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ADP3405ARU-REEL PDF预览

ADP3405ARU-REEL

更新时间: 2024-11-26 21:12:43
品牌 Logo 应用领域
亚德诺 - ADI 光电二极管
页数 文件大小 规格书
12页 143K
描述
IC 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO28, 4.40 MM, TSSOP-28, Power Management Circuit

ADP3405ARU-REEL 数据手册

 浏览型号ADP3405ARU-REEL的Datasheet PDF文件第2页浏览型号ADP3405ARU-REEL的Datasheet PDF文件第3页浏览型号ADP3405ARU-REEL的Datasheet PDF文件第4页浏览型号ADP3405ARU-REEL的Datasheet PDF文件第5页浏览型号ADP3405ARU-REEL的Datasheet PDF文件第6页浏览型号ADP3405ARU-REEL的Datasheet PDF文件第7页 
a
GSM Power Management System  
ADP3405  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
Handles all GSM Baseband Power Management  
Functions  
VBAT  
Four LDOs Optimized for Specific GSM Subsystems  
Charges Li-Mn Coin Cell for Real-Time Clock  
Charge Pump and Logic Level Translators for 3 V and 5 V  
GSM SIM Modules  
ADP3405  
DIGITAL  
VCC  
LDO  
Narrow Body 4.4 mm 28-Lead TSSOP Package  
RESET  
APPLICATIONS  
GSM/DCS/PCS Handsets  
TeleMatic Systems  
ICO/Iridium Terminals  
PWRONKEY  
RTC LDO  
VRTC  
ROWX  
POWER-UP  
SEQUENCING  
AND  
PROTECTION  
LOGIC  
XTAL OSC  
LDO  
PWRONIN  
ANALOGON  
RESCAP  
VTCXO  
VCCA  
GENERAL DESCRIPTION  
ANALOG  
LDO  
CHRON  
The ADP3405 is a multifunction power management system IC  
optimized for GSM cell phones. The wide input voltage range of  
3.0 V to 7.0 V makes the ADP3405 ideal for both single cell Li-Ion  
and three cell NiMH designs. The current consumption of the  
ADP3405 has been optimized for maximum battery life, featuring  
a ground current of only 150 µA when the phone is in standby  
(digital LDO, and SIM card supply active). An undervoltage lock-  
out (UVLO) prevents the startup when there is not enough energy  
in the battery. All four integrated LDOs are optimized to power  
one of the critical sub-blocks of the phone. Their novel anyCAP®  
architecture requires only very small output capacitors for stability,  
and the LDOs are insensitive to the capacitors’ equivalent series  
resistance (ESR). This makes them stable with any capacitor,  
including ceramic (MLCC) types for space-restricted applications.  
SIMBAT  
CAP+  
CAP؊  
CHARGE  
VSIM  
PUMP  
SIMPROG  
SIMON  
BUFFER  
REFOUT  
DGND  
REF  
SIMGND  
+
RESETIN  
CLKIN  
LOGIC LEVEL  
TRANSLATION  
AGND  
DATAIO  
CLK RST  
I/O  
A step-up converter is implemented to supply both the SIM  
module and the level translation circuitry to adapt logic signals  
for 3 V and 5 V SIM modules. Sophisticated controls are avail-  
able for power-up during battery charging, keypad interface, and  
charging of an auxiliary backup battery for the real-time clock.  
These allow an easy interface between ADP3405, GSM proces-  
sor, charger, and keypad. Furthermore, a reset circuit and a  
thermal shutdown function have been implemented to support  
reliable system design.  
anyCAP is a registered trademark of Analog Devices, Inc.  
REV. 0  
Information furnished by Analog Devices is believed to be accurate and  
reliable. However, no responsibility is assumed by Analog Devices for its  
use, nor for any infringements of patents or other rights of third parties  
which may result from its use. No license is granted by implication or  
otherwise under any patent or patent rights of Analog Devices.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781/329-4700  
Fax: 781/326-8703  
World Wide Web Site:www.analog.com  
© Analog Devices, Inc., 2001  

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