전자부품 데이터시트 검색엔진
  Korean  ▼
ALLDATASHEET.CO.KR

X  

LM2771SD 데이터시트(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
부품명 LM2771SD
상세설명  Low-Ripple 250mA Switched Capacitor Step-Down DC/DC Converter
Download  10 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
제조업체  NSC [National Semiconductor (TI)]
홈페이지  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM2771SD 데이터시트(HTML) 1 Page - National Semiconductor (TI)

  LM2771SD Datasheet HTML 1Page - National Semiconductor (TI) LM2771SD Datasheet HTML 2Page - National Semiconductor (TI) LM2771SD Datasheet HTML 3Page - National Semiconductor (TI) LM2771SD Datasheet HTML 4Page - National Semiconductor (TI) LM2771SD Datasheet HTML 5Page - National Semiconductor (TI) LM2771SD Datasheet HTML 6Page - National Semiconductor (TI) LM2771SD Datasheet HTML 7Page - National Semiconductor (TI) LM2771SD Datasheet HTML 8Page - National Semiconductor (TI) LM2771SD Datasheet HTML 9Page - National Semiconductor (TI) Next Button
Zoom Inzoom in Zoom Outzoom out
 1 / 10 page
background image
LM2771
Low-Ripple 250mA Switched Capacitor Step-Down
DC/DC Converter
General Description
The LM2771 is a switched capacitor step-down regulator
that produces a 1.5V output without the use of an inductor. It
is capable of supplying loads up to 250mA. The LM2771
operates with an input voltage from 2.7V to 5.5V, and re-
quires only 3 low-cost ceramic capacitors.
The LM2771 uses a regulated 0.5x charge pump to give
power conversion efficiencies nearly twice as high as an
LDO. Pre-regulated 1.1MHz fixed-frequency switching re-
sults in very low ripple and noise on both the input and the
output. When output currents are low (<30mA typ.), the part
automatically switches to a low-ripple PFM regulation mode
to maintain high efficiency over the entire load range. At
input voltages below 3.5V (Typ), the charge pump goes into
pass mode, with efficiencies similar to an LDO.
The LM2771 is available in National’s 10-pad Leadless
Leadframe No-Pullback Package (LLP-10).
Features
n
Low-Noise Fixed Frequency Operation
n
1.5V Output Voltage
n
Li-Ion (3.6V) to 1.5V with 81% Efficiency
n
1.7% Output Voltage Accuracy
n
Very Low Output Ripple: 8mV @ 250mA
n
Output Currents up to 250mA
n
2.7V to 5.5V Input Range
n
Shutdown Disconnects Load from V
IN
n
1.1MHz Switching Frequency
n
No Inductors…Small Solution Size
n
Current Limit and Thermal Protection
n
LLP-10 Package (3mm x 3mm x 0.8mm)
Applications
n
DSP, Memory, and Microprocessor Power Supplies
n
Mobile Phones and Pagers
n
Portable Electronic Devices
Typical Application Circuit
20183801
LM2771 Efficiency vs.
Low-Dropout Linear Regulator (LDO) Efficiency
20183813
March 2006
© 2006 National Semiconductor Corporation
DS201838
www.national.com


유사한 부품 번호 - LM2771SD

제조업체부품명데이터시트상세설명
logo
Texas Instruments
LM2771SD/NOPB TI1-LM2771SD/NOPB Datasheet
1Mb / 16P
[Old version datasheet]   Low-Ripple 250mA Switched Capacitor Step-Down DC/DC Converter
LM2771SDX/NOPB TI1-LM2771SDX/NOPB Datasheet
1Mb / 16P
[Old version datasheet]   Low-Ripple 250mA Switched Capacitor Step-Down DC/DC Converter
More results

유사한 설명 - LM2771SD

제조업체부품명데이터시트상세설명
logo
Texas Instruments
LM2771 TI1-LM2771 Datasheet
1Mb / 16P
[Old version datasheet]   Low-Ripple 250mA Switched Capacitor Step-Down DC/DC Converter
logo
National Semiconductor ...
LM2772 NSC-LM2772 Datasheet
1Mb / 12P
   Low-Ripple Switched Capacitor Step-Down Regulator
logo
Texas Instruments
LM2772 TI1-LM2772 Datasheet
2Mb / 16P
[Old version datasheet]   Low-Ripple Switched Capacitor Step-Down Regulator
logo
ams AG
AS1334 AMSCO-AS1334_07 Datasheet
932Kb / 19P
   650mA, Ultra low Ripple Step Down DC/DC Converter
AS1334 AMSCO-AS1334 Datasheet
1Mb / 17P
   650mA, Ultra low Ripple Step Down DC/DC Converter
logo
Texas Instruments
LM2772 TI-LM2772_15 Datasheet
2Mb / 17P
[Old version datasheet]   LM2772 Low-Ripple Switched Capacitor Step-Down Regulator
logo
Linear Technology
LTC1514-5 LINER-LTC1514-5_15 Datasheet
221Kb / 8P
   Step-Up/Step-Down Switched Capacitor DC/DC Converters with Low-Battery Comparator
LTC1514-3.3 LINER-LTC1514-3.3 Datasheet
215Kb / 8P
   Step-Up/Step-Down Switched Capacitor DC/DC Converters with Low-Battery Comparator
LTC1514-3.3 LINER-LTC1514-3.3_15 Datasheet
221Kb / 8P
   Step-Up/Step-Down Switched Capacitor DC/DC Converters with Low-Battery Comparator
logo
Zetex Semiconductors
ZXCP330 ZETEX-ZXCP330 Datasheet
341Kb / 9P
   SWITCHED CAPACITOR DC-DC CONVERTER
More results


Html Pages

1 2 3 4 5 6 7 8 9 10


데이터시트 다운로드

Go To PDF Page


링크 URL




개인정보취급방침
ALLDATASHEET.CO.KR
ALLDATASHEET 가 귀하에 도움이 되셨나요?  [ DONATE ] 

Alldatasheet는?   |   광고문의   |   운영자에게 연락하기   |   개인정보취급방침   |   링크교환   |   제조사별 검색
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