USB compatible battery charger system with integrated power switch for Li-Ion/Li-Polymer

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  • The L6924U is a fully monolithic battery charger that safely charges single-cell Li-Ion/Polymer battery from either a USB power source or an AC adapter. In USB mode, the L6924U supports both low-power and high-power mode. Alternatively the device can charge from an AC wall adapter. The ideal solution for space-limited portable products integrates the power MOSFET, reverse blocking diode, sense resistor and thermal protection into a compact VFQFPN16 package. When an external voltage regulated adapter or USB port is used, the L6924U 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 and it allows the user to program many parameters, such as fast-charge current, end-of-charge current threshold, and charge timer. The L6924U 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 L6924U also provides other features like gas gauge function, checks for battery presence, and monitors and protects the battery from unsafe thermal conditions.

    主要特性

    • Fully integrated solution, with power MOSFET, reverse blocking diode, sense resistor, and thermal protection
    • Charges single-cell Li-Ion batteries from selectable AC adapter or USB input
    • Programmable charge current up to 1 A in AC adapter mode
    • Programmable charging current in USB mode for both high-power and low-power inputs
    • 4.2 V output voltage with ± 1 % accuracy
    • Linear or quasi-pulse operating mode
    • Closed-loop thermal control
    • Programmable end-of-charge current
    • Programmable charge timer
    • (NTC) or (PTC) thermistor interface for battery temperature monitoring and protection
    • 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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从ST订购
L6924UTR VFQFPN 16 3x3x1.0 Tape And Reel
批量生产
0.775 10000 EAR99 PHILIPPINES 查看供货情况

Distributor availability ofL6924UTR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 1890 1 Order Now
AVNET AMERICA 4000 0 Order Now
ARROW EUROPE 4000 0 Order Now
ARROW AMERICA 362 1 Order Now
MOUSER WORLDWIDE 4409 1 Order Now
Farnell Element14 EUROPE 1100 1 Order Now

代理商库存报告日期: 2019-12-08

代理商名称

DIGIKEY

库存

1890

Min.Order

1

地区

WORLDWIDE Order Now

AVNET

库存

4000

Min.Order

0

地区

AMERICA Order Now

ARROW

库存

4000

Min.Order

0

地区

EUROPE Order Now

ARROW

库存

362

Min.Order

1

地区

AMERICA Order Now

MOUSER

库存

4409

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

1100

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-12-08

立即购买

L6924UTR

封装

VFQFPN 16 3x3x1.0

包装类型

Tape And Reel

单价(US$)

0.775*

Distributor availability ofL6924UTR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 1890 1 Order Now
AVNET AMERICA 4000 0 Order Now
ARROW EUROPE 4000 0 Order Now
ARROW AMERICA 362 1 Order Now
MOUSER WORLDWIDE 4409 1 Order Now
Farnell Element14 EUROPE 1100 1 Order Now

代理商库存报告日期: 2019-12-08

代理商名称

DIGIKEY

库存

1890

Min.Order

1

地区

WORLDWIDE Order Now

AVNET

库存

4000

Min.Order

0

地区

AMERICA Order Now

ARROW

库存

4000

Min.Order

0

地区

EUROPE Order Now

ARROW

库存

362

Min.Order

1

地区

AMERICA Order Now

MOUSER

库存

4409

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

1100

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-12-08

供货状态

批量生产

单价(US$)

0.775

数量

10000

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

(*) 建议转售单价(美元)仅用于预算用途。如需以当地货币计价的报价,请联系您当地的 ST销售办事处 或我们的 经销商

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产品型号 供货状态 封装 等级规格 符合RoHS级别 Material Declaration**
L6924UTR
批量生产
VFQFPN 16 3x3x1.0 工业 Ecopack2

L6924UTR

Package:

VFQFPN 16 3x3x1.0

Material Declaration**:

PDF XML

Marketing Status

批量生产

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.

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