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

X  

CB2016T2R2M 数据表(PDF) 7 Page - Linear Technology

部件名 CB2016T2R2M
功能描述  2.25MHz, 300mA Synchronous Step-Down
Download  16 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

CB2016T2R2M 数据表(HTML) 7 Page - Linear Technology

Back Button CB2016T2R2M Datasheet HTML 3Page - Linear Technology CB2016T2R2M Datasheet HTML 4Page - Linear Technology CB2016T2R2M Datasheet HTML 5Page - Linear Technology CB2016T2R2M Datasheet HTML 6Page - Linear Technology CB2016T2R2M Datasheet HTML 7Page - Linear Technology CB2016T2R2M Datasheet HTML 8Page - Linear Technology CB2016T2R2M Datasheet HTML 9Page - Linear Technology CB2016T2R2M Datasheet HTML 10Page - Linear Technology CB2016T2R2M Datasheet HTML 11Page - Linear Technology Next Button
Zoom Inzoom in Zoom Outzoom out
 7 / 16 page
background image
7
LTC3410
3410fb
OPERATIO (Refer to Functional Diagram)
Main Control Loop
The LTC3410 uses a constant frequency, current mode
step-down architecture. Both the main (P-channel
MOSFET) and synchronous (N-channel MOSFET) switches
are internal. During normal operation, the internal top
power MOSFET is turned on each cycle when the oscillator
sets the RS latch, and turned off when the current com-
parator, ICOMP, resets the RS latch. The peak inductor
current at which ICOMP resets the RS latch, is controlled by
the output of error amplifier EA. The VFB pin, described in
the Pin Functions section, allows EA to receive an output
feedback voltage from an external resistive divider. When
the load current increases, it causes a slight decrease in
the feedback voltage relative to the 0.8V reference, which
in turn, causes the EA amplifier’s output voltage to in-
crease until the average inductor current matches the new
load current. While the top MOSFET is off, the bottom
MOSFET is turned on until either the inductor current
starts to reverse, as indicated by the current reversal
comparator IRCMP, or the beginning of the next clock cycle.
Burst Mode Operation
The LTC3410 is capable of Burst Mode operation in which
the internal power MOSFETs operate intermittently based
on load demand.
When the converter is in Burst Mode operation, the peak
current of the inductor is set to approximately 70mA re-
gardless of the output load. Each burst event can last from
a few cycles at light loads to almost continuously cycling
with short sleep intervals at moderate loads. In between
these burst events, the power MOSFETs and any unneeded
circuitry are turned off, reducing the quiescent current to
26
µA. In this sleep state, the load current is being supplied
solely from the output capacitor. As the output voltage
droops, the EA amplifier’s output rises above the sleep
threshold signaling the BURST comparator to trip and turn
the top MOSFET on. This process repeats at a rate that is
dependent on the load demand.
Short-Circuit Protection
When the output is shorted to ground, the frequency of the
oscillator is reduced to about 310kHz, 1/7 the nominal
frequency. This frequency foldback ensures that the in-
ductor current has more time to decay, thereby preventing
runaway. The oscillator’s frequency will progressively
increase to 2.25MHz when VFB rises above 0V.
Dropout Operation
As the input supply voltage decreases to a value approach-
ing the output voltage, the duty cycle increases toward the
maximum on-time. Further reduction of the supply volt-
age forces the main switch to remain on for more than one
cycle until it reaches 100% duty cycle. The output voltage
will then be determined by the input voltage minus the
voltage drop across the P-channel MOSFET and the
inductor.
Another important detail to remember is that at low input
supply voltages, the RDS(ON) of the P-channel switch
increases (see Typical Performance Characteristics).
Therefore, the user should calculate the power dissipation
when the LTC3410 is used at 100% duty cycle with low
input voltage (See Thermal Considerations in the Applica-
tions Information section).
Slope Compensation and Inductor Peak Current
Slope compensation provides stability in constant fre-
quency architectures by preventing subharmonic oscilla-
tions at high duty cycles. It is accomplished internally by
adding a compensating ramp to the inductor current
signal at duty cycles in excess of 40%. Normally, this
results in a reduction of maximum inductor peak current
for duty cycles > 40%. However, the LTC3410 uses a
patented scheme that counteracts this compensating
ramp, which allows the maximum inductor peak current
to remain unaffected throughout all duty cycles.


类似零件编号 - CB2016T2R2M

制造商部件名数据表功能描述
logo
List of Unclassifed Man...
CB2016T2R2M ETC1-CB2016T2R2M Datasheet
781Kb / 16P
   WOUND CHIP INDUCTORS
logo
Taiyo Yuden (U.S.A.), I...
CB2016T2R2M TAIYO-YUDEN-CB2016T2R2M Datasheet
2Mb / 47P
   WOUND CHIP INDUCTORS
logo
Linear Integrated Syste...
CB2016T2R2M LINEAR-CB2016T2R2M Datasheet
278Kb / 16P
   Dual Monolithic 300mA Synchronous Step-Down Regulaor
logo
Taiyo Yuden (U.S.A.), I...
CB2016T2R2M TAIYO-YUDEN-CB2016T2R2M Datasheet
289Kb / 3P
   Wire-wound Chip Power Inductors (CB series)[CB]
CB2016T2R2M TAIYO-YUDEN-CB2016T2R2M Datasheet
361Kb / 3P
   Wire-wound Ferrite Power Inductors LSQN/LSQPA series for General Electronic Equipment
2021/8/3
More results

类似说明 - CB2016T2R2M

制造商部件名数据表功能描述
logo
Linear Technology
LTC3410-1.875 LINER-LTC3410-1.875_15 Datasheet
238Kb / 16P
   2.25MHz, 300mA Synchronous Step-Down Regulator in SC70
LTC3410-1.875 LINER-LTC3410-1.875 Datasheet
232Kb / 16P
   2.25MHz, 300mA Synchronous Step-Down Regulator in SC70
LTC3410 LINER-LTC3410 Datasheet
331Kb / 16P
   2.25MHz, 300mA Synchronous Step-Down Regulator in SC70
LTC3410 LINER-LTC3410_15 Datasheet
337Kb / 16P
   2.25MHz, 300mA Synchronous Step-Down Regulator in SC70
LTC3410B LINER-LTC3410B Datasheet
290Kb / 16P
   2.25MHz, 300mA Synchronous Step-Down Regulator in SC70
LTC3410B LINER-LTC3410B_15 Datasheet
295Kb / 16P
   2.25MHz, 300mA Synchronous Step-Down Regulator in SC70
LTC3544 LINER-LTC3544 Datasheet
290Kb / 16P
   Quad Synchronous Step-Down Regulator: 2.25MHz, 300mA, 200mA, 200mA, 100mA
logo
Linear Integrated Syste...
LTC3542EDC LINEAR-LTC3542EDC Datasheet
199Kb / 16P
   500mA, 2.25MHz Synchronous Step-Down
logo
Linear Technology
LTC3544B LINER-LTC3544B Datasheet
269Kb / 16P
   Quad Synchronous Step-Down Regulator: 2.25MHz, 300mA, 200mA, 200mA, 100mA
LTC3564 LINER-LTC3564 Datasheet
265Kb / 20P
   2.25MHz, 1.25A Synchronous Step-Down Regulator
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16


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