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CM3702-50MR PDF预览

CM3702-50MR

更新时间： 2024-02-08 05:35:24
品牌 Logo 应用领域
CALMIRCO 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管泵
页数 文件大小 规格书
11页 445K
描述
Micropower Low-Noise Charge-Pump and Linear Regulator

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中文翻译

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CM3702-50MR 技术参数

是否Rohs认证： 符合生命周期：Obsolete
零件包装代码：SON包装说明：VSSOP, TSSOP10,.19,20
针数：10Reach Compliance Code：unknown
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.84Is Samacsys：N
模拟集成电路 - 其他类型：SWITCHED CAPACITOR REGULATOR最大输入电压：5.5 V
最小输入电压：3 V标称输入电压：5 V
JESD-30 代码：S-XDSO-G10长度：3 mm
湿度敏感等级：1功能数量：1
端子数量：10最高工作温度：85 °C
最低工作温度：-40 °C最大输出电流：0.2 A
标称输出电压：5 V封装主体材料：UNSPECIFIED
封装代码：VSSOP封装等效代码：TSSOP10,.19,20
封装形状：SQUARE封装形式：SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：0.8 mm子类别：Other Analog ICs
表面贴装：YES技术：CMOS
温度等级：INDUSTRIAL端子形式：GULL WING
端子节距：0.5 mm端子位置：DUAL
处于峰值回流温度下的最长时间：40宽度：3 mm
Base Number Matches：1

CM3702-50MR 数据手册

 浏览型号CM3702-50MR的Datasheet PDF文件第2页浏览型号CM3702-50MR的Datasheet PDF文件第3页浏览型号CM3702-50MR的Datasheet PDF文件第4页浏览型号CM3702-50MR的Datasheet PDF文件第5页浏览型号CM3702-50MR的Datasheet PDF文件第6页浏览型号CM3702-50MR的Datasheet PDF文件第7页 
PRELIMINARY  
CM3702  
CALIFORNIA MICRO DEVICES  
Micropower Low-Noise Charge-Pump and Linear Regulator  
Features  
Block Diagram  
•
Low noise regulator with integrated charge  
pump voltage-booster  
•
•
•
•
•
•
5V output with input voltage as low as 2.8V  
Charge pump can also power external LDO  
Low noise in 20Hz to 20kHz audio band  
Up to 200mA continuous output current  
Low operating and shutdown currents  
Stable with low-ESR ceramic or tantalum  
capacitors  
•
•
10-Lead MSOP and TDFN packages  
Lead-free finishing  
Applications  
•
5V analog supply for audio codec in notebook  
computers, PDAs, MP3 players, etc.  
•
3.3V to 5V conversion in PCMCIA cards, PCI  
Express Cards, other applications needing 5V  
Product Description  
The CM3702 low-noise charge pump LDO regulator is designed to provide accurate and “clean” power to a  
subsystem, e.g an audio codec, LED driver, or flash memory. The 5V output provides up to 100mA continuous  
current for input voltages from 2.8V to 5.5V, and up to 200mA for a narrower range. This is accomplished with an  
integrated charge pump that boosts the input voltage before feeding it to an internal LDO linear regulator. The  
charge pump is designed to maintain a nominal 0.8V differential between the input and output of the LDO  
regulator. This allows the LDO regulator to operate with good power supply ripple rejection across the audio band  
while maintaining good power efficiency. The charge pump works with two external capacitors and operates at  
250kHz, well outside the audible frequency band. In addition, separate analog and digital ground pins are  
provided for the charge pump and the rest of the circuitry to eliminate ground noise feed-through from the charge  
pump to the regulated output.  
The CM3702 is fully protected, offering both overload current limiting and high temperature thermal shutdown.  
Two enable inputs provide flexibility in powering down the device. For maximum power saving in shutdown, both  
the charge pump and LDO regulator should be disabled. For applications that require the 5V output to be re-  
established with minimum delay after shutdown, the charge pump can be left enabled while the regulator is  
disabled. This avoids the delay that may otherwise be required for the charge pump to reach full operating  
voltage after being disabled. The CMOS LDO regulator features low quiescent current even at full load, making it  
very suitable for power sensitive applications.  
A bandgap reference bypass pin is provided to further minimize noise by connecting an external capacitor  
between this pin and ground. Another, external, regulator can be connected to the charge pump output pin Cs, if  
required.  
The CM3702 is available in 10-pin MSOP and TDFN packages, both with optional lead-free finishing, and are  
ideal for space critical applications.  
STANDARD PART ORDERING INFORMATION  
Standard Finish  
Lead-free Finish  
Ordering Part  
Ordering Part  
Pins  
10  
Package  
MSOP-10  
TDFN-10  
Number  
Part Marking  
3702 50S  
Number  
Part Marking  
CM3702-50MR  
CM3702-50DF  
CM3702-50MS  
CM3702-50DE  
3702 50  
10  
CM370 250DF  
CM370 250DE  
© 2004 California Micro Devices Corp. All rights reserved.  
9/22/04 430 N. McCarthy Blvd, #100, Milpitas , CA 95035  
Tel: (408) 263-3214  
Fax: (408) 263-7846  
www.calmicro.com  
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