Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - LDO voltage regulator Negative, adjustable VQFN 20 (5x5)

GND OUT

NR/SS

1 2 3 4

KC PACKAGE

TO-220-7

(Top View)

OUT

NR/SS

GND

OUT

GND

INNC

RGW PACKAGE

5-mm 5-mm QFN-20

(Top View)

TPS7A47

+LDO

+18 V

OUT

EN GND

-18 V

TPS7A33

-LDO

IN OUT

EN GND

EVM

+15 V

-15 V

TPS7A33

www.ti.com

SBVS169C –DECEMBER 2011–REVISED FEBRUARY 2013

–36-V, –1-A, Ultralow-Noise Negative Voltage Regulator

FEATURES

DESCRIPTION

The TPS7A33 series of linear regulators are negative

• Input Voltage Range: –3 V to –36 V

voltage (–36 V), ultralow-noise (16 μV

RMS

, 72 dB

• Noise:

PSRR) linear regulators capable of sourcing a

– 16 μV

RMS

(10 Hz to 100 kHz)

maximum load of 1 A.

• Power-Supply Ripple Rejection:

The TPS7A33 series include a complementary metal

– 72 dB (10 kHz)

oxide semiconductor (CMOS) logic-level-compatible

enable pin (EN) to allow for user-customizable power

• Adjustable Output: –1.18 V to –33 V

management schemes. Other features available

• Maximum Output Current: 1 A

include built-in current limit and thermal shutdown

• Stable with Ceramic Capacitors ≥ 10 μF

features to protect the device and system during fault

conditions.

• Built-In Current-Limit and Thermal Shutdown

Protection

The TPS7A33 family is designed using bipolar

technology primarily for high-accuracy, high-precision

• Available in an External Heatsink-Capable,

instrumentation applications, where clean voltage

High Thermal Performance TO-220 Package

rails are critical to maximize system performance.

• Operating Temperature Range:

This feature makes it ideal to power operational

–40°C to +125°C

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

digital-to-analog converters (DACs), and other high-

APPLICATIONS

performance analog circuitry.

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

In addition, the TPS7A33 family of linear regulators is

Other High-Precision Analog Circuitry

suitable for post dc-dc converter regulation. By

filtering out the output voltage ripple inherent to dc-dc

• Audio

switching conversion, maximum system performance

• Post DC/DC Converter Regulation and Ripple

is ensured in sensitive instrumentation, medical, test

Filtering

and measurement, audio, and RF applications.

• Test and Measurement

For applications where positive and negative high-

• Medical

performance rails are required, consider the

• Industrial Instrumentation

TPS7A4700 positive high-voltage, ultra-low noise,

low-dropout linear regulator as well.

• Base Stations and Telecom Infrastructure

• 12-V and 24-V Industrial Buses

NOTE: RGW package is product preview.

Typical Application: Post DC/DC Converter

Regulation for High-Performance 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.

2All 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 (27 pages)

