PM6680A

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Dual synchronous step down controller with adjustable output voltages plus LDO

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  • PM6680A is a dual step-down controller specifically designed to provide extremely high efficiency conversion, with losses current sensing technique. The constant on-time architecture assures fast load transient response and the embedded voltage feed-forward provides nearly constant switching frequency operation. An embedded integrator control loop compensates the DC voltage error due to the output ripple. Pulse skipping technique increases efficiency at very light load. Moreover a minimum switching frequency of 33kHz is selectable to avoid audio noise issues. The PM6680A provides a selectable switching frequency, allowing three different values of switching frequencies for the two operation of the two switching sections. The output voltages OUT1 and OUT2 can be adjusted from 0.9V to 5V and from 0.9V to 3.3V respectively.

    Key Features

    • Selectable pulse skipping at light loads
    • Latched OVP and UVP
    • 5mW maximum quiescent power
    • Selectable minimum frequency (33kHz) in pulse skip mode
    • Output voltage ripple compensation
    • Independent power good signals
    • Thermal shutdown
    • Soft-start internally fixed at 2ms
    • Valley current sensing
    • 6V to 36V input voltage range
    • 5V LDO delivers 100mA peak current
    • Adjustable output voltages
    • Current sensing using low side MOSFETs RDS(on)
    • Soft output discharge
    • 1.237V ±1% reference voltage available externally

Circuit Diagram

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Part Number
Package
Packing Type
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Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
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PM6680ATR QFN32 5x5 Tape And Reel
Active
1.321 1000 EAR99 PHILIPPINES Check Availability

Distributor availability ofPM6680ATR

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 100 1 Order Now

Distributor reported inventory date: 2020-02-17

Distributor Name

MOUSER

Stock

100

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-02-17

Buy now

PM6680ATR

Package

QFN32 5x5

Packing Type

Tape And Reel

Unit Price (US$)

1.321*

Distributor availability ofPM6680ATR

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 100 1 Order Now

Distributor reported inventory date: 2020-02-17

Distributor Name

MOUSER

Stock

100

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-02-17

Marketing Status

Active

Unit Price (US$)

1.321

Quantity

1000

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

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00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS4929
      Dual synchronous step-down controller with adjustable output voltages plus LDO
      2.2
      1.87 MB
      PDF
      DS4929

      Dual synchronous step-down controller with adjustable output voltages plus LDO

    • Description Version Size Action
      AN2559
      System power supply board for digital solutions
      1.4
      991.95 KB
      PDF
      AN2559

      System power supply board for digital solutions

    • Description Version Size Action
      TN1224
      Mounting instructions for SMD (surface mounting device) packages
      2.2
      1.06 MB
      PDF
      TN1224

      Mounting instructions for SMD (surface mounting device) packages

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
PM6680ATR
Active
QFN32 5x5 Industrial Ecopack2

PM6680ATR

Package:

QFN32 5x5

Material Declaration**:

PDF XML

Marketing Status

Active

Package

QFN32 5x5

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.

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