L6924D

Active

Battery charger system with integrated power switch for Li-Ion/Li-Polymer

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  • The L6924D is a fully monolithic battery charger dedicated to single-cell Li-Ion/Polymer battery packs. It is the ideal solution for space-limited applications, like handheld equipment, and digital cameras. It integrates all of the power elements (the power MOSFET, reverse blocking diode and the sense resistor) in a small VFQFPN16 (3 x 3 mm) package. When an external voltage-regulated wall adapter is used, the L6924D works in linear mode, and charges the battery in a constant current/constant voltage (CC/CV) profile. Moreover, when a current-limited adapter is used, the device can operate in quasi-pulse mode, dramatically reducing the power dissipation. Regardless of the charging approach, a closed-loop thermal control avoids device overheating. The device has an operating input voltage ranging from 2.5 V to 12 V. The L6924D allows the user to program many parameters, such as pre-charge current, fast-charge current, pre-charge voltage threshold, end-of-charge current threshold, and charge timer. The L6924D offers two open collector outputs for diagnostic purposes, which can be used to either drive two external LEDs or communicate with a host microcontroller. Finally, the L6924D also provides very flexible control of the charge process termination and gas gauge capability, as well as other functions, such as checking for battery presence, and monitoring and protecting the battery from unsafe thermal conditions.

    Key Features

    • Fully integrated solution, with a power MOSFET, reverse blocking diode, sense resistor, and thermal protection
    • Ideal for coke and graphite anode single-cell LI-ION packs
    • Both linear and quasi-pulse operation
    • Closed loop thermal control
    • USB BUS-compatible
    • Programmable charge current up to 1 A
    • Programmable pre-charge current
    • Programmable end-of-charge current
    • Programmable pre-charge voltage threshold
    • Programmable charge timer
    • Programmable output voltage at 4.1 V and 4.2 V, with ± 1 % output voltage accuracy
    • (NTC) or (PTC) thermistor interface for battery temperature monitoring and protection
    • Flexible charge process termination
    • Status outputs to drive LEDs or to interface with a host processor
    • Small VFQFPN 16-lead package (3 x 3 mm)

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    • Part number
      Status
      Description
      Type
      Supplier

      STEVAL-ISA076V1

      Active

      Battery charger demonstration board with integrated power switch for Li-ION/Li-POLYMER based on the L6924D

      PSU and Converter Solution Eval Boards --
      STEVAL-ISA076V1

      Description:

      Battery charger demonstration board with integrated power switch for Li-ION/Li-POLYMER based on the L6924D

CAD/EDA Symbols, Footprints and Models

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L6924D013TR
Active
VFQFPN 16 3x3x1.0 Industrial Ecopack2

L6924D013TR

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

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Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
L6924D013TR Available at 7 distributors

Distributor availability ofL6924D013TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 9264 1 Order Now
COMPEL EUROPE 17484 1 Order Now
RS COMPONENTS EUROPE 3545 1 Order Now
ARROW EUROPE 17422 0 Order Now
Newark Element14 AMERICA 100 0 Order Now
MOUSER WORLDWIDE 3684 1 Order Now
Farnell Element14 EUROPE 3298 1 Order Now

Distributor reported inventory date: 2020-10-20

Distributor Name

DIGIKEY

Stock

9264

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

17484

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

3545

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

17422

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

100

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

3684

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

3298

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-20

Buy Direct
Active
EAR99 NEC Tape And Reel VFQFPN 16 3x3x1.0 -40 125 PHILIPPINES 0.75 / 1k

L6924D013TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.75 / 1k

Distributor availability ofL6924D013TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 9264 1 Order Now
COMPEL EUROPE 17484 1 Order Now
RS COMPONENTS EUROPE 3545 1 Order Now
ARROW EUROPE 17422 0 Order Now
Newark Element14 AMERICA 100 0 Order Now
MOUSER WORLDWIDE 3684 1 Order Now
Farnell Element14 EUROPE 3298 1 Order Now

Distributor reported inventory date: 2020-10-20

Distributor Name

DIGIKEY

Stock

9264

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

17484

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

3545

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

17422

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

100

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

3684

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

3298

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-20

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

VFQFPN 16 3x3x1.0

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.75 / 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