Single Phase PWM Controller with Light-Load Efficiency Optimization

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  • The L6738 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 the management of conversions with power input VINas low as 1.5 V and the device supply voltage ranging from 5 V to 12 V bus.
    The L6738 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 the generation of output voltages with ±0.5% accuracy over line and temperature variations.
    The oscillator is programmable up to 600 kHz.
    The L6738 provides a programmable dual-level overcurrent protection and overvoltage protection. The current information is monitored across the inductor DCR.
    The L6738 is available in a VFQFPN 16 3x3 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 diode
    • 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
    • Programmable oscillator up to 600 kHz
    • LS-less to manage pre-bias startup
    • Adjustable output voltage
    • Disable function
    • Internal soft-start
    • VFQFPN 16 3x3 mm package

Circuit Diagram

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L6738TR VFQFPN 16 3x3x1.0 Tape And Reel
Active
- EAR99 PHILIPPINES Check Availability

Distributor availability ofL6738TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3758 1 Order Now
MOUSER WORLDWIDE 3988 1 Order Now

Distributor reported inventory date: 2019-05-20

Distributor Name

DIGIKEY

Stock

3758

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

3988

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-05-20

Buy direct

L6738TR

Package

VFQFPN 16 3x3x1.0

Packing Type

Tape And Reel

Unit Price (US$)

*

Distributor availability ofL6738TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3758 1 Order Now
MOUSER WORLDWIDE 3988 1 Order Now

Distributor reported inventory date: 2019-05-20

Distributor Name

DIGIKEY

Stock

3758

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

3988

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-05-20

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

Evaluation Tools

    • Part Number

      High efficiency DC-DC converter - compact solution based on L6738

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS7008
      Single-phase PWM controller with light-load efficiency optimization
      2.0
      773.4 KB
      PDF
      DS7008

      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**
L6738TR
Active
VFQFPN 16 3x3x1.0 Industrial Ecopack2

L6738TR

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.

eDesignSuite

Converter

Input

V This option is required. And must be less than or equal to Volt. Max [V]
V This option is required. And must be greater than or equal to Volt. Min [V]

Output Power

V This option is required and must be a number.
A This option is required and must be a number.