Voltage Regulator. TPS7A3401 Datasheet

TPS7A3401 Regulator. Datasheet pdf. Equivalent

Part TPS7A3401
Description Low-Noise Negative Voltage Regulator
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TPS7A3401
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TPS7A3401
SBVS163A – JUNE 2011 – REVISED MAY 2015
TPS7A3401 –20-V, –200-mA, Low-Noise Negative Voltage Regulator
1 Features
1 Input Voltage Range: –3 V to –20 V
• Noise:
– 80 μVRMS (10 Hz to 100 kHz)
• Power-Supply Ripple Rejection:
– 50 dB (1 kHz)
27 dB (10 Hz to 1 MHz)
• Adjustable Output:
Approximately –1.18 V to –18 V
• Maximum Output Current: 200 mA
• Dropout Voltage: 500 mV at 100 mA
• Stable With Ceramic Capacitors 2.2 μF
• CMOS Logic-Level-Compatible Enable Pin
• Built-In, Fixed, Current Limit, and Thermal
Shutdown Protection
• Available in High Thermal Performance MSOP-8
PowerPAD™ Package
• Operating Temperature Range: –40°C to 125°C
2 Applications
• Cost-Effective Supply Rails for Op Amps, DACs,
ADCs, and Other High-Precision Analog Circuitry
• Cost-Effective Post DC-DC Converter Regulation
and Ripple Filtering
3 Description
The TPS7A3401 device is a negative, high-voltage
(–20-V), low-noise linear regulator capable of
sourcing a maximum load of 200 mA.
These linear regulators include a CMOS logic-level-
compatible enable pin. Other features available
include built-in current limit and thermal shutdown
protection to safeguard the device and system during
fault conditions.
The TPS7A3401 is designed using bipolar
technology, and is ideal for instrumentation
applications where clean voltage rails are critical for
improving system performance. This design makes it
a cost-effective choice to power operational
amplifiers, analog-to-digital converters (ADCs),
digital-to-analog converters (DACs), and other analog
circuitry.
In addition, the TPS7A3401 linear regulator is
suitable for cost-effective, post DC-DC converter
regulation. By filtering out the output voltage ripple
inherent to DC-DC switching conversion, increased
system performance is provided in instrumentation
applications.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS7A3401
HVSSOP (8)
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Post DC-DC Converter Regulation
+18V
-18V
IN OUT
+15V
TPS7A49
EN GND
IN OUT
-15V
TPS7A34
EN GND
EVM
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.



TPS7A3401
TPS7A3401
SBVS163A – JUNE 2011 – REVISED MAY 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 ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 5
6.5 Electrical Characteristics........................................... 5
6.6 Typical Characteristics .............................................. 7
7 Detailed Description ............................................ 10
7.1 Overview ................................................................. 10
7.2 Functional Block Diagram ....................................... 10
7.3 Feature Description................................................. 10
7.4 Device Functional Modes........................................ 11
8 Application and Implementation ........................ 12
8.1 Application Information............................................ 12
8.2 Typical Application .................................................. 13
8.3 Do's and Don'ts ....................................................... 15
9 Power Supply Recommendations...................... 15
10 Layout................................................................... 16
10.1 Layout Guidelines ................................................. 16
10.2 Layout Example .................................................... 16
10.3 Thermal Considerations ........................................ 17
10.4 Power Dissipation ................................................. 17
11 Device and Documentation Support ................. 19
11.1 Device Support...................................................... 19
11.2 Documentation Support ........................................ 19
11.3 Community Resource............................................ 19
11.4 Trademarks ........................................................... 19
11.5 Electrostatic Discharge Caution ............................ 19
11.6 Glossary ................................................................ 19
12 Mechanical, Packaging, and Orderable
Information ........................................................... 19
4 Revision History
Changes from Original (June 2011) to Revision A
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
• Changed Pin Configuration and Functions section; updated table format ............................................................................ 3
• Changed Thermal Information table; updated values ........................................................................................................... 5
• Changed parametric symbol for current limit from ILIM to ICL ................................................................................................. 5
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