TL1963A-XX Datasheet, PDF (1/26 Pages) Texas Instruments – 1.5-A LOW-NOISE FAST-TRANSIENT-RESPONSE LOW-DROPOUT REGULATOR

TL1963A-xx
www.ti.com ........................................................................................................................................................ SLVS719A – JUNE 2008 – REVISED AUGUST 2008
1.5-A LOW-NOISE FAST-TRANSIENT-RESPONSE LOW-DROPOUT REGULATOR
FEATURES
1
•2 Optimized for Fast Transient Response
• Output Current: 1.5 A
• Dropout Voltage: 340 mV
• Low Noise: 40 µV_RMS (10 Hz to 100 kHz)
• 1-mA Quiescent Current
• 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
• Adjustable Output Voltage: 1.21 V to 20 V
• Less Than 1-µA Quiescent Current in
Shutdown
• Stable with 10-µF Output Capacitor
• Stable with Ceramic Capacitors
• Reverse-Battery Protection
• No Reverse Current
• Thermal Limiting
APPLICATIONS
• 3.3-V to 2.5-V Logic Power Supplies
• Post Regulator for Switching Supplies
KTT PACKAGE
(TOP VIEW)
5
SENSE/ADJ
4
OUT
3
GND
2
IN
1
SHDN
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⁾
T_A
–40°C to 125°C
V_OUT
(TYP)
1.5 V
1.8 V
2.5 V
3.3 V
ADJ
PACKAGE ⁽²⁾
TO-263 (KTT) Reel of 500
ORDERABLE PART NUMBER
TOP-SIDE MARKING
TL1963A-15KTTR
TL1963A-18KTTR
TL1963A-25KTTR
TL1963A-33KTTR
TL1963AKTTR
TL1963A-15
TL1963A-18
TL1963A-25
TL1963A-33
TL1963A
(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.
PowerPAD, PowerFLEX are trademarks of Texas Instruments.
2
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