SLVSDQ3 February   2017 TPS7A4701-EP

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 (ICL)
      2. 7.3.2 Enable (EN) And Under-Voltage Lockout (UVLO)
      3. 7.3.3 Soft-Start and Inrush Current
    4. 7.4 Device Functional Modes
    5. 7.5 Programming
      1. 7.5.1 ANY-OUT Programmable Output Voltage
      2. 7.5.2 Adjustable Operation
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Capacitor Recommendations
          1. 8.2.2.1.1 Input and Output Capacitor Requirements
          2. 8.2.2.1.2 Noise Reduction Capacitor (CNR)
        2. 8.2.2.2 Dropout Voltage (VDO)
        3. 8.2.2.3 Output Voltage Accuracy
        4. 8.2.2.4 Startup
        5. 8.2.2.5 AC Performance
          1. 8.2.2.5.1 Power-Supply Rejection Ratio (PSRR)
          2. 8.2.2.5.2 Load Step Transient Response
          3. 8.2.2.5.3 Noise
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
    1. 9.1 Power Dissipation (PD)
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Thermal Protection
    4. 10.4 Estimating Junction Temperature
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 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
  • Output Voltage Noise:
    4 µVRMS (10 Hz, 100 kHz)
  • Power-Supply Ripple Rejection:
    • 82 dB (100 Hz)
    • ≥ 55 dB (10 Hz, 10 MHz)
  • Two Output Voltage Modes:
    • ANY-OUT™ Version (User-Programmable Output via PCB Layout):
      • No External Feedback Resistors or Feed-Forward Capacitors Required
      • Output Voltage Range: 1.4 V to 20.5 V
    • Adjustable Version:
      • Output Voltage Range: 1.4 V to 34 V
  • Output Current: 1 A
  • Dropout Voltage: 307 mV at 1 A
  • CMOS Logic Level-Compatible Enable Pin
  • Built-In Fixed Current Limit and
    Thermal Shutdown
  • Available in High-Performance Thermal Package: 5-mm × 5-mm QFN
  • Operating Temperature Range:
    –55°C to 125°C
  • Supports Defense, Aerospace, and Medical Applications:
    • Controlled Baseline
    • One Assembly/Test Site
    • One Fabrication Site
    • Available in Extended (–55°C to 125°C) Temperature Range
    • Extended Product Life Cycle
    • Extended Product-Change Notification
    • Product Traceability

    • Simplified Schematic

    TPS7A4701-EP alt_slvsdq3.gif

2 Applications

  • Voltage-Controlled Oscillators (VCO)
  • Frequency Synthesizers
  • Test and Measurement
  • Instrumentation, Medical, and Audio
  • RX, TX, and PA Circuitry
  • Supply Rails for Operational Amplifiers,
    DACs, ADCs, and Other High-Precision Analog Circuitry
  • Post DC-DC Converter Regulation and
    Ripple Filtering
  • Base Stations and Telecom Infrastructure
  • 12-V and 24-V Industrial Buses

3 Description

The TPS7A4701-EP is a positive voltage (36 V), ultra-low-noise (4 µVRMS) low-dropout linear regulators (LDO) capable of sourcing a 1-A load.

The TPS7A4701-EP output voltage can be configured with a user-programmable PCB layout (up to 20.5 V), or adjustable (up to 34 V) with external feedback resistors.

The TPS7A4701-EP is designed with bipolar technology primarily for high-accuracy, high-precision instrumentation applications where clean voltage rails are critical to maximize system performance. This feature makes the device ideal for powering operational amplifiers, analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and other high-performance analog circuitry in critical applications such as medical, radio frequency (RF), and test-and-measurement.

In addition, the TPS7A4701-EP is ideal for post DC-DC converter regulation. By filtering out the output voltage ripple inherent to DC-DC switching conversions, maximum system performance is ensured in sensitive instrumentation, test-and-measurement, audio, and RF applications.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TPS7A4701-EP VQFN (20) 5.00 mm × 5.00 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.

4 Revision History

DATE REVISION NOTES
February 2017 * Initial release.