PAGE 1
TPS7A33 www.ti.com SBVS169C – DECEMBER 2011 – REVISED FEBRUARY 2013 –36-V, –1-A, Ultralow-Noise Negative Voltage Regulator FEATURES DESCRIPTION • • The TPS7A33 series of linear regulators are negative voltage (–36 V), ultralow-noise (16 μVRMS, 72 dB PSRR) linear regulators capable of sourcing a maximum load of 1 A. 1 2 • • • • • • • Input Voltage Range: –3 V to –36 V Noise: – 16 μVRMS (10 Hz to 100 kHz) Power-Supply Ripple Rejection: – 72 dB (10 kHz) Adjustable Output: –1.
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TPS7A33 SBVS169C – DECEMBER 2011 – REVISED FEBRUARY 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.
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TPS7A33 www.ti.com SBVS169C – DECEMBER 2011 – REVISED FEBRUARY 2013 ELECTRICAL CHARACTERISTICS (1) At –40°C ≤ TJ ≤ +125°C, |VIN| = |VOUT(NOM)| + 1.0 V or |VIN| = 3.0 V (whichever is greater), VEN = VIN, IOUT = 1 mA, CIN = 10 μF, COUT = 10 μF, CNR/SS = 0 nF, and FB tied to OUT, unless otherwise noted. TPS7A33 PARAMETER VIN Input voltage range VREF Internal reference VUVLO Under-voltage lockout threshold TEST CONDITIONS TJ = +25°C, VFB = VREF |VIN| ≥ |VOUT(NOM)| + 1.
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TPS7A33 SBVS169C – DECEMBER 2011 – REVISED FEBRUARY 2013 www.ti.com PARAMETRIC MEASUREMENT INFORMATION TYPICAL APPLICATION CIRCUIT VIN OUT IN CIN 10 mF CNR/SS 1 mF EN TPS7A3301 NR/SS CFF 10 nF FB GND VOUT = -15 V R1 1.
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TPS7A33 www.ti.
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TPS7A33 SBVS169C – DECEMBER 2011 – REVISED FEBRUARY 2013 www.ti.com TYPICAL CHARACTERISTICS At TJ = –40°C to +125°C, |VIN| = |VOUT(NOM)| + 1.0 V or |VIN| = 3.0 V (whichever is greater), VEN = VIN, IOUT = 1 mA, CIN = 22 μF, COUT = 22 μF, CNR/SS = 0 nF, and the FB pin tied to OUT, unless otherwise noted. FEEDBACK VOLTAGE vs INPUT VOLTAGE FEEDBACK CURRENT vs TEMPERATURE −1.167 100 90 80 −1.172 IFB (nA) VFB (V) 70 −1.177 60 50 40 30 −1.182 − 40°C + 0°C + 25°C −1.
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TPS7A33 www.ti.com SBVS169C – DECEMBER 2011 – REVISED FEBRUARY 2013 TYPICAL CHARACTERISTICS (continued) At TJ = –40°C to +125°C, |VIN| = |VOUT(NOM)| + 1.0 V or |VIN| = 3.0 V (whichever is greater), VEN = VIN, IOUT = 1 mA, CIN = 22 μF, COUT = 22 μF, CNR/SS = 0 nF, and the FB pin tied to OUT, unless otherwise noted.
PAGE 8
TPS7A33 SBVS169C – DECEMBER 2011 – REVISED FEBRUARY 2013 www.ti.com TYPICAL CHARACTERISTICS (continued) At TJ = –40°C to +125°C, |VIN| = |VOUT(NOM)| + 1.0 V or |VIN| = 3.0 V (whichever is greater), VEN = VIN, IOUT = 1 mA, CIN = 22 μF, COUT = 22 μF, CNR/SS = 0 nF, and the FB pin tied to OUT, unless otherwise noted.
PAGE 9
TPS7A33 www.ti.com SBVS169C – DECEMBER 2011 – REVISED FEBRUARY 2013 TYPICAL CHARACTERISTICS (continued) At TJ = –40°C to +125°C, |VIN| = |VOUT(NOM)| + 1.0 V or |VIN| = 3.0 V (whichever is greater), VEN = VIN, IOUT = 1 mA, CIN = 22 μF, COUT = 22 μF, CNR/SS = 0 nF, and the FB pin tied to OUT, unless otherwise noted. OUTPUT SPECTRAL NOISE DENSITY vs OUTPUT CURRENT POWER-SUPPLY REJECTION RATIO vs VDO 10 110 VDO = 1V VDO = 750mV VDO = 500mV 100 90 IOUT = 1mA, VNOISE = 16.26µVRMS IOUT = 1A, VNOISE = 16.
PAGE 10
TPS7A33 SBVS169C – DECEMBER 2011 – REVISED FEBRUARY 2013 www.ti.com TYPICAL CHARACTERISTICS (continued) At TJ = –40°C to +125°C, |VIN| = |VOUT(NOM)| + 1.0 V or |VIN| = 3.0 V (whichever is greater), VEN = VIN, IOUT = 1 mA, CIN = 22 μF, COUT = 22 μF, CNR/SS = 0 nF, and the FB pin tied to OUT, unless otherwise noted.
PAGE 11
