Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - LDO voltage regulator Positivbe, adjustable MSOP 8 PowerPad

TPS7A49

+18V

OUT

EN GND

-18V

TPS7A30

IN OUT

EN GND

EVM

+15V

-15V

GND

OUT

NR/SS

DNC

DGNPACKAGE

3mm 5mmMSOP-8PowerPAD

(TOPVIEW)

TPS7A49xx

www.ti.com

SBVS121C –AUGUST 2010–REVISED DECEMBER 2013

+36V, +150mA, Ultralow-Noise, Positive Linear Regulator

FEATURES

DESCRIPTION

The TPS7A49xx series of devices are positive, high-

• Input Voltage Range: +3V to +36V

voltage (+36V), ultralow noise (15.4μV

RMS

, 72dB

• Noise:

PSRR) linear regulators capable of sourcing a load of

– 12.7μV

RMS

(20Hz to 20kHz)

150mA.

– 15.4μV

RMS

(10Hz to 100kHz)

These linear regulators include a CMOS logic-level-

• Power-Supply Ripple Rejection:

compatible enable pin and capacitor-programmable

soft-start function that allows for customized power-

– 72dB (120Hz)

management schemes. Other features available

– ≥ 52dB (10Hz to 400kHz)

include built-in current limit and thermal shutdown

• Adjustable Output: +1.194V to +33V

protection to safeguard the device and system during

fault conditions.

• Output Current: 150mA

• Dropout Voltage: 260mV at 100mA

The TPS7A49xx family is designed using bipolar

technology, and is ideal for high-accuracy, high-

• Stable with Ceramic Capacitors ≥ 2.2μF

precision instrumentation applications where clean

• CMOS Logic-Level-Compatible Enable Pin

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, analog-to-

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

• Available in High Thermal Performance

(DACs), and other high-performance analog circuitry.

MSOP-8 PowerPAD™ Package

In addition, the TPS7A49xx family of linear regulators

• Operating Temperature Range:

is suitable for post dc/dc converter regulation. By

–40°C to +125°C

filtering out the output voltage ripple inherent to dc/dc

switching conversion, maximum system performance

APPLICATIONS

is provided in sensitive instrumentation, test and

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

measurement, audio, and RF applications.

Other High-Precision Analog Circuitry

For applications where both positive and negative

• Audio

high-performance rails are required, consider TI’s

TPS7A30xx family of negative high-voltage, ultralow-

• Post DC/DC Converter Regulation and Ripple

noise linear regulators as well.

Filtering

• Test and Measurement

Figure 1. Typical Application

• RX, TX, and PA Circuitry

• Industrial Instrumentation

• Base Stations and Telecom Infrastructure

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.

Summary of content (24 pages)

