поискавой системы для электроныых деталей
  Russian  ▼
ALLDATASHEETRU.COM

X  

LM2738YMY датащи(PDF) 10 Page - Texas Instruments

номер детали LM2738YMY
подробное описание детали  1.5A Step-Down DC-DC Switching Regulator
Download  40 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
производитель  TI1 [Texas Instruments]
домашняя страница  http://www.ti.com
Logo TI1 - Texas Instruments

LM2738YMY датащи(HTML) 10 Page - Texas Instruments

Back Button LM2738YMY Datasheet HTML 6Page - Texas Instruments LM2738YMY Datasheet HTML 7Page - Texas Instruments LM2738YMY Datasheet HTML 8Page - Texas Instruments LM2738YMY Datasheet HTML 9Page - Texas Instruments LM2738YMY Datasheet HTML 10Page - Texas Instruments LM2738YMY Datasheet HTML 11Page - Texas Instruments LM2738YMY Datasheet HTML 12Page - Texas Instruments LM2738YMY Datasheet HTML 13Page - Texas Instruments LM2738YMY Datasheet HTML 14Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 10 / 40 page
background image
0
0
VIN
VD
TON
t
t
Inductor
Current
D = TON/TSW
VSW
TOFF
TSW
IL
IPK
SW
Voltage
10
LM2738
SNVS556C – APRIL 2008 – REVISED JANUARY 2016
www.ti.com
Product Folder Links: LM2738
Submit Documentation Feedback
Copyright © 2008–2016, Texas Instruments Incorporated
7 Detailed Description
7.1 Overview
The LM2738 is a constant frequency PWM buck regulator device that delivers a 1.5-A load current. The regulator
has a preset switching frequency of either 550 kHz (LM2738Y) or 1.6 MHz (LM2738X). These high frequencies
allow the LM2738 to operate with small surface-mount capacitors and inductors, resulting in DC-DC converters
that require a minimum amount of board space. The LM2738 is internally compensated, so it is simple to use and
requires few external components. The LM2738 uses current-mode control to regulate the output voltage.
The LM2738 supplies a regulated output voltage by switching the internal NMOS control switch at constant
frequency and variable duty cycle. A switching cycle begins at the falling edge of the reset pulse generated by
the internal oscillator. When this pulse goes low, the output control logic turns on the internal NMOS control
switch. During this on time, the SW pin voltage (VSW) swings up to approximately VIN, and the inductor current
(IL) increases with a linear slope. IL is measured by the current-sense amplifier, which generates an output
proportional to the switch current. The sense signal is summed with the regulator’s corrective ramp and
compared to the error amplifier’s output, which is proportional to the difference between the feedback voltage
and VREF. When the PWM comparator output goes high, the output switch turns off until the next switching cycle
begins. During the switch off-time, inductor current discharges through Schottky diode D1, which forces the SW
pin to swing below ground by the forward voltage (VD) of the catch diode. The regulator loop adjusts the duty
cycle (D) to maintain a constant output voltage. See Functional Block Diagram and Figure 25.
Figure 25. LM2738 Waveforms of SW Pin Voltage and Inductor Current


Аналогичный номер детали - LM2738YMY

производительномер деталидатащиподробное описание детали
logo
National Semiconductor ...
LM2738YMY NSC-LM2738YMY Datasheet
605Kb / 28P
   550kHz/1.6MHz 1.5A Step-Down DC-DC Switching Regulator
LM2738YMYX NSC-LM2738YMYX Datasheet
605Kb / 28P
   550kHz/1.6MHz 1.5A Step-Down DC-DC Switching Regulator
More results

Аналогичное описание - LM2738YMY

производительномер деталидатащиподробное описание детали
logo
National Semiconductor ...
LM2738 NSC-LM2738 Datasheet
605Kb / 28P
   550kHz/1.6MHz 1.5A Step-Down DC-DC Switching Regulator
logo
Texas Instruments
LM2738 TI-LM2738_15 Datasheet
1Mb / 38P
[Old version datasheet]   LM2738 550kHz/1.6MHz 1.5A Step-Down DC-DC Switching Regulator
logo
Eutech Microelectronics...
EUP3291 EUTECH-EUP3291 Datasheet
736Kb / 1P
   1.5A, 2.25MHz Synchronous Step-Down DC/DC Regulator
logo
Texas Instruments
LM2833 TI1-LM2833 Datasheet
1Mb / 30P
[Old version datasheet]   Step-Down DC-DC Switching Regulator
logo
National Semiconductor ...
LM2831 NSC-LM2831 Datasheet
890Kb / 27P
   High Frequency 1.5A Load - Step-Down DC-DC Regulator
logo
Texas Instruments
LM2831 TI1-LM2831_14 Datasheet
1Mb / 34P
[Old version datasheet]   High Frequency 1.5A Load - Step-Down DC-DC Regulator
logo
STMicroelectronics
L5983 STMICROELECTRONICS-L5983 Datasheet
938Kb / 37P
   1.5A step-down switching regulator
L5971 STMICROELECTRONICS-L5971 Datasheet
96Kb / 11P
   1.5A STEP DOWN SWITCHING REGULATOR
E-L4971 STMICROELECTRONICS-E-L4971 Datasheet
574Kb / 13P
   1.5A STEP DOWN SWITCHING REGULATOR
L4971 STMICROELECTRONICS-L4971_05 Datasheet
574Kb / 13P
   1.5A STEP DOWN SWITCHING REGULATOR
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 29 30 31 32 33 34 35 36 37 38 39 40


датащи скачать

Go To PDF Page


ссылки URL




Конфиденциальность
ALLDATASHEETRU.COM
Вашему бизинису помогли Аллдатащит?  [ DONATE ] 

Что такое Аллдатащит   |   реклама   |   контакт   |   Конфиденциальность   |   обмен ссыками   |   поиск по производителю
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