L6739

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Single-phase PWM controller with light-load efficiency optimization

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Product overview

Description

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.
  • All 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

All tools & software

    • Part number
      Status
      Description
      Type
      Supplier

      AP350/SG5000 Automatic Programming System

      Active

      Automatic programmers for STM MCUs series & PMUs

      Hardware Development Tools from Partners System General
      AP350/SG5000 Automatic Programming System

      Description:

      Automatic programmers for STM MCUs series & PMUs

      T9800/SG8000 Device Programmer

      Active

      Universal programmers for STM MCUs series & PMUs

      Hardware Development Tools from Partners System General
      T9800/SG8000 Device Programmer

      Description:

      Universal programmers for STM MCUs series & PMUs

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STMicroelectronics - L6739

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Quality and Reliability

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.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
L6739TR No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tape And Reel VFQFPN 16 3x3x1.0 - - PHILIPPINES

L6739TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

VFQFPN 16 3x3x1.0

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

Country of Origin

PHILIPPINES

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