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TPS73801 Datasheet Preview

TPS73801 Datasheet

1.0-A Low-Noise Fast-Transient-Response Low-Dropout Regulator

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TPS73801
SLVS915C – FEBRUARY 2010 – REVISED JULY 2015
TPS73801 1.0-A Low-Noise Fast-Transient-Response Low-Dropout Regulator
1 Features
1 Optimized for Fast Transient Response
• Output Current: 1.0 A
• Dropout Voltage: 300 mV
• Low Noise: 45 µVRMS (10 Hz to 100 kHz)
• 1-mA Quiescent Current
• No Protection Diodes Needed
• Controlled Quiescent Current in Dropout
• Adjustable Output Voltage: 1.21 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
2 Applications
• 3.3-V to 2.5-V Logic Power Supplies
• Post Regulator for Switching Supplies
• Portable/Battery-Powered Equipment.
3 Description
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 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.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS73801
SOT-223 (6)
6.50 mm x 3.50 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.




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TPS73801 Datasheet Preview

TPS73801 Datasheet

1.0-A Low-Noise Fast-Transient-Response Low-Dropout Regulator

No Preview Available !

TPS73801
SLVS915C – FEBRUARY 2010 – REVISED JULY 2015
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 4
6.5 Electrical Characteristics........................................... 5
6.6 Typical Characteristics .............................................. 7
7 Detailed Description ............................................ 11
7.1 Overview ................................................................. 11
7.2 Functional Block Diagram ....................................... 11
7.3 Feature Description................................................. 11
7.4 Device Functional Modes........................................ 13
8 Application and Implementation ........................ 14
8.1 Application Information............................................ 14
8.2 Typical Application .................................................. 14
9 Power Supply Recommendations...................... 16
10 Layout................................................................... 16
10.1 Layout Guidelines ................................................. 16
10.2 Layout Example .................................................... 17
10.3 Thermal Considerations ........................................ 17
11 Device and Documentation Support ................. 19
11.1 Community Resources.......................................... 19
11.2 Trademarks ........................................................... 19
11.3 Electrostatic Discharge Caution ............................ 19
11.4 Glossary ................................................................ 19
12 Mechanical, Packaging, and Orderable
Information ........................................................... 19
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision B (October 2014) to Revision C
Page
• Moved storage temperature to the Absolute Maximum Ratings ........................................................................................... 4
• Changed Handling Ratings to ESD Ratings and updated units from kV to V ........................................................................ 4
• Added Community Resources ............................................................................................................................................. 19
Changes from Revision A (July 2012) to Revision B
Page
• Added Handling Rating table, Feature Description section, Device Functional Modes, Application and
Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation
Support section, and Mechanical, Packaging, and Orderable Information section ............................................................... 1
2
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Copyright © 2010–2015, Texas Instruments Incorporated


Part Number TPS73801
Description 1.0-A Low-Noise Fast-Transient-Response Low-Dropout Regulator
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