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TPS7A8001_13

更新时间： 2024-11-23 12:16:19
品牌 Logo 应用领域
德州仪器 - TI 稳压器
页数 文件大小 规格书
25页 1559K
描述
Low-Noise, Wide-Bandwidth, High PSRR, Low-Dropout 1A Linear Regulator

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TPS7A8001_13 数据手册

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TPS7A80xx  
www.ti.com  
SBVS135H –JUNE 2010–REVISED JANUARY 2013  
Low-Noise, Wide-Bandwidth, High PSRR,  
Low-Dropout 1A Linear Regulator  
Check for Samples: TPS7A80xx  
1
FEATURES  
DESCRIPTION  
The TPS7A80xx family of low-dropout linear  
regulators (LDOs) offer very high power-supply ripple  
rejection (PSRR) at the output. This series of LDOs  
2
•
•
Low-Dropout 1A Regulator with Enable  
Available in Multiple Output Versions:  
–
Fixed Output Voltages: 0.8V to 5.0V Using  
Innovative Factory EEPROM Programming  
uses an advanced BiCMOS process and  
a
PMOSFET pass device to achieve very low noise,  
excellent transient response, and excellent PSRR  
performance.  
–
Adjustable Output Voltages: 0.8V to 6.0V  
•
Wide-Bandwidth High PSRR:  
The TPS7A80xx is stable with a 4.7μF ceramic output  
capacitor, and uses a precision voltage reference and  
feedback loop to achieve a worst-case accuracy of  
3% over all load, line, process, and temperature  
variations.  
–
–
–
63dB at 1kHz  
57dB at 100kHz  
38dB at 1MHz  
•
Low Noise: (12.6 × VOUT + 13.5) μVRMS typical  
(100Hz to 100kHz)  
This device is fully specified over the temperature  
range of TJ = –40°C to +125°C and is offered in a  
3mm × 3mm, SON-8 package with a thermal pad.  
•
•
•
•
Stable with a 4.7μF Ceramic Capacitor  
Excellent Load/Line Transient Response  
3% Overall Accuracy (over Load/Line/Temp)  
Typical Application Circuit for Adjustable Voltage Versions  
Optional 1.0mF input capacitor.  
May improve source impedance,  
noise, or PSRR.  
Over-Current and Over-Temperature  
Protection  
•
•
Very Low Dropout: 170mV Typical at 1A  
3mm × 3mm SON-8 DRB Package  
VIN  
VOUT  
IN  
OUT  
TPS7A8001  
R1  
R2  
4.7mF  
Ceramic  
EN  
FB  
GND  
NR  
APPLICATIONS  
•
•
•
Telecom Infrastructure  
Audio  
VEN  
To avoid inrush current,  
it is recommended to  
always connect a  
High-Speed I/F (PLL/VCO)  
1nF to 10nF capacitor  
DRB PACKAGE  
3mm x 3mm SON  
(TOP VIEW)  
TYPICAL POWER-SUPPLY RIPPLE REJECTION  
OUT  
OUT  
1
2
3
4
8
7
6
5
IN  
90  
80  
70  
60  
50  
40  
30  
20  
10  
IN  
FB/SNS  
GND  
NR  
EN  
IOUT = 10mA  
IOUT = 100mA  
IOUT = 750mA  
VDO = 1.0V  
IOUT = 1A  
No CIN  
10  
100  
1k  
10k  
100k  
1M  
10M  
Frequency (Hz)  
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 © 2010–2013, Texas Instruments Incorporated  
 
 
 
 
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