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LP3921SQE/NOPB PDF预览

LP3921SQE/NOPB

更新时间： 2024-11-16 11:13:59
品牌 Logo 应用领域
德州仪器 - TI 电池放大器音频放大器电视稳压器
页数 文件大小 规格书
44页 1094K
描述
具有集成 Boomer 音频放大器的电池充电器管理和稳压器单元 | RTV | 32 | -40 to 85

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LP3921SQE/NOPB 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active包装说明：HVQCCN, LCC32,.2SQ,20
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：1 week
风险等级：1.12其他特性：ALSO OPERATES WITH SUPPLY VOLTAGE 4.5 TO 6V
可调阈值：YES模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码：S-PQCC-N32JESD-609代码：e3
长度：5 mm湿度敏感等级：1
信道数量：1功能数量：1
端子数量：32最高工作温度：85 °C
最低工作温度：-40 °C最大输出电压：3.3 V
最小输出电压：1.5 V封装主体材料：PLASTIC/EPOXY
封装代码：HVQCCN封装等效代码：LCC32,.2SQ,20
封装形状：SQUARE封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：260电源：3.6 V
认证状态：Not Qualified座面最大高度：0.8 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标称供电电压 (Vsup)：3.6 V
表面贴装：YES温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn)端子形式：NO LEAD
端子节距：0.5 mm端子位置：QUAD
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：5 mm
Base Number Matches：1

LP3921SQE/NOPB 数据手册

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LP3921  
www.ti.com  
SNVS580A –AUGUST 2008–REVISED MAY 2013  
LP3921 Battery Charger Management and Regulator Unit with Integrated Boomer™ Audio  
Amplifier  
Check for Samples: LP3921  
1
FEATURES  
DESCRIPTION  
The LP3921 is a fully integrated charger and multi-  
regulator unit with a fully differential Boomer audio  
power amplifier designed for CDMA cellular phones.  
The LP3921 has a high-speed serial interface which  
allows for the integration and control of a Li-Ion  
23  
•
Charger  
–
–
–
–
DC Adapter or USB Input  
Thermally Regulated Charge Current  
Under Voltage Lockout  
battery charger,  
7 low-noise low-dropout (LDO)  
50 to 950 mA Programmable Charge  
Current  
voltage regulators and a Boomer audio amplifier.  
The Li-Ion charger integrates a power FET, reverse  
current blocking diode, sense resistor with current  
monitor output, and requires only a few external  
components. Charging is thermally regulated to  
obtain the most efficient charging rate for a given  
ambient temperature.  
•
•
•
3.0V to 5.5V Input Voltage Range  
Thermal Shutdown  
I2C-Compatible Interface for Controlling  
Charger, LDO Outputs and Enabling Audio  
Output  
•
LDO's 7 Low-Noise LDO’s  
LDO regulators provide high PSRR and low noise  
ideally suited for supplying power to both analog and  
digital loads.  
–
–
–
2 x 300 mA  
3 x 150 mA  
2 x 80 mA  
The Boomer Audio Amplifier is capable of delivering  
1.1 watts of continuous average power to an 8Ω BTL  
load with less than 1% distortion (THD+N). Boomer  
Audio Power Amplifiers were designed specifically to  
provide high quality output power with a minimal  
amount of external components. The Boomer Audio  
Amplifier does not require output coupling capacitors  
or bootstrap capacitors, and therefore is ideally suited  
for mobile phone and other low voltage applications  
where minimal power consumption and part count is  
the primary requirement. The Boomer Audio Amplifier  
2% (typ.) Output Voltage Accuracy on LDO's  
•
Audio  
–
–
Fully Differential Amplification  
Ability to Drive Capacitive Loads up to 100  
pF  
–
No Output Coupling Capacitors, Snubber  
Networks or Bootstrap Capacitors Required  
•
Space-Efficient 32-pin 5 x 5 mm WQFN  
Package  
contains advanced pop  
& click circuitry which  
eliminates noises during turn-on and turn-off  
transitions.  
APPLICATIONS  
•
•
•
•
CDMA Phone Handsets  
Low Power Wireless Handsets  
Handheld Information Appliances  
Personal Media Players  
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.  
2
3
Boomer is a trademark of Texas Instruments.  
All other trademarks are the property of their respective owners.  
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 © 2008–2013, Texas Instruments Incorporated  
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