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

X  

LM3670MFX-1.5 数据表(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
部件名 LM3670MFX-1.5
功能描述  Miniature Step-Down DC-DC Converter for Ultra Low Voltage Circuits
Download  17 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  NSC [National Semiconductor (TI)]
网页  http://www.national.com
标志 NSC - National Semiconductor (TI)

LM3670MFX-1.5 数据表(HTML) 1 Page - National Semiconductor (TI)

  LM3670MFX-1.5 Datasheet HTML 1Page - National Semiconductor (TI) LM3670MFX-1.5 Datasheet HTML 2Page - National Semiconductor (TI) LM3670MFX-1.5 Datasheet HTML 3Page - National Semiconductor (TI) LM3670MFX-1.5 Datasheet HTML 4Page - National Semiconductor (TI) LM3670MFX-1.5 Datasheet HTML 5Page - National Semiconductor (TI) LM3670MFX-1.5 Datasheet HTML 6Page - National Semiconductor (TI) LM3670MFX-1.5 Datasheet HTML 7Page - National Semiconductor (TI) LM3670MFX-1.5 Datasheet HTML 8Page - National Semiconductor (TI) LM3670MFX-1.5 Datasheet HTML 9Page - National Semiconductor (TI) Next Button
Zoom Inzoom in Zoom Outzoom out
 1 / 17 page
background image
LM3670
Miniature Step-Down DC-DC Converter for Ultra Low
Voltage Circuits
General Description
The LM3670 step-down DC-DC converter is optimized for
powering ultra-low voltage circuits from a single Li-Ion cell or
3 cell NiMH/NiCd batteries. It provides up to 350 mA load
current, over an input voltage range from 2.5V to 5.5V. There
are several different fixed voltage output options available as
well as an adjustable output voltage version (see ordering
information).
The device offers superior features and performance for
mobile phones and similar portable applications with com-
plex power management systems. Automatic intelligent
switching between PWM low-noise and PFM low-current
mode offers improved system control. During full-power op-
eration, a fixed-frequency 1 MHz (typ). PWM mode drives
loads from
∼70 mA to 350 mA max, with up to 95% efficiency.
Hysteretic PFM mode extends the battery life through reduc-
tion of the quiescent current to 15 µA (typ) during light
current loads and system standby. Internal synchronous rec-
tification provides high efficiency (90 to 95% typ. at loads
between 1 mA and 100 mA). In shutdown mode (Enable pin
pulled low) the device turns off and reduces battery con-
sumption to 0.1 µA (typ.).
The LM3670 is available in a SOT23-5 package. A high
switching frequency - 1 MHz (typ) - allows use of tiny
surface-mount components. Only three external surface-
mount components, an inductor and two ceramic capacitors,
are required.
Features
n
V
OUT = Adj (0.7V min), 1.2, 1.5, 1.6, 1.8, 1.875, 2.5,
3.3V
n
2.5V
≤ V
IN
≤ 5.5V
n
15 µA typical quiescent current
n
350 mA maximum load capability
n
1 MHz PWM fixed switching frequency (typ.)
n
Automatic PFM/PWM mode switching
n
Available in fixed output voltages as well as an
adjustable version
n
SOT23-5 package
n
Low drop out operation - 100% duty cycle mode
n
Internal synchronous rectification for high efficiency
n
Internal soft start
n
0.1 µA typical shutdown current
n
Operates from a single Li-Ion cell or 3 cell NiMH/NiCd
batteries
n
Only three tiny surface-mount external components
required (one inductor, two ceramic capacitors)
n
Current overload protection
Applications
n
Mobile phones
n
HandHeld
n
PDAs
n
Palm-top PCs
n
Portable Instruments
n
Battery Powered Devices
Typical Application
20075801
FIGURE 1. Fixed Output Voltage - Typical Application Circuit
January 2006
© 2006 National Semiconductor Corporation
DS200758
www.national.com


类似零件编号 - LM3670MFX-1.5

制造商部件名数据表功能描述
logo
National Semiconductor ...
LM3670MFX-1.5 NSC-LM3670MFX-1.5 Datasheet
997Kb / 17P
   Miniature Step-Down DC-DC Converter for Ultra Low Voltage Circuits
logo
Texas Instruments
LM3670MFX-1.5 TI-LM3670MFX-1.5 Datasheet
1Mb / 25P
[Old version datasheet]   LM3670 Miniature Step-Down DC-DC Converter for Ultra Low Voltage Circuits
LM3670MFX-1.5/NOPB TI1-LM3670MFX-1.5/NOPB Datasheet
1Mb / 25P
[Old version datasheet]   LM3670 Miniature Step-Down DC-DC Converter for Ultra Low Voltage Circuits
More results

类似说明 - LM3670MFX-1.5

制造商部件名数据表功能描述
logo
National Semiconductor ...
LM3670 NSC-LM3670 Datasheet
997Kb / 17P
   Miniature Step-Down DC-DC Converter for Ultra Low Voltage Circuits
logo
Texas Instruments
LM3670 TI1-LM3670_14 Datasheet
1Mb / 24P
[Old version datasheet]   Miniature Step-Down DC-DC Converter for Ultra Low Voltage Circuits
LM3670 TI-LM3670_15 Datasheet
1Mb / 25P
[Old version datasheet]   LM3670 Miniature Step-Down DC-DC Converter for Ultra Low Voltage Circuits
LM3670MF-18 TI-LM3670MF-18 Datasheet
1Mb / 25P
[Old version datasheet]   LM3670 Miniature Step-Down DC-DC Converter for Ultra Low Voltage Circuits
LM3670MF-18 TI1-LM3670MF-18 Datasheet
1Mb / 25P
[Old version datasheet]   LM3670 Miniature Step-Down DC-DC Converter for Ultra Low Voltage Circuits
LM3677 TI1-LM3677 Datasheet
11Mb / 30P
[Old version datasheet]   3MHz, 600mA Miniature Step-Down DC-DC Converter for Ultra Low Voltage Circuits
LM3677 TI-LM3677_15 Datasheet
11Mb / 28P
[Old version datasheet]   3MHz, 600mA Miniature Step-Down DC-DC Converter for Ultra Low Voltage Circuits
logo
National Semiconductor ...
LM3677_0810 NSC-LM3677_0810 Datasheet
7Mb / 24P
   3MHz, 600mA Miniature Step-Down DC-DC Converter for Ultra Low Voltage Circuits
LM3677 NSC-LM3677_08 Datasheet
7Mb / 22P
   3MHz, 600mA Miniature Step-Down DC-DC Converter for Ultra Low Voltage Circuits
LM2612BL NSC-LM2612BL Datasheet
2Mb / 19P
   400mA Sub-miniature, Programmable, Step-Down DC-DC Converter for Ultra Low-Voltage Circuits
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17


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