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LM3676SD-ADJ PDF预览

LM3676SD-ADJ

更新时间: 2024-11-15 04:44:23
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 5210K
描述
2MHz, 600mA Step-Down DC-DC Converter with Mode Control

LM3676SD-ADJ 技术参数

是否Rohs认证: 不符合生命周期:Transferred
包装说明:LLP-8Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.17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:2.9 V
标称输入电压:3.6 VJESD-30 代码:R-XDSO-N8
JESD-609代码:e0长度:3 mm
湿度敏感等级:1功能数量:1
端子数量:8最高工作温度:85 °C
最低工作温度:-30 °C最大输出电流:1.2 A
封装主体材料:UNSPECIFIED封装代码:HVSON
封装等效代码:SOLCC8,.11,20封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE认证状态:Not Qualified
座面最大高度:0.8 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/Lead (Sn/Pb)端子形式:NO LEAD
端子节距:0.5 mm端子位置:DUAL
宽度:3 mmBase Number Matches:1

LM3676SD-ADJ 数据手册

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December 2006  
LM3676 2MHz, 600mA Step-Down DC-DC Converter with  
Mode Control  
General Description  
Features  
The LM3676 step-down DC-DC converter is optimized for  
powering low voltage circuits from a single Li-Ion cell battery  
and input voltage rails from 2.9V to 5.5V. It provides up to  
600mA 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.  
16 µA typical quiescent current  
600 mA maximum load capability  
2 MHz PWM fixed switching frequency (typ)  
Automatic PFM/PWM mode switching or Forced PWM  
mode  
Available in fixed output voltages and adjustable version  
The LM3676 has a mode-control pin that allows the user to  
select continuous Forced PWM mode over the complete load  
range or an intelligent PFM-PWM mode that changes modes  
depending on the load. PWM mode offers superior efficiency  
under high load conditions (>100mA) and the lowest output  
noise performance. In Auto mode, PFM-PWM, hysteretic  
PFM extends the battery life through reduction of the quies-  
cent current to 16µA (typ.) during light loads and system  
standby.  
8-Lead non-pullback LLP package  
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  
The LM3676 is available in a 8-lead non-pullback LLP pack-  
age in leaded (PB) and lead-free (NO PB) versions. A high  
switching frequency of 2 MHz (typ) allows use of tiny surface-  
mount components, an inductor and two ceramic capacitors.  
Applications  
Mobile phones  
PDAs  
MP3 players  
W-LAN  
Portable instruments  
Digital still cameras  
Portable Hard disk drives  
Typical Application Circuits  
20176401  
FIGURE 1. Typical Application Circuit  
© 2007 National Semiconductor Corporation  
201764  
www.national.com  

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