công cụ tìm kiếm bảng dữ liệu linh kiện điện tử
  Vietnamese  ▼
ALLDATASHEET.VN

X  

LMZ10504 bảng dữ liệu(PDF) 9 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
tên linh kiện LMZ10504
Giải thích chi tiết về linh kiện  4A SIMPLE SWITCHER짰Power Module with 5.5V Maximum Input Voltage
Download  22 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
nhà sản xuất  NSC [National Semiconductor (TI)]
Trang chủ  http://www.national.com
Logo NSC - National Semiconductor (TI)

LMZ10504 bảng dữ liệu(HTML) 9 Page - National Semiconductor (TI)

Back Button LMZ10504 Datasheet HTML 5Page - National Semiconductor (TI) LMZ10504 Datasheet HTML 6Page - National Semiconductor (TI) LMZ10504 Datasheet HTML 7Page - National Semiconductor (TI) LMZ10504 Datasheet HTML 8Page - National Semiconductor (TI) LMZ10504 Datasheet HTML 9Page - National Semiconductor (TI) LMZ10504 Datasheet HTML 10Page - National Semiconductor (TI) LMZ10504 Datasheet HTML 11Page - National Semiconductor (TI) LMZ10504 Datasheet HTML 12Page - National Semiconductor (TI) LMZ10504 Datasheet HTML 13Page - National Semiconductor (TI) Next Button
Zoom Inzoom in Zoom Outzoom out
 9 / 22 page
background image
A second criteria before finalizing the C
in bypass capacitor is
the RMS current capability. The necessary RMS current rat-
ing of the input capacitor to a buck regulator can be estimated
by
With this high AC current present in the input capacitor, the
RMS current rating becomes an important parameter. The
maximum input capacitor ripple voltage and RMS current oc-
cur at 50% duty cycle. Select an input capacitor rated for at
least the maximum calculated I
Cin(RMS).
Additional bulk capacitance with higher ESR may be required
to damp any resonance effects of the input capacitance and
parasitic inductance.
Output Capacitor Selection
In general, 22 µF to 100 µF high quality dielectric (X5R, X7R)
ceramic capacitor rated at twice the maximum output voltage
is sufficient given the optimal high frequency characteristics
and low ESR of ceramic dielectrics. Although, the output ca-
pacitor can also be of electrolytic chemistry for increased
capacitance density.
Two output capacitance equations are required to determine
the minimum output capacitance. One equation determines
the output capacitance (C
O) based on PWM ripple voltage.
The second equation determines C
O based on the load tran-
sient characteristics. Select the largest capacitance value of
the two.
The minimum capacitance, given the maximum output volt-
age ripple (
ΔV
OUT) requirement, is determined by the follow-
ing equation:
Where the peak to peak inductor current ripple (
Δi
L) is equal
to:
R
ESR is the total output capacitor ESR, L is the inductance
value of the internal power inductor, where L = 1.5 µH, and
f
SW = 1 MHz. Therefore, per the design example:
The minimum output capacitance requirement due to the
PWM ripple voltage is:
Three miliohms is a typical R
ESR value for ceramic capacitors.
The following equation provides a good first pass capacitance
requirement for a load transient:
Where I
step is the peak to peak load step, VFB = 0.8V, and
ΔV
o_tran is the maximum output voltage deviation, which is
±20 mV.
Therefore the capacitance requirement for the given design
parameters is:
In this particular design the output capacitance is determined
by the load transient requirements.
Table 1 lists some examples of commercially available ca-
pacitors that can be used with the LMZ10504.
9
www.national.com


Số phần tương tự - LMZ10504

nhà sản xuấttên linh kiệnbảng dữ liệuGiải thích chi tiết về linh kiện
logo
National Semiconductor ...
LMZ10504 NSC-LMZ10504 Datasheet
657Kb / 22P
   4A SIMPLE SWITCHER짰 Power Module with 5.5V Maximum
logo
Texas Instruments
LMZ10504 TI-LMZ10504 Datasheet
1Mb / 35P
[Old version datasheet]   4A SIMPLE SWITCHER Power Module With 5.5-V Maximum Input Voltage
LMZ10504 TI1-LMZ10504 Datasheet
1Mb / 35P
[Old version datasheet]   4-A SIMPLE SWITCHER짰 Power Module With 5.5-V Maximum Input Voltage
logo
National Semiconductor ...
LMZ10504EXT NSC-LMZ10504EXT Datasheet
1Mb / 22P
   4A SIMPLE SWITCHER짰 Power Module with 5.5V Maximum Input Voltage for Military and Rugged Applications
logo
Texas Instruments
LMZ10504EXT TI-LMZ10504EXT Datasheet
4Mb / 36P
[Old version datasheet]   4A SIMPLE SWITCHER Power Module With 5.5-V Maximum Input Voltage for Demanding and Rugged Applications
More results

Mô tả tương tự - LMZ10504

nhà sản xuấttên linh kiệnbảng dữ liệuGiải thích chi tiết về linh kiện
logo
National Semiconductor ...
LMZ14203 NSC-LMZ14203_1 Datasheet
1Mb / 18P
   3A SIMPLE SWITCHER짰Power Module with 42V Maximum Input Voltage
LMZ10504 NSC-LMZ10504 Datasheet
657Kb / 22P
   4A SIMPLE SWITCHER짰 Power Module with 5.5V Maximum
LMZ10505_1006 NSC-LMZ10505_1006 Datasheet
662Kb / 22P
   5A SIMPLE SWITCHER짰 Power Module with 5.5V Maximum Input Voltage
LMZ10503_1006 NSC-LMZ10503_1006 Datasheet
980Kb / 22P
   3A SIMPLE SWITCHER짰 Power Module with 5.5V Maximum Input Voltage
LMZ10505 NSC-LMZ10505 Datasheet
662Kb / 22P
   5A SIMPLE SWITCHER짰 Power Module with 5.5V Maximum Input Voltage
LMZ10504EXT NSC-LMZ10504EXT Datasheet
1Mb / 22P
   4A SIMPLE SWITCHER짰 Power Module with 5.5V Maximum Input Voltage for Military and Rugged Applications
LMZ10503 NSC-LMZ10503 Datasheet
980Kb / 22P
   3A SIMPLE SWITCHER짰 Power Module with 5.5V Maximum Input Voltage
LMZ10500 NSC-LMZ10500 Datasheet
1Mb / 20P
   650mA SIMPLE SWITCHER짰 Nano Module with 5.5V Maximum Input Voltage
LMZ10501 NSC-LMZ10501 Datasheet
1Mb / 20P
   1A SIMPLE SWITCHER짰 Nano Module with 5.5V Maximum Input Voltage
logo
Texas Instruments
LMZ10501SHE TI-LMZ10501SHE Datasheet
864Kb / 25P
[Old version datasheet]   LMZ10501 1A SIMPLE SWITCHER Nano Module with 5.5V Maximum Input Voltage
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


bảng dữ liệu tải về

Go To PDF Page


Link URL




Chính sách bảo mật
ALLDATASHEET.VN
Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không?  [ DONATE ] 

Alldatasheet là   |   Quảng cáo   |   Liên lạc với chúng tôi   |   Chính sách bảo mật   |   Trao đổi link   |   Tìm kiếm theo nhà sản xuất
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