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TLV1117LV33 PDF预览

TLV1117LV33

更新时间： 2024-11-24 02:58:47
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德州仪器 - TI /
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20页 698K
描述
1-A, Positive Fixed Voltage, Low-Dropout Regulator

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TLV1117LV33 数据手册

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TLV1117LV Series  
www.ti.com  
SBVS160A –MAY 2011–REVISED SEPTEMBER 2011  
1-A, Positive Fixed Voltage, Low-Dropout Regulator  
1
FEATURES  
DESCRIPTION  
The TLV1117LV series of low-dropout (LDO) linear  
regulators is a low input voltage version of the  
popular 1117 voltage regulator.  
2
•
1.5% Typical Accuracy  
•
Low IQ: 100 μA (max)  
–
500 times lower than standard 1117 devices  
VIN: 2.0 V to 5.5 V  
Absolute maximum VIN = 6.0 V  
The TLV1117LV is an extremely low-power device  
that consumes 500 times lower quiescent current  
than traditional 1117 voltage regulators, making it  
suitable for applications that mandate very low  
standby current. The TLV1117LV family of LDOs is  
also stable with 0 mA of load current; there is no  
minimum load requirement, making it an ideal choice  
for applications where the regulator is required to  
power very small loads during standby in addition to  
large currents on the order of 1 A during normal  
operation. The TLV1117LV offers excellent line and  
load transient performance, resulting in very small  
magnitude undershoots and overshoots of output  
voltage when the load current requirement changes  
from less than 1 mA to more than 500 mA.  
•
–
•
•
•
•
•
Stable with 0-mA Output Current  
Low Dropout: 455 mV at 1 A for VOUT = 3.3 V  
High PSRR: 65 dB at 1 kHz  
Minimum Ensured Current Limit: 1.1 A  
Stable with Cost-Effective Ceramic Capacitors:  
–
With 0-Ω ESR  
•
•
•
Temperature Range: –40°C to +125°C  
Thermal Shutdown and Ovecurrent Protection  
Available in SOT223 Package  
–
See Package Option Addendum at end of  
this document for complete list of available  
voltage options  
A precision bandgap and error amplifier provides  
1.5% accuracy. A very high power-supply rejection  
ratio enables usage of the device for post-regulation  
after a switching regulator. Other valuable features  
include low output noise and low-dropout voltage.  
APPLICATIONS  
•
•
•
•
•
Set Top Boxes  
The device is internally compensated to be stable  
with 0-Ω equivalent series resistance (ESR)  
capacitors. These key advantages enable the use of  
TVs and Monitors  
PC Peripherals, Notebooks, Motherboards  
Modems and Other Communication Products  
Switching Power Supply Post-Regulation  
cost-effective,  
small-size  
ceramic  
capacitors.  
Cost-effective capacitors that have higher bias  
voltages and temperature derating can also be used  
if desired.  
The TLV1117LV series is available in a SOT223  
package.  
TLV1117LVxxDCY  
3
2
1
INPUT  
OUTPUT  
GND  
Figure 1.  
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.  
UNLESS OTHERWISE NOTED this document contains  
PRODUCTION DATA information 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 © 2011, Texas Instruments Incorporated  
 
 
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