Motor de Búsqueda de Datasheet de Componentes Electrónicos
  Spanish  ▼
ALLDATASHEET.ES

X  

LM2677 Datasheet(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
No. de pieza LM2677
Descripción Electrónicos  SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator with Sync
Download  26 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrónico  NSC [National Semiconductor (TI)]
Página de inicio  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM2677 Datasheet(HTML) 1 Page - National Semiconductor (TI)

  LM2677 Datasheet HTML 1Page - National Semiconductor (TI) LM2677 Datasheet HTML 2Page - National Semiconductor (TI) LM2677 Datasheet HTML 3Page - National Semiconductor (TI) LM2677 Datasheet HTML 4Page - National Semiconductor (TI) LM2677 Datasheet HTML 5Page - National Semiconductor (TI) LM2677 Datasheet HTML 6Page - National Semiconductor (TI) LM2677 Datasheet HTML 7Page - National Semiconductor (TI) LM2677 Datasheet HTML 8Page - National Semiconductor (TI) LM2677 Datasheet HTML 9Page - National Semiconductor (TI) Next Button
Zoom Inzoom in Zoom Outzoom out
 1 / 26 page
background image
LM2677
SIMPLE SWITCHER® High Efficiency 5A Step-Down
Voltage Regulator with Sync
General Description
The LM2677 series of regulators are monolithic integrated
circuits which provide all of the active functions for a step-
down (buck) switching regulator capable of driving up to 5A
loads with excellent line and load regulation characteristics.
High efficiency (>90%) is obtained through the use of a low
ON-resistance DMOS power switch. The series consists of
fixed output voltages of 3.3V, 5V and 12V and an adjustable
output version.
The SIMPLE SWITCHER concept provides for a complete
design using a minimum number of external components.
The switching clock frequency can be provided by an inter-
nal fixed frequency oscillator (260KHz) or from an externally
provided clock in the range of 280KHz to 400Khz which
allows the use of physically smaller sized components. A
family of standard inductors for use with the LM2677 are
available from several manufacturers to greatly simplify the
design process. The external Sync clock provides direct and
precise control of the output ripple frequency for consistent
filtering or frequency spectrum positioning.
The LM2677 series also has built in thermal shutdown,
current limiting and an ON/OFF control input that can power
down the regulator to a low 50µA quiescent current standby
condition. The output voltage is guaranteed to a ±2% toler-
ance.
Features
n
Efficiency up to 92%
n
Simple and easy to design with (using off-the-shelf
external components)
n
100 m
Ω DMOS output switch
n
3.3V, 5V and 12V fixed output and adjustable (1.2V to
37V ) versions
n
50µA standby current when switched OFF
n ±
2%maximum output tolerance over full line and load
conditions
n
Wide input voltage range: 8V to 40V
n
External Sync clock capability (280KHz to 400KHz)
n
260 KHz fixed frequency internal oscillator
n
−40 to +125˚C operating junction temperature range
Applications
n
Simple to design, high efficiency (>90%) step-down
switching regulators
n
Efficient system pre-regulator for linear voltage
regulators
n
Battery chargers
n
Communications and radio equipment regulator with
synchronized clock frequency
Typical Application
10130103
SIMPLE SWITCHER® is a registered trademark of National Semiconductor Corporation.
April 2005
© 2005 National Semiconductor Corporation
DS101301
www.national.com


Número de pieza similar - LM2677

Fabricante ElectrónicoNo. de piezaDatasheetDescripción Electrónicos
logo
Texas Instruments
LM2677S-12/NOPB TI1-LM2677S-12/NOPB Datasheet
1Mb / 34P
[Old version datasheet]   LM2677 SIMPLE SWITCHER짰 High Efficiency 5A Step-Down Voltage Regulator
LM2677S-3.3 TI1-LM2677S-3.3 Datasheet
1Mb / 34P
[Old version datasheet]   LM2677 SIMPLE SWITCHER짰 High Efficiency 5A Step-Down Voltage Regulator
LM2677S-3.3/NOPB TI1-LM2677S-3.3/NOPB Datasheet
1Mb / 34P
[Old version datasheet]   LM2677 SIMPLE SWITCHER짰 High Efficiency 5A Step-Down Voltage Regulator
LM2677S-5.0 TI1-LM2677S-5.0 Datasheet
1Mb / 34P
[Old version datasheet]   LM2677 SIMPLE SWITCHER짰 High Efficiency 5A Step-Down Voltage Regulator
LM2677S-5.0/NOPB TI1-LM2677S-5.0/NOPB Datasheet
1Mb / 34P
[Old version datasheet]   LM2677 SIMPLE SWITCHER짰 High Efficiency 5A Step-Down Voltage Regulator
More results

Descripción similar - LM2677

Fabricante ElectrónicoNo. de piezaDatasheetDescripción Electrónicos
logo
National Semiconductor ...
LM2678 NSC-LM2678 Datasheet
459Kb / 27P
   SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator
LM2678S-12 NSC-LM2678S-12 Datasheet
356Kb / 23P
   SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator
LM2670 NSC-LM2670 Datasheet
459Kb / 26P
   SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator with Sync
logo
Texas Instruments
LM2678S-ADJ TI-LM2678S-ADJ Datasheet
1Mb / 35P
[Old version datasheet]   LM2678 SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator
LM2678SX-3.3 TI-LM2678SX-3.3 Datasheet
1Mb / 35P
[Old version datasheet]   LM2678 SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator
LM2678SD-5.0 TI-LM2678SD-5.0 Datasheet
1Mb / 35P
[Old version datasheet]   LM2678 SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator
LM2670SX-33 TI-LM2670SX-33 Datasheet
1Mb / 36P
[Old version datasheet]   LM2670 SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator with Sync
LM2670EP TI1-LM2670EP Datasheet
494Kb / 28P
[Old version datasheet]   LM2670EP Enhanced Plastic SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator with Sync
logo
National Semiconductor ...
LM2676 NSC-LM2676 Datasheet
350Kb / 25P
   SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator
LM2678 NSC-LM2678_05 Datasheet
836Kb / 27P
   SIMPLE SWITCHER짰 High Efficiency 5A Step-Down Voltage 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


Datasheet Descarga

Go To PDF Page


Enlace URL




Política de Privacidad
ALLDATASHEET.ES
¿ALLDATASHEET es útil para Ud.?  [ DONATE ] 

Todo acerca de Alldatasheet   |   Publicidad   |   Contáctenos   |   Política de Privacidad   |   Intercambio de Enlaces   |   Lista de Fabricantes
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