PAGE 1
TPS7A49xx www.ti.com SBVS121C – AUGUST 2010 – REVISED DECEMBER 2013 +36V, +150mA, Ultralow-Noise, Positive Linear Regulator FEATURES DESCRIPTION • • The TPS7A49xx series of devices are positive, highvoltage (+36V), ultralow noise (15.4μVRMS, 72dB PSRR) linear regulators capable of sourcing a load of 150mA. 1 23 • • • • • • • • • Input Voltage Range: +3V to +36V Noise: – 12.7μVRMS (20Hz to 20kHz) – 15.
PAGE 2
TPS7A49xx SBVS121C – AUGUST 2010 – REVISED DECEMBER 2013 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.
PAGE 3
TPS7A49xx www.ti.com SBVS121C – AUGUST 2010 – REVISED DECEMBER 2013 ELECTRICAL CHARACTERISTICS At TJ = –40°C to +125°C, VIN = VOUT(NOM) + 1.0V or VIN = 3.0V (whichever is greater), VEN = VIN, IOUT = 1mA, CIN = 2.2μF, COUT = 2.2μF, CNR/SS = 0nF, and the FB pin tied to OUT, unless otherwise noted. TPS7A49xx PARAMETER VIN Input voltage range VREF Internal reference TEST CONDITIONS MIN TYP 3.0 TJ = +25°C, VNR/SS = VREF (1) 1.176 1.188 MAX UNIT 35 V 1.212 V VIN ≥ VOUT(NOM) + 1.0V VREF 33.
PAGE 4
TPS7A49xx SBVS121C – AUGUST 2010 – REVISED DECEMBER 2013 www.ti.
PAGE 5
TPS7A49xx www.ti.com SBVS121C – AUGUST 2010 – REVISED DECEMBER 2013 PIN CONFIGURATION DGN PACKAGE MSOP-8 (TOP VIEW) OUT FB NC GND 1 2 3 4 8 7 6 5 IN DNC NR/SS EN PIN DESCRIPTIONS TPS7A49xx NAME NO. OUT 1 Regulator output. A capacitor ≥ 2.2μF must be tied from this pin to ground to assure stability. DESCRIPTION FB 2 This pin is the input to the control-loop error amplifier. It is used to set the output voltage of the device. NC 3 Not internally connected.
PAGE 6
TPS7A49xx SBVS121C – AUGUST 2010 – REVISED DECEMBER 2013 www.ti.com TYPICAL CHARACTERISTICS At TJ = –40°C to +125°C, VIN = VOUT(NOM) + 1.0V or VIN = 3.0V (whichever is greater), VEN = VIN, IOUT = 1mA, CIN = 2.2μF, COUT = 2.2μF, CNR/SS = 0nF, and the FB pin tied to OUT, unless otherwise noted. FEEDBACK VOLTAGE vs INPUT VOLTAGE FEEDBACK CURRENT vs TEMPERATURE 1.205 +125°C +105°C +85°C +25°C -40°C 90 80 70 IFB (nA) 1.2 VFB (V) 100 1.195 60 50 40 30 1.19 20 10 1.
PAGE 7
TPS7A49xx www.ti.com SBVS121C – AUGUST 2010 – REVISED DECEMBER 2013 TYPICAL CHARACTERISTICS (continued) At TJ = –40°C to +125°C, VIN = VOUT(NOM) + 1.0V or VIN = 3.0V (whichever is greater), VEN = VIN, IOUT = 1mA, CIN = 2.2μF, COUT = 2.2μF, CNR/SS = 0nF, and the FB pin tied to OUT, unless otherwise noted. QUIESCENT CURRENT vs INPUT VOLTAGE SHUTDOWN CURRENT vs INPUT VOLTAGE 100 3.5 90 +125°C +105°C +85°C +25°C -40°C 3 80 2.
PAGE 8
TPS7A49xx SBVS121C – AUGUST 2010 – REVISED DECEMBER 2013 www.ti.com TYPICAL CHARACTERISTICS (continued) At TJ = –40°C to +125°C, VIN = VOUT(NOM) + 1.0V or VIN = 3.0V (whichever is greater), VEN = VIN, IOUT = 1mA, CIN = 2.2μF, COUT = 2.2μF, CNR/SS = 0nF, and the FB pin tied to OUT, unless otherwise noted. ENABLE THRESHOLD VOLTAGE vs TEMPERATURE POWER-SUPPLY REJECTION RATIO vs COUT 90 2.5 80 2 COUT = 10mF 70 ON PSRR (dB) VEN (V) 60 1.5 OFF 1 50 40 30 20 0.
PAGE 9
TPS7A49xx www.ti.com SBVS121C – AUGUST 2010 – REVISED DECEMBER 2013 TYPICAL CHARACTERISTICS (continued) At TJ = –40°C to +125°C, VIN = VOUT(NOM) + 1.0V or VIN = 3.0V (whichever is greater), VEN = VIN, IOUT = 1mA, CIN = 2.2μF, COUT = 2.2μF, CNR/SS = 0nF, and the FB pin tied to OUT, unless otherwise noted. Output Spectral Noise Density (mV/ÖHz) OUTPUT SPECTRAL NOISE DENSITY vs OUTPUT CURRENT 10 VOUT = 1.2V VIN = 3V CIN = 2.
PAGE 10
