Single-phase PWM controller with light-load efficiency optimization

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  • The L6739 is a single-phase step-down controller with integrated high current drivers that provides complete control logic and protection to realize a DC-DC converter.

    The device flexibility allows to manage conversions with power input VINas low as 1.5 V and the device supply voltage ranging from 5 V to 12 V bus.
    The L6739 device features a proprietary algorithm that allows light-load efficiency optimization, boosting efficiency without compromising the output voltage ripple.
    The integrated 0.8 V reference allows generation of output voltages with ± 0.5% accuracy over line and temperature variations.
    The oscillator is programmable up to 600 kHz.
    The L6739 provides a programmable overcurrent protection and overvoltage protection. The current information is monitored across the inductor DCR.
    The L6739 device is available in a VFQFPN 16 - 3 x 3 mm package.

    Key Features

    • Flexible power supply from 5 V to 12 V bus
    • Power conversion input as low as 1.5 V
    • Light-load efficiency optimization
    • Embedded bootstrap switch
    • VIN detector
    • 0.8 V internal reference
    • 0.5% output voltage accuracy
    • Remote GND recovery
    • High current integrated drivers
    • Sensorless and programmable precise-OC sense across inductor DCR
    • OV protection
    • Overtemperature protection
    • Programmable oscillator up to 600 kHz
    • LS-less to manage pre-bias startup
    • Adjustable output voltage
    • Disable function
    • Internal soft-start
    • VFQFPN 16 - 3 x 3 mm package

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Part Number
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Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
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L6739TR VFQFPN 16 3x3x1.0 Tape And Reel
Active
- - EAR99 PHILIPPINES Check Availability

Distributor availability ofL6739TR

Distributor Name
Region Stock Min. Order Third party link
Farnell Element14 EUROPE 4000 1 Order Now

Distributor reported inventory date: 2019-05-22

Distributor Name

Farnell Element14

Stock

4000

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-05-22

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L6739TR

Package

VFQFPN 16 3x3x1.0

Packing Type

Tape And Reel

Unit Price (US$)

*

Distributor availability ofL6739TR

Distributor Name
Region Stock Min. Order Third party link
Farnell Element14 EUROPE 4000 1 Order Now

Distributor reported inventory date: 2019-05-22

Distributor Name

Farnell Element14

Stock

4000

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-05-22

Marketing Status

Active

Unit Price (US$)

-

Quantity

-

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Related Applications

Computers and Peripherals

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DB2253
      Single-phase PWM controller with light-load efficiency optimization
      1.0
      135.24 KB
      PDF
      DS10351
      Single-phase PWM controller with light-load efficiency optimization
      1.0
      743.53 KB
      PDF
      DB2253

      Single-phase PWM controller with light-load efficiency optimization

      DS10351

      Single-phase PWM controller with light-load efficiency optimization

Publications and Collaterals

    • Description Version Size Action
      Brochure Power management guide 10.2018
      4.42 MB
      PDF

      Brochure Power management guide

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L6739TR
Active
VFQFPN 16 3x3x1.0 Industrial Ecopack2

L6739TR

Package:

VFQFPN 16 3x3x1.0

Material Declaration**:

PDF XML

Marketing Status

Active

Package

VFQFPN 16 3x3x1.0

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.