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TPS73225DCQRG4 参数 Datasheet PDF下载

TPS73225DCQRG4图片预览
型号: TPS73225DCQRG4
PDF下载: 下载PDF文件 查看货源
内容描述: 无电容, NMOS , 250毫安低压差稳压器具有反向电流保护 [Cap-Free, NMOS, 250mA Low Dropout Regulator with Reverse Current Protection]
分类和应用: 线性稳压器IC调节器电源电路光电二极管输出元件信息通信管理
文件页数/大小: 23 页 / 679 K
品牌: TI [ TEXAS INSTRUMENTS ]
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TPS732xx  
www.ti.com  
SBVS037IAUGUST 2003REVISED MAY 2006  
Cap-Free, NMOS, 250mA Low Dropout Regulator  
with Reverse Current Protection  
FEATURES  
DESCRIPTION  
Stable with No Output Capacitor or Any Value  
or Type of Capacitor  
The TPS732xx family of low-dropout (LDO) voltage  
regulators uses a new topology: an NMOS pass  
element in a voltage-follower configuration. This  
topology is stable using output capacitors with low  
ESR, and even allows operation without a capacitor.  
It also provides high reverse blockage (low reverse  
current) and ground pin current that is nearly  
constant over all values of output current.  
Input Voltage Range: 1.7V to 5.5V  
Ultralow Dropout Voltage: 40mV Typ at  
250mA  
Excellent Load Transient Response—with or  
without Optional Output Capacitor  
New NMOS Topology Provides Low Reverse  
Leakage Current  
The TPS732xx uses an advanced BiCMOS process  
to yield high precision while delivering very low  
dropout voltages and low ground pin current. Current  
consumption, when not enabled, is under 1µA and  
ideal for portable applications. The extremely low  
output noise (30µVRMS with 0.1µF CNR) is ideal for  
powering VCOs. These devices are protected by  
thermal shutdown and foldback current limit.  
Low Noise: 30µVRMS Typ (10kHz to 100kHz)  
0.5% Initial Accuracy  
1% Overall Accuracy (Line, Load, and  
Temperature)  
Less Than 1µA Max IQ in Shutdown Mode  
Thermal Shutdown and Specified Min/Max  
Current Limit Protection  
DCQ PACKAGE  
SOT223  
(TOP VIEW)  
DBV PACKAGE  
Available in Multiple Output Voltage Versions  
– Fixed Outputs of 1.20V to 5.0V  
SOT23  
(TOP VIEW)  
TAB IS GND  
– Adjustable Outputs from 1.20V to 5.5V  
– Custom Outputs Available  
5
4
IN  
GND  
EN  
1
2
3
OUT  
1
2
3
4
5
NR/FB  
APPLICATIONS  
IN  
GND  
EN  
Portable/Battery-Powered Equipment  
Post-Regulation for Switching Supplies  
Noise-Sensitive Circuitry such as VCOs  
Point of Load Regulation for DSPs, FPGAs,  
ASICs, and Microprocessors  
OUT  
NR/FB  
DRB PACKAGE  
3mm x 3mm SON  
(TOP VIEW)  
OUT  
N/C  
1
2
3
4
8
7
6
5
IN  
Optional  
Optional  
N/C  
N/C  
EN  
VIN  
VOUT  
NR/FB  
GND  
IN  
OUT  
TPS732xx  
GND  
EN  
NR  
Optional  
Typical Application Circuit for Fixed-Voltage Versions  
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.  
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 © 2003–2006, Texas Instruments Incorporated  
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