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TPS79501DRBR Datasheet Preview

TPS79501DRBR Datasheet

Low-Dropout Linear Regulator

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TPS795

SLVS350J – OCTOBER 2002 – REVISED MAY 2019

TPS795 Ultralow-Noise, High-PSRR, Fast, RF, 500-mA, Low-Dropout Linear Regulators

1 Features

•1 500-mA low-dropout regulator with enable

• Available in fixed and adjustable (1.2-V to 5.5-V)

versions

• High PSRR (50 dB at 10 kHz)

• Ultralow noise (33 µVRMS, TPS79530)

• Fast start-up time (50 µs)

• Stable with a 1-µF ceramic capacitor

• Excellent load and line transient response

• Low dropout voltage (110 mV at full load,

TPS79530)

• 6-pin SOT-223 and 3-mm × 3-mm VSON

packages

2 Applications

• RF: VCOs, receivers, ADCs

• Audio

• Bluetooth®, wireless LAN

• Cellular and cordless telephones

• Handheld organizers, PDAs

3 Description

The TPS795 family of low-dropout (LDO), low-power

linear voltage regulators features high power-supply

rejection ratio (PSRR), ultralow noise, fast start-up,

and excellent line and load transient responses in

small outline, 6-pin SOT-223 and 3-mm × 3-mm

VSON packages. Each device in the family is stable

with a small 1-µF ceramic capacitor on the output.

The family uses an advanced, proprietary BiCMOS

fabrication process to yield extremely low dropout

voltages (for example, 110 mV at 500 mA). Each

device achieves fast start-up times (approximately

50 µs with a 0.001-µF bypass capacitor) while

consuming very low quiescent current (265 µA,

typical). Moreover, when the device is placed in

standby mode, the supply current is reduced to less

than 1 µA. The TPS79530 device exhibits

approximately 33 µVRMS of output voltage noise at 3-

V output with a 0.1-µF bypass capacitor. Applications

with analog components that are noise-sensitive,

such as portable RF electronics, benefit from the

high-PSRR and low-noise features, as well as from

the fast response time.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TPS795

SOT-223 (6)

VSON (8)

6.50 mm × 3.50 mm

3.00 mm × 3.00 mm

(1) For all available packages, see the package option addendum

at the end of the data sheet.

TPS79530 Ripple Rejection vs Frequency

VIN = 4 V

70 COUT = 10mF

CNR = 0.01mF

IOUT = 1 mA

IOUT = 500 mA

1 10 100 1 k 10 k 100 k 1 M 10 M

Frequency (Hz)

TPS79530 vs Frequency

0.5

VIN = 5.5 V

COUT = 2.2mF

0.4

CNR = 0.1mF

0.3

IOUT = 1 mA

0.2

IOUT = 0.5 A

0.1

100

10 k

Frequency (Hz)

100 k

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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TPS79501DRBR Datasheet Preview

TPS79501DRBR Datasheet

Low-Dropout Linear Regulator

No Preview Available !

TPS795

SLVS350J – OCTOBER 2002 – REVISED MAY 2019

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......................................................... 3

6.1 Absolute Maximum Ratings ...................................... 3

6.2 ESD Ratings.............................................................. 3

6.3 Recommended Operating Conditions....................... 4

6.4 Thermal Information .................................................. 4

6.5 Electrical Characteristics........................................... 5

6.6 Typical Characteristics .............................................. 6

7 Detailed Description ............................................ 10

7.1 Overview ................................................................. 10

7.2 Functional Block Diagrams ..................................... 10

7.3 Feature Description................................................. 11

7.4 Device Functional Modes........................................ 12

8 Application and Implementation ........................ 13

8.1 Application Information............................................ 13

8.2 Typical Application .................................................. 13

8.3 What to Do and What Not to Do ............................. 15

9 Power Supply Recommendations...................... 16

10 Layout................................................................... 16

10.1 Layout Guidelines ................................................. 16

10.2 Layout Examples................................................... 19

11 Device and Documentation Support ................. 21

11.1 Device Support...................................................... 21

11.2 Documentation Support ........................................ 21

11.3 Receiving Notification of Documentation Updates 21

11.4 Community Resources.......................................... 21

11.5 Trademarks ........................................................... 22

11.6 Electrostatic Discharge Caution ............................ 22

11.7 Glossary ................................................................ 22

12 Mechanical, Packaging, and Orderable

Information ........................................................... 22

4 Revision History

NOTE: Page numbers for previous revisions may differ from page numbers in the current version.

Changes from Revision I (May 2015) to Revision J

Page

• Changed DRB package name throughout data sheet from SON to VSON ........................................................................... 1

• Changed Pin Configuration package names; switched designators to match correct package names (typo) ..................... 3

• Added note (1) to Recommended Operating Conditions; moved from Electrical Characteristics.......................................... 4

• Changed thermal values in Thermal Information table........................................................................................................... 4

• Deleted Input Voltage from Electrical Characteristics; already shown in Recommended Operating Conditions................... 5

• Deleted Junction Temperature from Electrical Characteristics; already shown in Recommended Operating Conditions..... 5

Changes from Revision H (August 2010) to Revision I

Page

• Added ESD Ratings 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

• Changed front-page graphic .................................................................................................................................................. 1

• Changed Pin Configuration and Functions section; updated table format and added pinout drawings................................. 3

• Changed "free-air" to "junction" temperature in condition statement for Absolute Maximum Ratings .................................. 3

• Added Added Operating junction temperature specification to Electrical Characteristics ..................................................... 5

• Deleted Start-up time symbol ................................................................................................................................................. 5

• Corrected min value for IEN(HI) parameter ............................................................................................................................... 5

• Added Thermal shutdown temperature specification to Electrical Characteristics ................................................................ 5

• Added condition statement to Typical Characteristics section .............................................................................................. 6

• Changed title for Thermal Protection section ...................................................................................................................... 16

Changes from Revision G (July, 2006) to Revision H

Page

• Replaced the Dissipation Ratings table with the Thermal Information table .......................................................................... 4

• Updated the Thermal Protection section .............................................................................................................................. 16

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