GND

OUT

NR/SS

DNC

DGNPACKAGE

3mm 5mmMSOP-8PowerPAD

(TOPVIEW)

TPS7A49

+18V

OUT

EN GND

-18V

TPS7A30

IN OUT

EN GND

EVM

+15V

-15V

TPS7A49xx

www.ti.com

SBVS121A –AUGUST 2010–REVISED SEPTEMBER 2010

+36V, +150mA, Ultralow-Noise, Positive LINEAR REGULATOR

FEATURES

DESCRIPTION

• Input Voltage Range: +3V to +36V

The TPS7A49xx series of devices are positive,

high-voltage (+36V), ultralow noise (15.4mV

RMS

, 72dB

• Noise:

PSRR) linear regulators capable of sourcing a load of

– 12.7mV

RMS

(20Hz to 20kHz)

150mA.

– 15.4mV

RMS

(10Hz to 100kHz)

These linear regulators include a CMOS

• Power-Supply Ripple Rejection:

logic-level-compatible enable pin and

– 72dB (120Hz)

capacitor-programmable soft-start function that allows

for customized power-management schemes. Other

– ≥ 52dB (10Hz to 400kHz)

features available include built-in current limit and

• Adjustable Output: +1.194V to +33V

thermal shutdown protection to safeguard the device

• Output Current: 150mA

and system during fault conditions.

• Dropout Voltage: 260mV at 100mA

The TPS7A49xx family is designed using bipolar

• Stable with Ceramic Capacitors ≥ 2.2mF

technology, and is ideal for high-accuracy,

high-precision instrumentation applications where

• CMOS Logic-Level-Compatible Enable Pin

clean voltage rails are critical to maximize system

• Built-In, Fixed, Current-Limit and Thermal

performance. This design makes it an excellent

Shutdown Protection

choice to power operational amplifiers,

• Available in High Thermal Performance

analog-to-digital converters (ADCs), digital-to-analog

MSOP-8 PowerPAD™ Package

converters (DACs), and other high-performance

analog circuitry.

• Operating Tempature Range: –40°C to +125°C

In addition, the TPS7A49xx family of linear regulators

APPLICATIONS

is suitable for post dc/dc converter regulation. By

filtering out the output voltage ripple inherent to dc/dc

• Supply Rails for Op Amps, DACs, ADCs, and

switching conversion, maximum system performance

Other High-Precision Analog Circuitry

is provided in sensitive instrumentation, test and

• Audio

measurement, audio, and RF applications.

• Post DC/DC Converter Regulation and Ripple

Filtering

For applications where both positive and negative

high-performance rails are required, consider TI’s

• Test and Measurement

TPS7A30xx family of negative high-voltage,

• RX, TX, and PA Circuitry

ultralow-noise linear regulators as well.

• Industrial Instrumention

• Base Stations and Telecom Infrastrucure

Typical Application

Post DC/DC Converter Regulation for

High-Performace Analog Circuitry

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.

2PowerPAD is a trademark of Texas Instruments.

3All other trademarks are the property of their respective owners.

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.

TPS7A49xx

SBVS121A –AUGUST 2010–REVISED SEPTEMBER 2010

www.ti.com

This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with

appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.

ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more

susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.

ORDERING INFORMATION

(1)

PRODUCT V

OUT

TPS7A49xx yyy z XX is nominal output voltage (01 = Adjustable).

(2)

YYY is package designator.

Z is package quantity.

(1) For the most current package and ordering information see the Package Option Addendum at the end of this document, or visit the

device product folder on www.ti.com.

(2) For fixed -1.2V operation, tie FB to OUT.

ABSOLUTE MAXIMUM RATINGS

(1)

Over operating free-air temperature range (unless otherwise noted).

VALUE

MIN MAX UNIT

IN pin to GND pin –0.3 +36 V

OUT pin to GND pin –0.3 +33 V

OUT pin to IN pin –36 +0.3 V

FB pin to GND pin –0.3 +2 V

Voltage FB pin to IN pin –36 +0.3 V

EN pin to IN pin –36 0.3

EN pin to GND pin –0.3 +36 V

NR/SS pin to IN pin –36 +0.3 V

NR/SS pin to GND pin –0.3 +2 V

Current Peak output Internally limited

Operating virtual junction, T

–40 +125 °C

Temperature

Storage, T

stg

–65 +150 °C

Human body model (HBM) 500 V

Electrostatic discharge rating

Charged device model (CDM) 500 V

(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings

only, and functional operation of the device at these or any other conditions beyond those indicated is not implied. Exposure to

absolute-maximum rated conditions for extended periods may affect device reliability.

