TPS73801 Datasheet, PDF (1/21 Pages) Texas Instruments – 1.0-A LOW-NOISE FAST-TRANSIENT-RESPONSE LOW-DROPOUT REGULATOR

TPS73801
www.ti.com
SLVS915A – FEBRUARY 2010 – REVISED JULY 2012
1.0-A LOW-NOISE FAST-TRANSIENT-RESPONSE LOW-DROPOUT REGULATOR
Check for Samples: TPS73801
FEATURES
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• Optimized for Fast Transient Response
• Output Current: 1.0 A
• Dropout Voltage: 300 mV
• Low Noise: 45 µV_RMS (10 Hz to 100 kHz)
• 1-mA Quiescent Current
• No Protection Diodes Needed
• Controlled Quiescent Current in Dropout
• 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
• Portable/Battery-Powered Equipment.
DCQ PACKAGE
(TOP VIEW)
5
EN
4
FB
6
3 GND
2 OUT
1
IN
DESCRIPTION/ORDERING INFORMATION
The TPS73801 is a low-dropout (LDO) regulator optimized for fast transient response. The device can supply
1.0 A of output current with a dropout voltage of 300 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 TPS73801 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 TPS73801 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 as an adjustable device with a 1.21-V reference voltage.
The TPS73801 regulators are available in the 6-pin TO-223 (DCQ) packages.
T_A
–40°C to 125°C
V_OUT
(TYP)
Adjustable
ORDERING INFORMATION⁽¹⁾
PACKAGE ⁽²⁾
ORDERABLE PART NUMBER
TO-223 – DCQ Reel of 2500 TPS73801DCQR
TOP-SIDE MARKING
PS73801
(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.
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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.
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 © 2010–2012, Texas Instruments Incorporated