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TPS732XX_08

更新时间： 2024-11-05 04:48:35
品牌 Logo 应用领域
德州仪器 - TI 稳压器
页数 文件大小 规格书
26页 920K
描述
Cap-Free, NMOS, 250mA Low Dropout Regulator with Reverse Current Protection

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TPS732XX_08 数据手册

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TPS732xx  
www.ti.com  
SBVS037L–AUGUST 2003–REVISED AUGUST 2007  
Cap-Free, NMOS, 250mA Low Dropout Regulator  
with Reverse Current Protection  
1
FEATURES  
DESCRIPTION  
2
•
Stable with No Output Capacitor or Any Value  
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.  
or Type of Capacitor  
•
•
•
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  
DRB PACKAGE  
3mmx 3mm SON  
(TOP VIEW)  
DBV PACKAGE  
SOT23  
(TOP VIEW)  
•
Available in Multiple Output Voltage Versions  
–
–
–
Fixed Outputs of 1.20V to 5.0V  
Adjustable Outputs from 1.20V to 5.5V  
Custom Outputs Available  
OUT  
N/C  
1
2
3
4
8
7
6
5
IN  
1
5
IN  
GND  
EN  
OUT  
N/C  
N/C  
EN  
NR/FB  
GND  
2
NR/FB  
3
4
APPLICATIONS  
DCQ PACKAGE  
SOT223  
(TOP VIEW)  
•
•
•
•
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  
TAB IS GND  
6
3
1
2
4
5
Optional  
Optional  
VIN  
VOUT  
IN  
OUT  
TPS732xx  
GND  
IN  
GND  
EN  
OUT NR/FB  
EN  
NR  
Optional  
Typical Application Circuit for Fixed-Voltage Versions  
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
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 © 2003–2007, Texas Instruments Incorporated  
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