PM6680A

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Dual synchronous step down controller with adjustable output voltages plus LDO

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Product overview

Description

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.

  • All 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

EDA Symbols, Footprints and 3D Models

STMicroelectronics - PM6680A

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
PM6680ATR
Active
VFQFPN 32 5x5x1.0 mm Industrial Ecopack2

PM6680ATR

Package:

VFQFPN 32 5x5x1.0 mm

Material Declaration**:

PDF XML

Marketing Status

Active

Package

VFQFPN 32 5x5x1.0 mm

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

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EAR99 NEC Tape and Reel VFQFPN 32 5x5x1.0 mm - - PHILIPPINES

PM6680ATR Active

Package:
VFQFPN 32 5x5x1.0 mm
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

PM6680ATR

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

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-

Max:

-

Country of Origin:

PHILIPPINES

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(*) 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