TPS7A33 www.ti.com SBVS169C – DECEMBER 2011 – REVISED FEBRUARY 2013 THEORY OF OPERATION GENERAL DESCRIPTION The TPS7A33 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 and current range. These features, combined with the external heatsink-capable, high thermal performance TO-220 package, make this device ideal for high-performance analog applications.
PAGE 12
TPS7A33 SBVS169C – DECEMBER 2011 – REVISED FEBRUARY 2013 www.ti.com ENABLE PIN OPERATION The TPS7A33 provides a dual-polarity enable pin (EN) that turns on the regulator when |VEN| > 2.0 V, whether the voltage is positive or negative, as shown in Figure 29.
PAGE 13
TPS7A33 www.ti.com SBVS169C – DECEMBER 2011 – REVISED FEBRUARY 2013 OUTPUT NOISE The TPS7A33 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 1-μF noise reduction capacitor, the output noise is reduced by almost 80% (from 80 μVRMS to 17 μVRMS); see Figure 21. The TPS7A33 low output voltage noise makes it an ideal solution for powering noise-sensitive circuitry.
PAGE 14
TPS7A33 SBVS169C – DECEMBER 2011 – REVISED FEBRUARY 2013 www.ti.com APPLICATION INFORMATION POWER FOR PRECISION ANALOG One of the primary TPS7A33 applications is to provide ultralow-noise voltage rails to high-performance analog circuitry in order to maximize system accuracy and precision.
PAGE 15
TPS7A33 www.ti.com SBVS169C – DECEMBER 2011 – REVISED FEBRUARY 2013 LAYOUT POWER DISSIPATION The primary TPS7A33 application is to provide ultralow noise voltage rails to high-performance analog circuitry in order to maximize system accuracy and precision. The high-current and high-voltage characteristics of this regulator means that, often enough, high power (heat) is dissipated from the device itself.
PAGE 16
TPS7A33 SBVS169C – DECEMBER 2011 – REVISED FEBRUARY 2013 www.ti.com THERMAL PROTECTION Thermal protection disables the output when the junction temperature rises to approximately +170°C, allowing the device to cool. When the junction temperature cools to approximately +150°C, the output circuitry is enabled. Depending on power dissipation, thermal resistance, and ambient temperature, the thermal protection circuit may cycle on and off.
PAGE 17
TPS7A33 www.ti.com SBVS169C – DECEMBER 2011 – REVISED FEBRUARY 2013 Figure 32. PCB Layout Example: Bottom Layer Figure 33.
PAGE 18
TPS7A33 SBVS169C – DECEMBER 2011 – REVISED FEBRUARY 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 (March 2012) to Revision C Page • Changed product status from Mixed Status to Production Data .......................................................................................... 1 • Added last paragraph in Description section ....................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 5-Feb-2014 continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
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PACKAGE MATERIALS INFORMATION www.ti.com 11-Aug-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 TPS7A3301RGWR VQFN RGW 20 3000 330.0 12.4 5.3 5.3 1.5 8.0 12.0 Q2 TPS7A3301RGWT VQFN RGW 20 250 180.0 12.4 5.3 5.3 1.5 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 11-Aug-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS7A3301RGWR VQFN RGW 20 3000 367.0 367.0 35.0 TPS7A3301RGWT VQFN RGW 20 250 210.0 185.0 35.
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MECHANICAL DATA MSOT010 – OCTOBER 1994 KC (R-PSFM-T7) PLASTIC FLANGE-MOUNT PACKAGE 0.156 (3,96) 0.146 (3,71) 0.420 (10,67) 0.380 (9,65) DIA 0.113 (2,87) 0.103 (2,62) 0.185 (4,70) 0.175 (4,46) 0.055 (1,40) 0.045 (1,14) 0.147 (3,73) 0.137 (3,48) 0.335 (8,51) 0.325 (8,25) 1.020 (25,91) 1.000 (25,40) 1 7 0.125 (3,18) (see Note C) 0.030 (0,76) 0.026 (0,66) 0.010 (0,25) M 0.050 (1,27) 0.300 (7,62) 0.122 (3,10) 0.102 (2,59) 0.025 (0,64) 0.012 (0,30) 4040251 / B 01/95 NOTES: A. B. C. D. E.
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