參數(shù)資料
型號(hào)： LM3674MF-1.875
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類(lèi)： 穩(wěn)壓器
英文描述： LM3674 2MHz, 600mA Step-Down DC-DC Converter in SOT 23-5; Package: SOT-23; No of Pins: 5; Qty per Container: 1000; Container: Reel
中文描述： 1.2 A SWITCHING REGULATOR, 2600 kHz SWITCHING FREQ-MAX, PDSO5
封裝： SOT-23, 5 PIN
文件頁(yè)數(shù)： 1/15頁(yè)
文件大小： 1102K
代理商： LM3674MF-1.875
LM3674
2MHz, 600mA Step-Down DC-DC Converter in SOT 23-5
General Description
The LM3674 step-down DC-DC converter is optimized for
powering low voltage circuits from a single Li-Ion cell battery
and input voltage rails from 2.7V to 5.5V. It provides up to
600mA load current, over the entire input voltage range.
There are several fixed output voltages and adjustable out-
put voltage versions.
The device offers superior features and performance for
mobile phones and similar portable systems. During PWM
mode, the device operates at a fixed-frequency of 2 MHz
(typ). Internal synchronous rectification provides high effi-
ciency during PWM mode operation. In shutdown mode, the
device turns off and reduces battery consumption to 0.01 A
(typ).
The LM3674 is available in SOT23-5 in leaded (PB) and
lead-free (NO PB) versions. A high switching frequency of 2
MHz (typ) allows use of only three tiny external surface-
mount components, an inductor and two ceramic capacitors.
Features
n
600mA max load current
n
Input voltage range from 2.7V to 5.5V
n
Available in fixed and adjustable output voltages ranging
from 1.0V to 3.3V
n
Operates from a single Li-Ion cell Battery
n
Internal synchronous rectification for high efficiency
n
Internal soft start
n
0.01 A typical shutdown current
n
2 MHz PWM fixed switching frequency (typ)
n
SOT23-5 package
n
Current overload protection and Thermal shutdown
protection
Applications
n
Mobile phones
n
PDAs
n
MP3 players
n
Portable instruments
n
W-LAN
n
Digital still cameras
n
Portable Hard disk drives
Typical Application
20167201
FIGURE 1. Typical Application Circuit
September 2006
LM3674
2MHz,
600mA
Step-Down
DC-DC
Converter
in
SOT
23-5
2006 National Semiconductor Corporation
DS201672
www.national.com
相關(guān)PDF資料
PDF描述
LM3674MF-2.8 LM3674 2MHz, 600mA Step-Down DC-DC Converter in SOT 23-5; Package: SOT-23; No of Pins: 5; Qty per Container: 1000; Container: Reel
LM3674MFX-2.8 LM3674 2MHz, 600mA Step-Down DC-DC Converter in SOT 23-5; Package: SOT-23; No of Pins: 5; Qty per Container: 3000; Container: Reel
LM4132BMFX-2.5/NOPB LM4132 SOT-23 Precision Low Dropout Voltage Reference; Package: SOT-23; No of Pins: 5; Qty per Container: 3000/Reel
LM4132AMF-1.8 LM4132 SOT-23 Precision Low Dropout Voltage Reference; Package: SOT-23; No of Pins: 5
LM4132AMF-3.0 LM4132 SOT-23 Precision Low Dropout Voltage Reference; Package: SOT-23; No of Pins: 5
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM3674MF-2.8 功能描述:DC/DC 開(kāi)關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
LM3674MF-2.8/NOPB 功能描述:DC/DC 開(kāi)關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
LM3674MF-ADJ 功能描述:DC/DC 開(kāi)關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
LM3674MF-ADJ/NOPB 功能描述:DC/DC 開(kāi)關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
LM3674MF-ADJEV 功能描述:電源管理IC開(kāi)發(fā)工具 LM3647 EVAL BOARD RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類(lèi)型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
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