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LP3917RLX-S/NOPB PDF预览

LP3917RLX-S/NOPB

更新时间： 2024-11-15 19:54:39
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
8页 156K
描述
CDMA Cellular Phone Power Management Unit 49-DSBGA

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LP3917RLX-S/NOPB 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Obsolete包装说明：VFBGA, BGA49,7X7,20
Reach Compliance Code：compliantECCN代码：5A991.G
HTS代码：8542.39.00.01风险等级：5.67
可调阈值：YES模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码：S-PBGA-B49长度：3.46 mm
湿度敏感等级：1信道数量：11
功能数量：1端子数量：49
封装主体材料：PLASTIC/EPOXY封装代码：VFBGA
封装等效代码：BGA49,7X7,20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
电源：3.3/5 V认证状态：Not Qualified
座面最大高度：0.725 mm子类别：Power Management Circuits
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：3.46 mm
Base Number Matches：1

LP3917RLX-S/NOPB 数据手册

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LP3917  
www.ti.com  
SNVS425A –DECEMBER 2006–REVISED MARCH 2007  
LP3917 CDMA Cellular Phone Power Management Unit  
Check for Samples: LP3917  
1
FEATURES  
•
•
•
•
•
Thermal Shutdown with Early Warning Alarm  
Very Low Sleep Mode Current  
2
•
Two High Efficiency Synchronous Magnetic  
Buck Regulators, IOUT 800 mA and 600 mA  
Battery Voltage Monitor Output  
–
–
High Efficiency PFM Mode @ Low IOUT  
Auto Mode PFM/PWM Switch  
Interrupt Request for Reducing SW Polling  
Ultra Small 3.5x3.5 mm Micro SMDxt 49 Bump  
Package  
•
•
Low Inductance 2.2 uH @ 2 MHz Clock  
9 Low Noise LDOs  
APPLICATIONS  
–
–
–
3 x 300 mA  
5 x 150 mA  
1 x 80 mA  
•
CDMA Handsets  
Please contact NSC Sales for a full datasheet  
for the device.  
•
•
SW Controllable LDO Outputs  
USB 2.0 Compatible Transceiver (12 Mbps)  
DESCRIPTION  
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 interface to program on/off conditions and output voltages of individual regulators, and to read status  
information of the PMU.  
Buck regulators have an automatic switch to PFM mode at low load conditions allowing very good efficiency also  
at low output currents.  
LDO regulators provide very low noise, 35 uV typ, ideally suited for supplying voltage to RF section.  
Two comparators can be used for detecting external accessories like ear plug etc.  
LP3917 can use interrupt for alerting BB processor of status changes instead of using inefficient status polling.  
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam  
during storage or handling to prevent electrostatic damage to the MOS gates.  
Table 1. Key Specifications  
VALUE  
UNIT  
Input Voltage Range  
3.0–5.5  
V
170 mV typ Dropout Voltage on LDOs @ 300 mA  
2% (typ) Output Voltage accuracy on LDOs  
Noise on LDOs  
35  
µV  
Buck regulators with 3% (typ)  
Accuracy and up to 90% efficiency  
800/600  
mA  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
2
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2006–2007, Texas Instruments Incorporated  
12345678

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