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LM3677TL-1.5 PDF预览

LM3677TL-1.5

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 8091K
描述
3MHz, 600mA Miniature Step-Down DC-DC Converter for Ultra Low Voltage Circuits

LM3677TL-1.5 技术参数

是否Rohs认证: 符合生命周期:Transferred
包装说明:VFBGA, BGA5,3X3,17/10Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.12其他特性:CURRENT MODE CONTROL IS ALSO POSSIBLE IN PFM CONTROL TECHNIQUE
模拟集成电路 - 其他类型:SWITCHING CONTROLLER控制模式:VOLTAGE-MODE
控制技术:PULSE WIDTH MODULATION最大输入电压: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-PBGA-B5JESD-609代码:e1
长度:1.488 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:1.375 A封装主体材料:PLASTIC/EPOXY
封装代码:VFBGA封装等效代码:BGA5,3X3,17/10
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:3500 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:1.107 mm
Base Number Matches:1

LM3677TL-1.5 数据手册

 浏览型号LM3677TL-1.5的Datasheet PDF文件第2页浏览型号LM3677TL-1.5的Datasheet PDF文件第3页浏览型号LM3677TL-1.5的Datasheet PDF文件第4页浏览型号LM3677TL-1.5的Datasheet PDF文件第5页浏览型号LM3677TL-1.5的Datasheet PDF文件第6页浏览型号LM3677TL-1.5的Datasheet PDF文件第7页 
March 2007  
LM3677  
3MHz, 600mA Miniature Step-Down DC-DC Converter for  
Ultra Low Voltage Circuits  
General Description  
The LM3677 step-down DC-DC converter is optimized for  
powering ultra-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.  
The LM3677 is configured to four output voltages of 1.3V,  
1.5V, 1.8V and 2.5V.  
Features  
16 µA typical quiescent current  
600 mA maximum load capability  
3 MHz PWM fixed switching frequency (typ)  
Automatic PFM/PWM mode switching  
Available in 5-bump micro SMD package  
Internal synchronous rectification for high efficiency  
The device offers superior features and performance for mo-  
bile phones and similar portable applications with complex  
power management systems. Automatic intelligent switching  
between PWM low-noise and PFM low-current mode offers  
improved system control. During PWM mode operation, the  
device operates at a fixed-frequency of 3 MHz (typ). PWM  
mode drives loads from ~ 80mA to 600mA max. Hysteretic  
PFM mode extends the battery life by reducing the quiescent  
current to 16 µA (typ) during light load and standby operation.  
Internal synchronous rectification provides high efficiency. In  
shutdown mode (Enable pin pulled down), the device turns  
off and reduces battery consumption to 0.01 µA (typ).  
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 (solution size less than 20 mm2)  
Current overload and Thermal shutdown protection  
Applications  
Mobile phones  
PDAs  
The LM3677 is available in a lead-free (NO PB) 5-bump micro  
SMD package. A switching frequency of 3 MHz (typ) allows  
use of tiny surface-mount components. Only three external  
surface-mount components, an inductor and two ceramic ca-  
pacitors, are required.  
MP3 players  
W-LAN  
Portable Instruments  
Digital still cameras  
Portable Hard disk drives  
Typical Application Circuit  
Efficiency vs. Output Current  
(VOUT = 1.8V)  
30008401  
FIGURE 1. Typical Application Circuit  
30008487  
© 2007 National Semiconductor Corporation  
300084  
www.national.com  

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