TPS7A49xx SBVS121C – AUGUST 2010 – REVISED DECEMBER 2013 www.ti.com TYPICAL CHARACTERISTICS (continued) At TJ = –40°C to +125°C, VIN = VOUT(NOM) + 1.0V or VIN = 3.0V (whichever is greater), VEN = VIN, IOUT = 1mA, CIN = 2.2μF, COUT = 2.2μF, CNR/SS = 0nF, and the FB pin tied to OUT, unless otherwise noted. CAPACITOR-PROGRAMMABLE SOFT-START CAPACITOR-PROGRAMMABLE SOFT-START VEN VOUT = 1.2V VIN = 3V IOUT = 100mA COUT = 10mF CNR/SS = 0nF Time (50ms/div) Time (5ms/div) Figure 23. Figure 24.
PAGE 11
TPS7A49xx www.ti.com SBVS121C – AUGUST 2010 – REVISED DECEMBER 2013 THEORY OF OPERATION GENERAL DESCRIPTION The TPS7A49xx belongs to a family of new generation linear regulators that use an innovative bipolar process to achieve ultralow-noise and very high PSRR levels at a wide input voltage range. These features, combined with a high thermal performance MSOP-8 with PowerPAD package make this device ideal for high-performance analog applications.
PAGE 12
TPS7A49xx SBVS121C – AUGUST 2010 – REVISED DECEMBER 2013 OUTPUT NOISE The TPS7A49xx provides low output noise when a noise reduction capacitor (CNR/SS) is used. The noise reduction capacitor serves as a filter for the internal reference. By using a 0.01μF noise reduction capacitor, the output noise is reduced by almost 75% (from 69μVRMS to 17μVRMS); see Figure 21. www.ti.com Additionally, ac performance can be maximized by adding a 0.01μF bypass capacitor (CBYP) from the FB pin to the OUT pin.
PAGE 13
TPS7A49xx www.ti.com SBVS121C – AUGUST 2010 – REVISED DECEMBER 2013 APPLICATION INFORMATION POWER FOR PRECISION ANALOG One of the primary TPS7A49xx applications is to provide ultralow-noise voltage rails to highperformance analog circuitry in order to maximize system accuracy and precision.
PAGE 14
TPS7A49xx SBVS121C – AUGUST 2010 – REVISED DECEMBER 2013 www.ti.com LAYOUT PACKAGE MOUNTING Solder pad footprint recommendations for the TPS7A49xx are available at the end of this product datasheet and at www.ti.com.
PAGE 15
TPS7A49xx www.ti.com SBVS121C – AUGUST 2010 – REVISED DECEMBER 2013 Figure 31. PCB Layout Example U1 TPS7A49XXDGN 5 6 C4 7 8 Vin J1 4 GND EN 3 NR/SS NC DNC FB 2 IN PwPd J1 1 OUT C1 J7 GND R1 9 J4 C2 C3 R3 Figure 32.
PAGE 16
TPS7A49xx SBVS121C – AUGUST 2010 – REVISED DECEMBER 2013 www.ti.com REVISION HISTORY NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision B (January 2010) to Revision C • Changed VREF parameter typical specification in Electrical Characteristics table ................................................................ 3 Changes from Revision A (September 2010) to Revision B • Page Page Changed HBM max value from 500V to 1500V ..............
PAGE 17
PACKAGE OPTION ADDENDUM www.ti.
PAGE 18
PACKAGE OPTION ADDENDUM www.ti.com 6-Nov-2013 In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
PAGE 19
PACKAGE MATERIALS INFORMATION www.ti.com 6-Nov-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant TPS7A4901DGNR MSOPPower PAD DGN 8 2500 330.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 TPS7A4901DGNT MSOPPower PAD DGN 8 250 180.0 12.4 5.3 3.4 1.4 8.0 12.
PAGE 20
PACKAGE MATERIALS INFORMATION www.ti.com 6-Nov-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS7A4901DGNR MSOP-PowerPAD DGN 8 2500 367.0 367.0 35.0 TPS7A4901DGNT MSOP-PowerPAD DGN 8 250 210.0 185.0 35.
PAGE 21
PAGE 22
PAGE 23
PAGE 24
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.