Voltage Regulator. TPS7A33 Datasheet

TPS7A33 Regulator. Datasheet pdf. Equivalent

Part TPS7A33
Description Ultralow-Noise Negative Voltage Regulator
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Total Page 30 Pages
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TPS7A33
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TPS7A33
SBVS169D – DECEMBER 2011 – REVISED APRIL 2015
TPS7A33 –36-V, 1-A, Ultralow-Noise Negative Voltage Regulator
1 Features
1 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: –1.18 V to –33 V
• Maximum Output Current: 1 A
• Stable With Ceramic Capacitors 10 μF
• Built-In Current-Limit and Thermal Shutdown
Protection
• Available in an External Heatsink-Capable, High
Thermal Performance TO-220 Package
• Operating Temperature Range:
–40°C to 125°C
2 Applications
• Supply Rails for Operational Amplifiers, DACs,
ADCs, and Other High-Precision Analog Circuitry
• Audio
• Post DC-DC Converter Regulation and Ripple
Filtering
• Test and Measurement
• Medical
• Industrial Instrumentation
• Base Stations and Telecom Infrastructure
• 12-V and 24-V Industrial Buses
3 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.
The TPS7A33 series include a complementary metal
oxide semiconductor (CMOS) logic-level-compatible
enable pin (EN) to allow for user-customizable power
management schemes. Other features available
include built-in current limit and thermal shutdown
features to protect the device and system during fault
conditions.
The TPS7A33 family is designed using bipolar
technology primarily for high-accuracy, high-precision
instrumentation applications, where clean voltage
rails are critical to maximize system performance.
This feature makes it ideal to power operational
amplifiers, analog-to-digital converters (ADCs),
digital-to-analog converters (DACs), and other high-
performance analog circuitry.
In addition, the TPS7A33 family of linear regulators is
suitable for post DC-DC converter regulation. By
filtering out the output voltage ripple inherent to DC-
DC switching conversion, maximum system
performance is ensured in sensitive instrumentation,
medical, test and measurement, audio, and RF
applications.
For applications where positive and negative high-
performance rails are required, consider the
TPS7A4700 positive high-voltage, ultralow-noise, low-
dropout linear regulator as well.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS7A33
TO-220 (7)
VQFN (20)
10.17 mm × 8.38 mm
5.00 mm × 5.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application Schematic
TPS7A47xx
RF LDO
Amplifier
TPS7A33
Negative-Voltage
Regulator
1
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.



TPS7A33
TPS7A33
SBVS169D – DECEMBER 2011 – REVISED APRIL 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 ......................... 4
6 Specifications......................................................... 5
6.1 Absolute Maximum Ratings ..................................... 5
6.2 ESD Ratings ............................................................ 5
6.3 Recommended Operating Conditions....................... 5
6.4 Thermal Information .................................................. 5
6.5 Electrical Characteristics........................................... 6
6.6 Typical Characteristics .............................................. 7
7 Detailed Description ............................................ 12
7.1 Overview ................................................................. 12
7.2 Functional Block Diagram ....................................... 12
7.3 Feature Description................................................. 12
7.4 Device Functional Modes........................................ 14
8 Application and Implementation ........................ 15
8.1 Application Information............................................ 15
8.2 Typical Application .................................................. 18
8.3 Do's and Don’ts....................................................... 20
9 Power Supply Recommendations...................... 21
10 Layout................................................................... 21
10.1 Layout Guidelines ................................................. 21
10.2 Layout Example .................................................... 21
10.3 Thermal Performance and Heat Sink Selection.... 24
10.4 Package Mounting ................................................ 25
11 Device and Documentation Support ................. 25
11.1 Device Support...................................................... 25
11.2 Documentation Support ........................................ 25
11.3 Trademarks ........................................................... 25
11.4 Electrostatic Discharge Caution ............................ 25
11.5 Glossary ................................................................ 25
12 Mechanical, Packaging, and Orderable
Information ........................................................... 26
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision C (February 2013) to Revision D
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
• Corrected title of data sheet to show accurate maximum output current; changed "–1 A" to "1-A" ..................................... 1
• Changed front-page figures and deleted note stating that RGW package was product preview........................................... 1
• Changed Pin Configuration and Functions section; updated table format and deleted footnote about RGW product-
preview status......................................................................................................................................................................... 4
• Deleted footnote from Pin Functions table indicating RGW product-preview status.............................................................. 4
• Deleted footnote (2) from Absolute Maximum Ratings table.................................................................................................. 5
• Deleted note from Thermal Information table stating that RGW package was product preview .......................................... 5
• Corrected condition values for Figure 23 ............................................................................................................................... 9
• Corrected condition values for Figure 24 ............................................................................................................................... 9
• Corrected condition values and trace indicators for Figure 25............................................................................................. 10
• Corrected condition values and trace indicators for Figure 26............................................................................................. 10
• Changed CSS value from 1 µF to 10 nF in Figure 27 ........................................................................................................... 10
• Deleted Parametric Measurement Information section ....................................................................................................... 12
• Revised Functional Block Diagram....................................................................................................................................... 12
• Changed first paragraph of Adjustable Operation section stating the device output voltage range .................................... 15
• Changed Equation 2 for clarity ............................................................................................................................................ 15
• Changed last sentence of Capacitor Recommendations section ........................................................................................ 16
• Changed noise reduction capacitor value from 1 µF to 10 nF in first paragraph of Power-Supply Rejection section. ........ 17
• Revised last paragraph of Power-Supply Rejection section................................................................................................. 17
• Changed noise reduction capacitor value from 1 µF to 10 nF in second paragraph of Output Noise section. ................... 17
• Added footnote (1) to Figure 32 ........................................................................................................................................... 18
• Changed title for Figure 41 ................................................................................................................................................... 23
• Changed title for Figure 42 ................................................................................................................................................... 23
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