SLVSBB9F March   2012  – January 2017 TLV62090

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 Enable (EN)
      2. 7.3.2 Softstart (SS) and Hiccup Current Limit During Startup
      3. 7.3.3 Voltage Tracking (SS)
      4. 7.3.4 Short Circuit Protection (Hiccup-Mode)
      5. 7.3.5 Output Discharge Function
      6. 7.3.6 Power Good Output (PG)
      7. 7.3.7 Undervoltage Lockout (UVLO)
      8. 7.3.8 Thermal Shutdown
      9. 7.3.9 Charge Pump (CP, CN)
    4. 7.4 Device Functional Modes
      1. 7.4.1 PWM Operation
      2. 7.4.2 Power Save Mode Operation
      3. 7.4.3 Low Dropout Operation (100% Duty Cycle)
  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 Custom Design with WEBENCH® Tools
        2. 8.2.2.2 Inductor Selection
        3. 8.2.2.3 Input and Output Capacitor Selection
        4. 8.2.2.4 Setting the Output Voltage
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guideline
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Custom Design with WEBENCH® Tools
    2. 11.2 Documentation Support
      1. 11.2.1 Third-Party Products Disclaimer
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Community Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

1 Features

  • 2.5 V to 5.5 V Input Voltage Range
  • DCS-Control™
  • Up To 98% Efficiency
  • Power Save Mode
  • 20 µA Operating Quiescent Current
  • 100% Duty Cycle for Lowest Dropout
  • 1.4 MHz Typical Switching Frequency
  • 0.8 V to VIN Adjustable Output Voltage
  • Output Discharge Function
  • Adjustable Softstart
  • Hiccup Short Circuit Protection
  • Output Voltage Tracking
  • Pin-to-Pin Compatible with TPS62090, TLV62095 and TPS62095
  • For Improved Feature Set, See TPS62090
  • Create a Custom Design using the TLV62090 with the WEBENCH® Power Designer

2 Applications

  • Distributed Power Supplies
  • Notebook, Netbook Computers
  • Hard Disk Drives (HDD)
  • Solid State Drives (SSD)
  • Processor Supply
  • Battery Powered Applications

3 Description

The TLV62090 device is a high frequency synchronous step-down converter optimized for small solution size, high efficiency and suitable for battery powered applications. To maximize efficiency, the converter operates in pulse width modulation (PWM) mode with a nominal switching frequency of 1.4 MHz and it automatically enters power save mode operation at light load currents. When used in distributed power supplies and point of load regulation, the device allows voltage tracking to other voltage rails and tolerates output capacitors ranging from 10 µF up to 150 µF and beyond. Using the DCS-Control topology, the device achieves excellent load transient performance and accurate output voltage regulation.

The output voltage start-up ramp is controlled by the softstart pin, which allows operation as either a standalone power supply or in tracking configurations. Power sequencing is also possible by configuring the enable (EN) and power good (PG) pins. In power save mode, the device operates with typically 20-µA quiescent current. Power save mode is entered automatically and seamlessly, maintaining high efficiency over the entire load current range.

The device is available in a 3 mm x 3 mm 16-pin VQFN (RGT) package.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TLV62090 VQFN (16) 3.00 mm x 3.00 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.

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Typical Application Schematic

TLV62090 typ_app_lvsbb9.gif

Efficiency vs Output Current

TLV62090 G002_SLVSAW2.png