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参数资料
| 型号： | LM3674MF-2.8 |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 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 |
| 封装： | SOT-23, 5 PIN |
| 文件页数： | 1/15页 |
| 文件大小： | 1102K |
| 代理商： | LM3674MF-2.8 |
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
相关PDF资料 |
PDF描述 |
|---|---|
| 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 |
| LM4132AMF-3.3 | LM4132 SOT-23 Precision Low Dropout Voltage Reference; Package: SOT-23; No of Pins: 5 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM3674MF-ADJ | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| LM3674MF-ADJ/NOPB | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| LM3674MF-ADJEV | 功能描述:电源管理IC开发工具 LM3647 EVAL BOARD RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| LM3674MFX-1.2 | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| LM3674MFX-1.2/NOPB | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
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