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LM3207TLX PDF预览

LM3207TLX

更新时间: 2024-11-20 04:44:31
品牌 Logo 应用领域
美国国家半导体 - NSC 转换器稳压器开关式稳压器或控制器电源电路开关式控制器放大器射频功率放大器
页数 文件大小 规格书
19页 1334K
描述
650mA Miniature, Adjustable, Step-Down DC-DC Converter for RF Power Amplifiers with Integrated Vref LDO

LM3207TLX 技术参数

是否Rohs认证: 符合生命周期:Transferred
包装说明:VFBGA, BGA9,3X3,20Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.2模拟集成电路 - 其他类型:SWITCHING REGULATOR
控制模式:CURRENT-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 VJESD-30 代码:S-XBGA-B9
JESD-609代码:e1长度:1.97 mm
湿度敏感等级:1功能数量:1
端子数量:9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:VFBGA
封装等效代码:BGA9,3X3,20封装形状:SQUARE
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:2300 kHz
温度等级:COMMERCIAL EXTENDED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:40
宽度:1.97 mmBase Number Matches:1

LM3207TLX 数据手册

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August 2006  
LM3207  
650mA Miniature, Adjustable, Step-Down DC-DC  
Converter for RF Power Amplifiers with Integrated Vref  
LDO  
General Description  
Features  
n
2MHz (typ.) PWM Switching Frequency  
The LM3207 is a DC-DC converter optimized for powering  
WCDMA / CDMA RF power amplifiers (PAs) from a single  
Lithium-Ion cell; however they may be used in many other  
applications. It steps down an input voltage from 2.7V to  
n Operates from a single Li-Ion cell (2.7V to 5.5V)  
n Variable Output Voltage (0.8V to 3.6V)  
n 650mA Maximum load capability  
n High Efficiency (95% Typ at 3.9VIN, 3.4VOUT at 400mA)  
from internal synchronous rectification  
n Integrated 2.875V Vref LDO  
5.5V to  
a variable output voltage from 0.8V(typ.) to  
3.6V(typ.). Output voltage is set using a VCON analog input  
for controlling power levels and efficiency of the RF PA.  
The LM3207 also provides a regulated reference voltage(V-  
ref) required by linear RF power amplifiers through an inte-  
grated LDO with a nominal output voltage of 2.875V and  
maximum Iref of 10 mA.  
n Regulated LDO Output up to 10mA max  
n Fast 3uS Vref LDO On/Off Time  
n 9-pin micro SMD Package  
n Current Overload Protection  
n Thermal Overload Protection  
The LM3207 is available in a 9-pin lead free micro SMD  
package. High switching frequency (2MHz) allows use of  
surface-mount components. Only four small external  
surface-mount components are required, an inductor and  
three ceramic capacitors.  
Applications  
n Cellular Phones  
n Hand-Held Radios  
n RF PC Cards  
n Battery Powered RF Devices  
Typical Application  
20165301  
FIGURE 1. LM3207 Typical Application  
© 2006 National Semiconductor Corporation  
DS201653  
www.national.com  

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