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  • TLV62568 1-A High Efficiency Synchronous Buck Converter in SOT Package

    • SLVSD89B November   2016  – November 2017 TLV62568

      PRODUCTION DATA.  

  • CONTENTS
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  • TLV62568 1-A High Efficiency Synchronous Buck Converter in SOT Package
  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 Power Save Mode
      2. 7.3.2 100% Duty Cycle Low Dropout Operation
      3. 7.3.3 Soft Startup
      4. 7.3.4 Switch Current Limit
      5. 7.3.5 Under Voltage Lockout
      6. 7.3.6 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Enabling/Disabling the Device
      2. 7.4.2 Power Good
  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 Setting the Output Voltage
        3. 8.2.2.3 Output Filter Design
        4. 8.2.2.4 Inductor Selection
        5. 8.2.2.5 Input and Output Capacitor Selection
      3. 8.2.3 Application Performance Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Thermal Considerations
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Third-Party Products Disclaimer
      2. 11.1.2 Custom Design With WEBENCH® Tools
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    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
  13. IMPORTANT NOTICE

Package Options

Mechanical Data (Package|Pins)
  • DDC|6
    • MPDS124I
  • DBV|5
    • MPDS018T
  • DRL|6
    • MPDS159I
Thermal pad, mechanical data (Package|Pins)
Orderable Information
  • slvsd89b_oa
  • slvsd89b_pm
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DATA SHEET

TLV62568 1-A High Efficiency Synchronous Buck Converter in SOT Package

1 Features

  • Up to 95% Efficiency
  • Low RDS(ON) Switches 150 mΩ / 100 mΩ
  • 2.5-V to 5.5-V Input Voltage Range
  • Adjustable Output Voltage from 0.6 V to VIN
  • Power Save Mode for Light Load Efficiency
  • 100% Duty Cycle for Lowest Dropout
  • 35-µA Operating Quiescent Current
  • 1.5-MHz Switching Frequency
  • Power Good Output
  • Over Current Protection
  • Internal Soft Startup
  • Thermal Shutdown Protection
  • Available in SOT Package
  • Pin-to-Pin Compatible with TLV62569
  • Create a Custom Design Using the TLV62568 With the WEBENCH® Power Designer

2 Applications

  • General Purpose POL Supply
  • Network Video Camera
  • Set Top Box
  • Wireless Router

3 Description

The TLV62568 device is a synchronous step-down buck DC-DC converter optimized for high efficiency and compact solution size. The device integrates switches capable of delivering an output current up to 1 A.

At medium to heavy loads, the device operates in pulse width modulation (PWM) mode with 1.5-MHz switching frequency. At light load, the device automatically enters Power Save Mode (PSM) to maintain high efficiency over the entire load current range. In shutdown, the current consumption is reduced to less than 2 μA.

The TLV62568 provides an adjustable output voltage via an external resistor divider. An internal soft start circuit limits the inrush current during startup. Other features like over current protection, thermal shutdown protection and power good are built-in. The device is available in a SOT23 and SOT563 package.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TLV62568 SOT-23 (5) 2.90 mm × 2.80 mm
TLV62568P SOT-23 (6)
TLV62568 SOT563 (6) 1.60 mm x 1.60 mm
TLV62568P SOT563 (6)
  1. For all available packages, see the orderable addendum at the end of the datasheet.

Device Comparison

PART NUMBER FUNCTION PACKAGE MARKING
TLV62568DBV - 14VF
TLV62568PDDC Power Good 9X
TLV62568DRL - 18L
TLV62568PDRL Power Good 18N

SPACER

Simplified Schematic

TLV62568 TLV62568P typ_app_TLV62568P.gif

Efficiency at 5-V Input Voltage

TLV62568 TLV62568P D008_SLVSD89_TLV62568.gif

4 Revision History

Changes from A Revision (April 2017) to B Revision

  • Added WEBENCH links to data sheetGo
  • Changed TLV62568PDDC to production statusGo
  • Added DDC package thermal information.Go
  • Changed 1.2 V From: MIN value To: MAX value for High-level threshold at EN pinGo

Changes from * Revision (November 2016) to A Revision

  • Changed TLV62568DRL and TLV62568PDRL to production status.Go
  • Moved Device Comparison table to page 1 Go
  • Added DRL package thermal information.Go
  • Added startup time of TLV62568DRL, TLV62568PDRL Go
  • Added TLV62568PDRL layout.Go

5 Pin Configuration and Functions

TLV62568 TLV62568P All_Pinout_TLV62568.gif

Pin Functions

PIN NUMBER I/O/PWR DESCRIPTION
NAME SOT23-5 SOT23-6 SOT563-6
EN 1 1 5 I Device enable logic input. Logic high enables the device, logic low disables the device and turns it into shutdown. Do not leave floating.
GND 2 2 2 PWR Ground pin.
SW 3 3 4 PWR Switch pin connected to the internal FET switches and inductor terminal. Connect the inductor of the output filter to this pin.
VIN 4 4 3 PWR Power supply voltage input.
PG - 5 6 O Power good open drain output pin for TLV62568P. The pull-up resistor should not be connected to any voltage higher than 5.5V. If it's not used, leave the pin floating.
FB 5 6 1 I Feedback pin for the internal control loop. Connect this pin to an external feedback divider.
NC - - 6 O No connection pin for TLV62568DRL. The pin can be connected to the output. Or leave it floating.

 
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