Datasheet

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

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

TPS7A30xx

www.ti.com

SBVS125A –AUGUST 2010– REVISED MARCH 2011

–

36V, –200mA, Ultralow-Noise, Negative LINEAR REGULATOR

FEATURES

DESCRIPTION

The TPS7A30xx series of devices are negative,

• Input Voltage Range: –3V to –36V

high-voltage (–36V), ultralow-noise (15.1μV

RMS

, 72dB

• Noise:

PSRR) linear regulators capable of sourcing a

– 14μV

RMS

(20Hz to 20kHz)

maximum load of 200mA.

– 15.1μV

RMS

(10Hz to 100kHz)

These linear regulators include a CMOS

• Power-Supply Ripple Rejection:

logic-level-compatible enable pin and

capacitor-programmable soft-start function that allows

– 72dB (120Hz)

for customized power-management schemes. Other

– ≥ 55dB (10Hz to 700kHz)

features available include built-in current limit and

• Adjustable Output: –1.18V to –33V

thermal shutdown protection to safeguard the device

and system during fault conditions.

• Maximum Output Current: 200mA

• Dropout Voltage: 216mV at 100mA

The TPS7A30xx family is designed using bipolar

technology, and is ideal for high-accuracy,

• Stable with Ceramic Capacitors ≥ 2.2μF

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,

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

• Available in High Thermal Performance

converters (DACs), and other high-performance

MSOP-8 PowerPAD™ Package

analog circuitry.

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

In addition, the TPS7A30xx family of linear regulators

is suitable for post dc/dc converter regulation. By

APPLICATIONS

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

measurement, audio, and RF applications.

• Audio

• Post DC/DC Converter Regulation and Ripple

For applications where positive and negative

Filtering

high-performance rails are required, consider TI’s

TPS7A49xx family of positive high-voltage,

• Test and Measurement

ultralow-noise linear regulators.

• RX, TX, and PA Circuitry

• Industrial Instrumention

Typical Application

• Base Stations and Telecom Infrastrucure

• –12V and –24V Industrial Buses

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 (25 pages)

PAGE 1
TPS7A30xx SBVS125A – AUGUST 2010 – REVISED MARCH 2011 www.ti.com –36V, –200mA, Ultralow-Noise, Negative LINEAR REGULATOR FEATURES DESCRIPTION • • The TPS7A30xx series of devices are negative, high-voltage (–36V), ultralow-noise (15.1μVRMS, 72dB PSRR) linear regulators capable of sourcing a maximum load of 200mA. 1 23 • • • • • • • • • Input Voltage Range: –3V to –36V Noise: – 14μVRMS (20Hz to 20kHz) – 15.
PAGE 2
TPS7A30xx SBVS125A – AUGUST 2010 – REVISED MARCH 2011 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
TPS7A30xx SBVS125A – AUGUST 2010 – REVISED MARCH 2011 www.ti.com ELECTRICAL CHARACTERISTICS (1) 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. TPS7A30xx PARAMETER VIN Input voltage range VREF Internal reference TEST CONDITIONS MIN TYP –35.0 (2) TJ = +25°C, VNR/SS = VREF –1.202 |VIN| ≥ |VOUT(NOM)| + 1.0V –1.184 MAX UNIT –3.0 V –1.
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TPS7A30xx SBVS125A – AUGUST 2010 – REVISED MARCH 2011 www.ti.
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TPS7A30xx SBVS125A – AUGUST 2010 – REVISED MARCH 2011 www.ti.com 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 TPS7A30xx 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
TPS7A30xx SBVS125A – AUGUST 2010 – REVISED MARCH 2011 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 100 -1.165 90 80 70 IFB (nA) VFB (V) -1.17 -1.175 +125°C +105°C +85°C +25°C -40°C -1.18 60 50 40 30 20 10 0 -1.
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TPS7A30xx SBVS125A – AUGUST 2010 – REVISED MARCH 2011 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. 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
TPS7A30xx SBVS125A – AUGUST 2010 – REVISED MARCH 2011 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 ON 80 1 70 0.5 60 0 PSRR (dB) VEN (V) 1.5 OFF -0.5 50 40 30 -1 -1.
PAGE 9
TPS7A30xx SBVS125A – AUGUST 2010 – REVISED MARCH 2011 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. Output Spectral Noise Density (mV/ÖHz) OUTPUT SPECTRAL NOISE DENSITY vs OUTPUT CURRENT 10 VOUT = -1.
PAGE 10
TPS7A30xx SBVS125A – AUGUST 2010 – REVISED MARCH 2011 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 VOUT = -1.2V VIN = -3V IOUT = 1mA CIN = COUT = 2.2mF CNR/SS = 0pF VOUT 1V/div 1V/div CAPACITOR-PROGRAMMABLE SOFT START VEN VOUT = -1.
PAGE 11
TPS7A30xx SBVS125A – AUGUST 2010 – REVISED MARCH 2011 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. 50mV/div 200mA/div LOAD TRANSIENT RESPONSE IOUT VOUT VIN = -3.0V IOUT = 1mA to 200mA COUT = 2.2mF Time (100ms/div) Figure 28.
PAGE 12
TPS7A30xx SBVS125A – AUGUST 2010 – REVISED MARCH 2011 www.ti.com THEORY OF OPERATION GENERAL DESCRIPTION The TPS7A30xx 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 13
TPS7A30xx www.ti.com OUTPUT NOISE The TPS7A30xx 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 80% (from 80μVRMS to 17μVRMS); see Figure 20. SBVS125A – AUGUST 2010 – REVISED MARCH 2011 Additionally, ac performance can be maximized by adding a 0.01μF bypass capacitor (CBYP) from the FB pin to the OUT pin.
PAGE 14
TPS7A30xx SBVS125A – AUGUST 2010 – REVISED MARCH 2011 www.ti.com APPLICATION INFORMATION POWER FOR PRECISION ANALOG One of the primary TPS7A30xx applications is to provide ultralow noise voltage rails to high-performance analog circuitry in order to maximize system accuracy and precision.
PAGE 15
TPS7A30xx SBVS125A – AUGUST 2010 – REVISED MARCH 2011 www.ti.com LAYOUT PACKAGE MOUNTING Solder pad footprint recommendations for the TPS7A30xx are available at the end of this product datasheet and at www.ti.com.
PAGE 16
TPS7A30xx SBVS125A – AUGUST 2010 – REVISED MARCH 2011 www.ti.com Figure 32. PCB Layout Example U1 TPS7A30XXDGN 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 33.
PAGE 17
TPS7A30xx SBVS125A – AUGUST 2010 – REVISED MARCH 2011 www.ti.com REVISION HISTORY NOTE: Page numbers for previous revisions may differ from the page numbers in the current version. Changes from Original (August 2010) to Revision A • Page Switched colors for 10mA and 200mA curves in Figure 10 ..................................................................................................
PAGE 18
PACKAGE OPTION ADDENDUM www.ti.
PAGE 19
PACKAGE OPTION ADDENDUM www.ti.com 18-Oct-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 20
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 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 TPS7A3001DGNR MSOPPower PAD DGN 8 2500 330.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 TPS7A3001DGNT MSOPPower PAD DGN 8 250 180.0 12.4 5.3 3.4 1.4 8.0 12.
PAGE 21
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS7A3001DGNR MSOP-PowerPAD DGN 8 2500 367.0 367.0 35.0 TPS7A3001DGNT MSOP-PowerPAD DGN 8 250 210.0 185.0 35.
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