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TL1963A-15

更新时间： 2024-09-16 03:59:35
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德州仪器 - TI 稳压器
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26页 806K
描述
1.5-A LOW-NOISE FAST-TRANSIENT-RESPONSE LOW-DROPOUT REGULATOR

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TL1963A-xx  
www.ti.com ........................................................................................................................................................ SLVS719A–JUNE 2008–REVISED AUGUST 2008  
1.5-A LOW-NOISE FAST-TRANSIENT-RESPONSE LOW-DROPOUT REGULATOR  
1
FEATURES  
2
•
•
•
•
•
•
•
•
Optimized for Fast Transient Response  
•
•
•
Reverse-Battery Protection  
No Reverse Current  
Thermal Limiting  
Output Current: 1.5 A  
Dropout Voltage: 340 mV  
Low Noise: 40 µVRMS (10 Hz to 100 kHz)  
1-mA Quiescent Current  
APPLICATIONS  
•
•
3.3-V to 2.5-V Logic Power Supplies  
Post Regulator for Switching Supplies  
No Protection Diodes Needed  
Controlled Quiescent Current in Dropout  
Fixed Output Voltages: 1.5 V, 1.8 V, 2.5 V,  
and 3.3 V  
KTT PACKAGE  
(TOP VIEW)  
•
•
Adjustable Output Voltage: 1.21 V to 20 V  
SENSE/ADJ  
OUT  
5
4
3
2
1
Less Than 1-µA Quiescent Current in  
Shutdown  
GND  
IN  
•
•
Stable with 10-µF Output Capacitor  
SHDN  
Stable with Ceramic Capacitors  
DESCRIPTION/ORDERING INFORMATION  
The TL1963A-xx is a low-dropout (LDO) regulator optimized for fast transient response. The device can supply  
1.5 A of output current with a dropout voltage of 340 mV. Operating quiescent current is 1 mA, dropping to less  
than 1 µA in shutdown. Quiescent current is well controlled; it does not rise in dropout as it does with many other  
regulators. In addition to fast transient response, the TL1963A-xx regulators have very low output noise, which  
makes them ideal for sensitive RF supply applications.  
Output voltage range is from 1.21 V to 20 V. The TL1963A-xx regulators are stable with output capacitors as low  
as 10 µF. Small ceramic capacitors can be used without the necessary addition of ESR, as is common with other  
regulators. Internal protection circuitry includes reverse-battery protection, current limiting, thermal limiting, and  
reverse-current protection. The devices are available in fixed output voltages of 1.5 V, 1.8 V, 2.5 V, and 3.3 V,  
and as an adjustable device with a 1.21-V reference voltage. The TL1963A-xx regulators are available in the  
5-pin TO-263 (KTT) package.  
ORDERING INFORMATION(1)  
VOUT  
TA  
PACKAGE(2)  
ORDERABLE PART NUMBER  
TOP-SIDE MARKING  
TL1963A-15  
(TYP)  
1.5 V  
1.8 V  
2.5 V  
3.3 V  
ADJ  
TL1963A-15KTTR  
TL1963A-18KTTR  
TL1963A-25KTTR  
TL1963A-33KTTR  
TL1963AKTTR  
TL1963A-18  
TL1963A-25  
TL1963A-33  
TL1963A  
–40°C to 125°C  
TO-263 (KTT)  
Reel of 500  
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI  
web site at www.ti.com.  
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.  
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
PowerPAD, PowerFLEX are trademarks of Texas Instruments.  
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 © 2008, Texas Instruments Incorporated  
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