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TPS72118

更新时间： 2024-11-22 22:52:51
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德州仪器 - TI 稳压器输入元件
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14页 202K
描述
LOW INPUT VOLTAGE, CAP FREE 150-mA LOW-DROPOUT LINEAR REGULATORS

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TPS72101, TPS72115  
TPS72116, TPS72118  
Actual Size  
(3,00 mm x 3,00 mm)  
www.ti.com  
SLVS352B – DECEMBER 2001 – REVISED MAY 2002  
LOW INPUT VOLTAGE, CAP FREE 150-mA  
LOW-DROPOUT LINEAR REGULATORS  
voltage (150 mV at full load). Therefore, compared to  
FEATURES  
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.  
D
150-mA LDO  
D
Available in 1.5-V, 1.6-V, 1.8-V Fixed-Output  
and Adjustable Versions  
D
D
D
D
D
D
D
Low Input Voltage Requirement  
(Down to 1.8 V)  
Small Output Capacitor, 0.1-µF  
Dropout Voltage Typically 200 mV at 150 mA  
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.  
Less Than 1 µA Quiescent Current in  
Shutdown Mode  
Thermal Protection  
Over Current Limitation  
5-Pin SOT-23 (DBV) Package  
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.  
APPLICATIONS  
D
D
D
D
D
D
D
D
D
Portable Communication Devices  
Battery Powered Equipment  
PCMCIA Cards  
Personal Digital Assistants  
Modems  
DBV PACKAGE  
(TOP VIEW)  
Bar Code Scanners  
Backup Power Supplies  
SMPS Post Regulation  
Internet Audio  
1
5
4
OUT  
IN  
GND  
EN  
2
3
DESCRIPTION  
NC/FB  
The TPS721xx family of LDO regulators is available in  
fixed voltage options that are commonly used to power  
the latest DSP’sandmicrocontrollerswithanadjustable  
option ranging from 1.22 V to 2.5 V. These 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  
TPS72115  
OUT  
1.8 V  
1.5 V  
IN  
EN GND  
0.1 µF  
0.1 µF  
Pleasebe 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 Texas Instruments standard warranty.  
Production processing does not necessarily include testing of all parameters.  
Copyright 2002, Texas Instruments Incorporated  
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