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LM3673TLX-1.2 PDF预览

LM3673TLX-1.2

更新时间: 2024-11-15 03:51:47
品牌 Logo 应用领域
美国国家半导体 - NSC 转换器
页数 文件大小 规格书
20页 7104K
描述
2MHz, 350mA Step-Down DC-DC Converter

LM3673TLX-1.2 技术参数

是否Rohs认证: 符合生命周期:Transferred
包装说明:VFBGA, BGA5,2X3,20Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.15其他特性:PULSE FREQUENCY MODULATION TECHNIQUE IS ALSO POSSIBLE
模拟集成电路 - 其他类型:SWITCHING REGULATOR控制模式:VOLTAGE-MODE
控制技术:PULSE WIDTH MODULATION最大输入电压:5.5 V
最小输入电压:2.7 V标称输入电压:3.6 V
JESD-30 代码:R-XBGA-B5JESD-609代码:e1
长度:1.387 mm湿度敏感等级:1
功能数量:1端子数量:5
最高工作温度:85 °C最低工作温度:-30 °C
最大输出电流:0.855 A封装主体材料:UNSPECIFIED
封装代码:VFBGA封装等效代码:BGA5,2X3,20
封装形状:RECTANGULAR封装形式:GRID ARRAY, VERY THIN PROFILE, FINE PITCH
峰值回流温度(摄氏度):260认证状态:Not Qualified
座面最大高度:0.675 mm子类别:Switching Regulator or Controllers
表面贴装:YES切换器配置:BUCK
最大切换频率:2600 kHz温度等级:OTHER
端子面层:Tin/Silver/Copper (Sn/Ag/Cu)端子形式:BALL
端子节距:0.5 mm端子位置:BOTTOM
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:1.057 mm
Base Number Matches:1

LM3673TLX-1.2 数据手册

 浏览型号LM3673TLX-1.2的Datasheet PDF文件第2页浏览型号LM3673TLX-1.2的Datasheet PDF文件第3页浏览型号LM3673TLX-1.2的Datasheet PDF文件第4页浏览型号LM3673TLX-1.2的Datasheet PDF文件第5页浏览型号LM3673TLX-1.2的Datasheet PDF文件第6页浏览型号LM3673TLX-1.2的Datasheet PDF文件第7页 
November 2006  
LM3673  
2MHz, 350mA Step-Down DC-DC Converter  
General Description  
Features  
The LM3673 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  
350mA load current, over the entire input voltage range.  
There are several different fixed voltage output options avail-  
able as well as an adjustable output voltage version ranging  
from 1.1V to 3.3V.  
16 µA typical quiescent current  
350 mA maximum load capability  
2 MHz PWM fixed switching frequency (typ)  
Automatic PFM/PWM mode switching  
Available in fixed and adjustable output voltages  
5-bump MicroSMD package  
The device offers superior features and performance for mo-  
bile phones and similar portable systems. The LM3673 uses  
intelligent automatic switching between PWM and PFM for  
better efficiency. During PWM mode, the device operates at  
a fixed-frequency of 2 MHz (typ). Hysteretic PFM mode ex-  
tends the battery life by reducing the quiescent current to 16  
µA (typ) during light load and standby operation. Internal syn-  
chronous rectification provides high efficiency during PWM  
mode operation. In shutdown mode, the device turns off and  
reduces battery consumption to 0.01 µA (typ).  
Internal synchronous rectification for high efficiency  
Internal soft start  
0.01 µA typical shutdown current  
Operates from a single Li-Ion cell battery  
Only three tiny surface-mount external components  
required (one inductor, two ceramic capacitors)  
Current overload and Thermal shutdown protection  
Applications  
The LM3673 is available in a tiny 5-bump MicroSMD package  
in leaded (PB) and lead-free (NO PB) versions. A high switch-  
ing frequency of 2 MHz (typ) allows the use of three tiny  
surface-mount components, an inductor and two ceramic ca-  
pacitors.  
Mobile phones  
PDAs  
MP3 players  
W-LAN  
Portable instruments  
Digital still cameras  
Portable Hard disk drives  
Typical Application Circuits  
20183301  
FIGURE 1. Typical Application Circuit  
© 2006 National Semiconductor Corporation  
201833  
www.national.com  

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