SBVS169D December   2011  – April 2015 TPS7A33

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Internal Current Limit
      2. 7.3.2 Enable Pin Operation
      3. 7.3.3 Programmable Soft-Start
      4. 7.3.4 Thermal Protection
    4. 7.4 Device Functional Modes
      1. 7.4.1 Normal Operation
      2. 7.4.2 Dropout Operation
      3. 7.4.3 Disabled
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1  Adjustable Operation
      2. 8.1.2  Capacitor Recommendations
      3. 8.1.3  Input and Output Capacitor Requirements
      4. 8.1.4  Noise Reduction and Feed-Forward Capacitor Requirements
      5. 8.1.5  Post DC-DC Converter Filtering
      6. 8.1.6  Audio Applications
      7. 8.1.7  Maximum AC Performance
      8. 8.1.8  Power-Supply Rejection
      9. 8.1.9  Output Noise
      10. 8.1.10 Transient Response
      11. 8.1.11 Power for Precision Analog
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
    3. 8.3 Do's and Don’ts
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 Improve PSRR and Noise Performance
    2. 10.2 Layout Example
    3. 10.3 Thermal Performance and Heat Sink Selection
    4. 10.4 Package Mounting
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Development Support
        1. 11.1.1.1 Evaluation Modules
        2. 11.1.1.2 Spice Models
      2. 11.1.2 Device Nomenclature
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • 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) 10.17 mm × 8.38 mm
VQFN (20) 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

TPS7A33 alt_bvs204.gif