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TPS72116

更新时间： 2024-09-28 04:48:39
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德州仪器 - TI 稳压器输入元件
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13页 351K
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LOW INPUT VOLTAGE, CAP FREE 150-mA LOW-DROPOUT LINEAR REGULATORS

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TPS72101, TPS72115  
TPS72116, TPS72118  
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www.ti.com  
SLVS352C–DECEMBER 2001–REVISED MARCH 2006  
LOW INPUT VOLTAGE, CAP FREE 150-mA  
LOW-DROPOUT LINEAR REGULATORS  
FEATURES  
DESCRIPTION  
•
150-mA LDO  
The TPS721xx family of LDO regulators is available  
in fixed voltage options that are commonly used to  
power the latest DSPs and microcontrollers with an  
adjustable option ranging from 1.22 V to 2.5 V. These  
•
Available in 1.5-V, 1.6-V, 1.8-V Fixed-Output  
and Adjustable (1.2-V to 2.5-V) Versions  
•
Low Input Voltage Requirement (Down to  
1.8 V)  
regulators can be used in  
a wide variety of  
applications ranging from portable, battery-powered  
equipment to PC peripherals. The family features  
operation over a wide range of input voltages (1.8 V  
to 5.5 V) and low dropout voltage (150 mV at full  
load). Therefore, compared to many other regulators  
that require 2.5-V or higher input voltages for  
operation, these regulators can be operated directly  
from two AAA batteries. Also, the typical quiescent  
current (ground pin current) is low, starting at 85 µA  
during normal operation and 1 µA in shutdown mode.  
These regulators can be operated very efficiently and,  
in a battery-powered application, help extend the  
longevity of the device.  
•
•
•
Small Output Capacitor, 0.1-µF  
Dropout Voltage Typically 200 mV at 150 mA  
Less Than 1 µA Quiescent Current in  
Shutdown Mode  
•
•
•
Thermal Protection  
Over Current Limitation  
5-Pin SOT-23 (DBV) Package  
APPLICATIONS  
•
•
•
•
•
•
•
•
•
Portable Communication Devices  
Battery Powered Equipment  
PCMCIA Cards  
Personal Digital Assistants  
Modems  
Bar Code Scanners  
Backup Power Supplies  
SMPS Post Regulation  
Internet Audio  
Similar LDO regulators require 1-µF or larger output  
capacitors for stability. However, this regulator uses  
an internal compensation scheme that stabilizes the  
feedback loop over the full range of input voltages  
and load currents with output capacitances as low as  
0.1-µF. Ceramic capacitors of this size are relatively  
inexpensive and available in small footprints.  
This family of regulators is particularly suited as a  
portable power supply solution due to its minimal  
board space requirement and 1.8-V minimum input  
voltage. Being able to use two off-the-shelf AAA  
batteries makes system design easier and also  
reduces component cost. Moreover, the solution will  
be more efficient than if a regulator with a higher  
input voltage is used.  
DBV PACKAGE  
(TOP VIEW)  
1
2
3
5
OUT  
IN  
GND  
EN  
4
NC/FB  
TPS72115  
OUT  
1.8 V  
1.5 V  
IN  
EN GND  
0.1 µF  
0.1 µF  
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.  
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 © 2001–2006, Texas Instruments Incorporated  
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