty Cycle
n
Starts Up Into Pre-Biased Output
n
Adjustable Output Voltage Soft-Start
n
Output Current Foldback Limiting
(Disabled During Soft-Start)
n
Output Overvoltage Protection
n
5V LDO for External Gate Drive
n
OPTI-LOOP® Compensation Minimizes COUT
n
Low Shutdown IQ: 15µA
n
Tiny Thermally Enhanced 12-Pin 2mm
× 3mm DFN
and MSOP Packages
n
Automotive Systems
n
Telecom Systems
n
Industrial Equipment
n
Distributed DC Power Systems
3854 TA01
LTC3854
0.1µF
0.1µF
47µF
50V
4.7µF
100pF
2200pF
4.7µH
AT 8.2mΩ DCR
150µF
VOUT
5V
7A
VIN
6V TO 38V
42.2k
8.06k
10k
VIN
TG
BOOST
SW
INTVCC
BG
GND
RUN/SS
ITH
FB
SENSE
SENSE+
0.22µF
5.49k
4.99k
+
Efficiency and Power Loss
vs Load Current
LOAD CURRENT (A)
1
97
95
94
96
93
92
2.0
1.6
0.8
1.2
0.4
0
3
4
5
6
3854 TA01b
EFFICIENCY
VIN = 12V
POWER LOSS
7
2
L
, LT, LTC, LTM, Linear Technology, the Linear logo and OPTI-LOOP are registered trademarks
of Linear Technology Corporation. All other trademarks are the property of their respective
owners. Protected by U.S. Patents, including 5705919, 6498466, 5408150, 6222231.


类似零件编号 - LTC3854EMSE

制造商部件名数据表功能描述
logo
Linear Technology
LTC3854 LINER-LTC3854 Datasheet
465Kb / 36P
   Current Mode Synchronous Controller for Sub Milliohm DCR Sensing
LTC3854 LINER-LTC3854 Datasheet
1Mb / 30P
   Low IQ Synchronous Step-Down Controller
LTC3854 LINER-LTC3854_15 Datasheet
539Kb / 28P
   Small Footprint, Wide VIN Range Synchronous Step-Down DC/DC Controller
More results

类似说明 - LTC3854EMSE

制造商部件名数据表功能描述
logo
Linear Technology
LTC3854 LINER-LTC3854_15 Datasheet
539Kb / 28P
   Small Footprint, Wide VIN Range Synchronous Step-Down DC/DC Controller
logo
Analog Devices
ADP1851 AD-ADP1851 Datasheet
1Mb / 24P
   Wide Range Input, Synchronous, Step-Down DC-to-DC Controller
REV. B
logo
Linear Technology
LTC7812EUH LINER-LTC7812EUH Datasheet
429Kb / 14P
   Wide VIN, Step-Up Step-Down DC/DC Converter
LTC1773 LINER-LTC1773_15 Datasheet
298Kb / 20P
   Synchronous Step-Down DC/DC Controller
LTC1773 LINER-LTC1773 Datasheet
293Kb / 20P
   Synchronous Step-Down DC/DC Controller
logo
List of Unclassifed Man...
ML3406 ETC1-ML3406 Datasheet
730Kb / 12P
   Synchronous Step-Down DC-DC Controller
logo
Texas Instruments
TPS43061-312168 TI1-TPS43061-312168 Datasheet
1Mb / 38P
[Old version datasheet]   Low Quiescent Current Synchronous Boost DC-DC Controller with Wide VIN Range
TPS43060 TI-TPS43060 Datasheet
1Mb / 32P
[Old version datasheet]   Low Quiescent Current Synchronous Boost DC-DC Controller with Wide VIN Range
TPS43060 TI-TPS43060_15 Datasheet
1Mb / 43P
[Old version datasheet]   TPS4306x Low Quiescent Current Synchronous Boost DC-DC Controller With Wide VIN Range
logo
Linear Technology
LTC3878 LINER-LTC3878_15 Datasheet
408Kb / 26P
   Fast, Wide Operating Range No RSENSE Step-Down DC/DC Controller
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28


数据表 下载

Go To PDF Page


链接网址




隐私政策
ALLDATASHEETCN.COM
ALLDATASHEET是否为您带来帮助?  [ DONATE ] 

关于 Alldatasheet   |   广告服务   |   联系我们   |   隐私政策   |   链接交换   |   制造商名单
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com