L6924U

批量生产

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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从分销商订购
从ST订购
L6924UTR VFQFPN 16 3x3x1.0 Tape And Reel
批⁠量⁠生⁠产
0.775 1000 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 1849 1 Order Now
AVNET AMERICA 4000 0 Order Now
ARROW EUROPE 8000 0 Order Now
Newark Element14 AMERICA 100 0 Order Now
ARROW AMERICA 362 1 Order Now
MOUSER WORLDWIDE 4409 1 Order Now
Farnell Element14 EUROPE 1026 1 Order Now

代理商库存报告日期: 2020-02-16

代理商名称

DIGIKEY

库存

1849

Min.Order

1

地区

WORLDWIDE Order Now

AVNET

库存

4000

Min.Order

0

地区

AMERICA Order Now

ARROW

库存

8000

Min.Order

0

地区

EUROPE Order Now

Newark Element14

库存

100

Min.Order

0

地区

AMERICA 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

1026

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2020-02-16

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 1849 1 Order Now
AVNET AMERICA 4000 0 Order Now
ARROW EUROPE 8000 0 Order Now
Newark Element14 AMERICA 100 0 Order Now
ARROW AMERICA 362 1 Order Now
MOUSER WORLDWIDE 4409 1 Order Now
Farnell Element14 EUROPE 1026 1 Order Now

代理商库存报告日期: 2020-02-16

代理商名称

DIGIKEY

库存

1849

Min.Order

1

地区

WORLDWIDE Order Now

AVNET

库存

4000

Min.Order

0

地区

AMERICA Order Now

ARROW

库存

8000

Min.Order

0

地区

EUROPE Order Now

Newark Element14

库存

100

Min.Order

0

地区

AMERICA 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

1026

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2020-02-16

供货状态

批⁠量⁠生⁠产

单价(US$)

0.775

数量

1000

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 材料声明**
L6924UTR
批量生产
VFQFPN 16 3x3x1.0 Industrial 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

(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此,它们可能不是100%适用于特定的设备。有关特定设备的信息,请联系 销售支持

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