THERMAL INFORMATION

TPS7A49xx

THERMAL METRIC

(1)

DGN UNITS

8 PINS

Junction-to-ambient thermal resistance 55.09

JC(top)

Junction-to-case(top) thermal resistance 8.47

Junction-to-board thermal resistance —

°C/W

Junction-to-top characterization parameter 0.36

Junction-to-board characterization parameter 14.6

JC(bottom)

Junction-to-case(bottom) thermal resistance —

(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.

DISSIPATION RATINGS

DERATING FACTOR T

≤ +25°C POWER T

= +70°C POWER T

= +85°C POWER

BOARD PACKAGE R

qJA

qJC

ABOVE T

= +25°C RATING RATING RATING

High-K

(1)

DGN 55.9°C/W 8.47°C/W 16.6mW/°C 1.83W 1.08W 0.833W

(1) The JEDEC High-K (2s2p) board design used to derive this data was a 3-inch x 3-inch multilayer board with 2-ounce internal power and

ground planes and 2-ounce copper traces on top and bottom of the board.

D DV ( V )

OUT IN

OUT(NOM)

D DV ( I )

OUT OUT

OUT(NOM)

TPS7A49xx

www.ti.com

SBVS121A –AUGUST 2010–REVISED SEPTEMBER 2010

ELECTRICAL CHARACTERISTICS

At T

= –40°C to +125°C, V

= V

OUT(NOM)

+ 1.0V or V

= 3.0V (whichever is greater), V

= V

, I

OUT

= 1mA, C

= 2.2mF, C

OUT

= 2.2mF,

NR/SS

= 0nF, and the FB pin tied to OUT, unless otherwise noted.

TPS7A49xx

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

Input voltage range 3.0 35 V

REF

Internal reference T

= +25°C, V

NR/SS

= V

REF

1.176 1.194 1.212 V

Output voltage range

(1)

≥ V

OUT(NOM)

+ 1.0V V

REF

33.0 V

Nominal accuracy T

= +25°C, V

= V

OUT(NOM)

+ 0.5V –1.5 +1.5 %V

OUT

OUT(NOM)

+ 1.0V ≤ V

≤ 35V

Overall accuracy –2.5 +2.5 %V

OUT

1mA ≤ I

OUT

≤ 150mA

Line regulation T

= +25°C, V

OUT(NOM)

+ 1.0V ≤ V

≤ 35V 0.11 %V

OUT

Load regulation T

= +25°C, 1mA ≤ I

OUT

≤ 150mA 0.04 %V

OUT

= 95% V

OUT(NOM)

, I

OUT

= 100mA 260 mV

Dropout voltage

= 95% V

OUT(NOM)

, I

OUT

= 150mA 333 600 mV

LIM

Current limit V

OUT

= 90% V

OUT(NOM)

220 309 500 mA

OUT

= 0mA 61 100 mA

GND

Ground current

OUT

= 100mA 800 mA

SHDN

Shutdown supply current V

= +0.4V 0.8 3.0 mA

Feedback current

(2)

3 100 nA

= V

OUT(NOM)

+ 1.0V 0.02 1.0 mA

Enable current

= V

= +35V 0.2 1.0 mA

EN_HI

Enable high-level voltage +2.1 V

EN_LO

Enable low- level voltage 0 +0.4 V

= +3V, V

OUT(NOM)

= V

REF

, C

OUT

= 10mF,

15.4 mV

RMS

NR/SS

= 10nF, BW = 10Hz to 100kHz

NOISE

Output noise voltage

= +6.2V, V

OUT(NOM)

= +5V, C

OUT

= 10mF,

NR/SS

= C

BYP

(3)

= 10nF, BW = 10Hz to 21.15 mV

RMS

100kHz

= +6.2V, V

OUT(NOM)

= +5V, C

OUT

= 10mF,

PSRR Power-supply rejection ratio 72 dB

NR/SS

= C

BYP

(3)

= 10nF, f = 120Hz

Shutdown, temperature increasing +170 °C

Thermal shutdown temperature

Reset, temperature decreasing +150 °C

Operating junction temperature

–40 +125 °C

range

(1) To ensure stability at no load conditions, a current from the feedback resistive network equal to or greater than 5mA is required.

(2) I

> 0 flows out of the device.

(3) C

BYP

refers to a bypass capacitor connected to the FB and OUT pins.

Part #	TPS7A4901DGNR
Description	LDO Regulator Pos 1.194V to 33V 0.15A 8-Pin HTSSOP EP T/R
Category	IC
Availability	Out of Stock
Qty	0

TPS7A4901DGNR

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