PM6686

Active

Dual step-down controller with adjustable voltages, adjustable LDO and auxiliary charge pump controller for notebook

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  • PM6686 is a dual step-down controller specifically designed to provide extremely high efficiency conversion, with lossless 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. Pulse skipping technique increases efficiency at very light load. Moreover a minimum switching frequency of 33 kHz is selectable to avoid audio noise issues. The PM6686 provides a selectable switching frequency, allowing three different values of switching frequencies for the two switching sections. The output voltages OUT1 and OUT2 can be programmed to regulate 1.5 V/5 V and 1.05 V/3.3 V outputs respectively or can deliver two adjustable output voltages. An optional external charge pump can be monitored.

    This device embeds a linear regulator that can provide 3.3 V/5 V or an adjustable voltage from 0.7 V to 4.5 V output. The linear regulator provides up to 100 mA output current. LDO can be bypassed with the switching regulator outputs or with an external power supply (switchover function).
    When in switchover, the LDO output can source up to 200 mA.

    Key Features

    • Latched OVP and UVP
    • Independent Power Good and EN signals
    • Fixed 3.3 V/5.0 V, or adjustable output 0.7 V to 4.5 V, ± 1.5% (LDO): 200 mA
    • Charge pump feedback
    • 2.0 V reference voltage ± 1.0%: 50 μA
    • 3.3 V reference voltage ± 2.0%: 5 mA
    • Selectable pulse skipping at light loads
    • Soft-start internally fixed at 2 ms and soft-stop
    • 5.5 V to 28 V input voltage range
    • Low-side MOSFETs' RDS(on) current sensing and programmable current limit
    • Dual fixed OUT1 = 1.5 V/5 V and OUT2 = 1.05 V / 3.3 V outputs or adjustable OUT1 = 0.7 V to 5.5 V and OUT2 = 0.7 V to 2.5 V outputs, ± 1.5% accuracy over valley regulation
    • Frequency selectable
    • Selectable minimum frequency (33 kHz) in pulse skip mode
    • Constant ON-time control

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
PM6686
Active
QFN32 5x5 Industrial Ecopack2
PM6686TR
Active
QFN32 5x5 Industrial Ecopack2

PM6686

Package:

QFN32 5x5

Material Declaration**:

PDF XML

Marketing Status

Active

Package

QFN32 5x5

Grade

Industrial

RoHS Compliance Grade

Ecopack2

PM6686TR

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.

Sample & Buy

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ECCN (US)
ECCN (EU)
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Temperature (°C) Country of Origin
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PM6686 No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tray QFN32 5x5 - - PHILIPPINES 1.321 / 1k
PM6686TR Available at 1 distributors

Distributor availability ofPM6686TR

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 2083 1 Order Now

Distributor reported inventory date: 2020-09-25

Distributor Name

MOUSER

Stock

2083

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-09-25

Buy now
Active
EAR99 NEC Tape And Reel QFN32 5x5 - - PHILIPPINES 1.321 / 1k

PM6686

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.321 / 1k

ECCN (EU)

NEC

Packing Type

Tray

Package

QFN32 5x5

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

1.321 / 1k

Country of Origin

PHILIPPINES

PM6686TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.321 / 1k

Distributor availability ofPM6686TR

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 2083 1 Order Now

Distributor reported inventory date: 2020-09-25

Distributor Name

MOUSER

Stock

2083

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-09-25

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

QFN32 5x5

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

1.321 / 1k

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