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TPS79650DCQR Datasheet Preview

TPS79650DCQR Datasheet

1-A Low-Dropout Linear Regulator

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TPS79601, TPS79613, TPS79618, TPS79625

TPS79628, TPS79630, TPS79633, TPS79650

SLVS351P – SEPTEMBER 2002 – REVISED MARCH 2015

TPS796xx Ultralow-Noise, High PSRR, Fast, RF, 1-A Low-Dropout Linear Regulators

1 Features

•1 1-A Low-Dropout Regulator With Enable

• Available in Fixed and Adjustable (1.2 V to 5.5 V)

Versions

• High PSRR (53 dB at 10 kHz)

• Ultralow-Noise (40 μVRMS, TPS79630)

• Fast Start-Up Time (50 μs)

• Stable With a 1-μF Ceramic Capacitor

• Excellent Load and Line Transient Response

• Very Low Dropout Voltage (250 mV at Full Load,

TPS79630)

• 3 × 3 VSON PowerPAD™, SOT223-6, and

TO-263 Packages

2 Applications

• RF: VCOs, Receivers, ADCs

• Audio

• Bluetooth®, Wireless LAN

• Cellular and Cordless Telephones

• Handheld Organizers, PDAs

Ripple Rejection vs Frequency

TPS79630

IOUT = 1 mA

VIN = 4 V

COUT = 10 mF

CNR = 0.01 mF

IOUT = 1 A

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

Frequency (Hz)

3 Description

The TPS796 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, 3 × 3 VSON, SOT223-6, and TO-263

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, 250 mV at 1 A). 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

TPS79630 exhibits approximately 40 μVRMS of output

voltage noise at 3.0-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, low noise features, and

need fast response time.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

VSON (8)

3.00 mm × 3.00 mm

TPS796

SOT-223 (6)

6.50 mm × 3.50 mm

TO-263 (5)

10.16 mm × 8.42 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Output Spectral Noise Density vs Frequency

TPS79630

0.7

VIN = 5.5 V

0.6 COUT = 2.2 mF

CNR = 0.1 mF

0.5

0.4

IOUT = 1 A

0.3

0.2

0.1

IOUT = 1.5 A

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.

etcTI

TPS79650DCQR Datasheet Preview

TPS79650DCQR Datasheet

1-A Low-Dropout Linear Regulator

No Preview Available !

TPS79601, TPS79613, TPS79618, TPS79625

TPS79628, TPS79630, TPS79633, TPS79650

SLVS351P – SEPTEMBER 2002 – REVISED MARCH 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 .................................................. 5

6.5 Electrical Characteristics........................................... 6

6.6 Typical Characteristics .............................................. 7

7 Detailed Description ............................................ 11

7.1 Overview ................................................................. 11

7.2 Functional Block Diagrams ..................................... 11

7.3 Feature Description................................................. 12

7.4 Device Functional Modes........................................ 13

8 Application and Implementation ........................ 14

8.1 Application Information............................................ 14

8.2 Typical Application .................................................. 14

8.3 Do's and Don'ts ...................................................... 17

9 Power Supply Recommendations...................... 17

10 Layout................................................................... 17

10.1 Layout Guidelines ................................................. 17

10.2 Layout Examples................................................... 18

10.3 Thermal Considerations ........................................ 19

10.4 Estimating Junction Temperature ........................ 20

11 Device and Documentation Support ................. 22

11.1 Device Support...................................................... 22

11.2 Documentation Support ........................................ 22

11.3 Related Links ........................................................ 22

11.4 Trademarks ........................................................... 23

11.5 Electrostatic Discharge Caution ............................ 23

11.6 Glossary ................................................................ 23

12 Mechanical, Packaging, and Orderable

Information ........................................................... 23

4 Revision History

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

Changes from Revision O (November 2013) to Revision P

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 figure; updated graph style, replaced device pinouts with application circuits ..................................... 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 .................................. 4

• Changed VOUT accuracy for TPS79601, test conditions and specified values ...................................................................... 6

• Deleted Start-up time symbol ................................................................................................................................................. 6

• Added Thermal shutdown temperature specification to Electrical Characteristics ................................................................ 6

• Added Operating junction temperature specification to Electrical Characteristics ................................................................ 6

• Added condition statement to Typical Characteristics ........................................................................................................... 7

Changes from Revision N (January 2011) to Revision O

Page

• Changed Power-Supply Ripple Rejection 3rd test condition from "f = 10 Hz" to "f = 10 kHz" (typo) .................................... 6

• Changed Power-Supply Ripple Rejection 4th test condition from "f = 100 Hz" to "f = 100 kHz" (typo) ................................ 6

Changes from Revision M (October 2010) to Revision N

Page

• Corrected typo in front-page figure......................................................................................................................................... 1

Changes from Revision L (August 2010) to Revision M

Page

• Corrected typo in Figure 32 ................................................................................................................................................. 21

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TPS79650DCQR Datasheet

1-A Low-Dropout Linear Regulator

TPS79650DCQR Datasheet

1-A Low-Dropout Linear Regulator

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