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LP3917RL-NL PDF预览

LP3917RL-NL

更新时间: 2024-11-15 04:08:07
品牌 Logo 应用领域
美国国家半导体 - NSC 电源电路电源管理电路手机
页数 文件大小 规格书
6页 181K
描述
CDMA Cellular Phone Power Management Unit

LP3917RL-NL 技术参数

是否Rohs认证: 符合生命周期:Transferred
包装说明:VFBGA,Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.3Is Samacsys:N
可调阈值:NO模拟集成电路 - 其他类型:POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码:S-PBGA-B49JESD-609代码:e1
长度:3.465 mm湿度敏感等级:1
信道数量:1功能数量:1
端子数量:49封装主体材料:PLASTIC/EPOXY
封装代码:VFBGA封装形状:SQUARE
封装形式:GRID ARRAY, VERY THIN PROFILE, FINE PITCH认证状态:Not Qualified
座面最大高度:0.725 mm最大供电电压 (Vsup):5.5 V
最小供电电压 (Vsup):3 V表面贴装:YES
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
宽度:3.465 mmBase Number Matches:1

LP3917RL-NL 数据手册

 浏览型号LP3917RL-NL的Datasheet PDF文件第2页浏览型号LP3917RL-NL的Datasheet PDF文件第3页浏览型号LP3917RL-NL的Datasheet PDF文件第4页浏览型号LP3917RL-NL的Datasheet PDF文件第5页浏览型号LP3917RL-NL的Datasheet PDF文件第6页 
December 2006  
LP3917  
CDMA Cellular Phone Power Management Unit  
General Description  
Features  
LP3917 is a complete Power Management Unit designed for  
CDMA cellular phones. LP3917 PMU contains 9 low noise low  
dropout voltage regulators, 2 buck regulators, an USB  
Transceiver, two comparators and a high speed serial inter-  
face to program on/off conditions and output voltages of  
individual regulators, and to read status information of the  
PMU.  
Two high efficiency Synchronous Magnetic Buck  
Regulators, IOUT 800 mA and 600 mA  
High efficiency PFM mode @ low IOUT  
Auto Mode PFM/PWM switch  
Low inductance 2.2 uH @ 2 MHz clock  
9 Low Noise LDO's  
3 x 300 mA  
Buck regulators have an automatic switch to PFM mode at  
low load conditions allowing very good efficiency also at low  
output currents.  
5 x 150 mA  
1 x 80 mA  
SW controllable LDO outputs  
LDO regulators provide very low noise, 35 uV typ, ideally suit-  
ed for supplying voltage to RF section.  
USB 2.0 compatible Transceiver (12 Mbps)  
Thermal Shutdown with Early Warning Alarm  
Very low Sleep mode current  
Two comparators can be used for detecting external acces-  
sories like ear plug etc.  
Battery Voltage Monitor output  
LP3917 can use interrupt for alerting BB processor of status  
changes instead of using inefficient status polling.  
Interrupt Request for reducing SW polling  
Ultra small 3.5x3.5 mm Micro SMDxt 49 bump package  
Key Specifications  
Applications  
3.0V to 5.5V Input Voltage Range  
CDMA Handsets  
170 mV typ Dropout Voltage on LDO's @ 300 mA  
2% (typ) Output Voltage accuracy on LDO's  
35 µV noise on LDO's  
Please contact NSC Sales for a full datasheet for the device.  
800/600 mA Buck regulators with 3% (typ)  
Accuracy and up to 90% efficiency  
System Diagram  
20176201  
© 2006 National Semiconductor Corporation  
201762  
www.national.com  

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