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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样片和购买

产品型号
封装
包装类型
供货状态
ECCN (US)
Country of Origin
Approximate Price (US$)* / Qty
从ST订购
从分销商订购
L6924UTR VFQFPN 16 3x3x1.0 Tape And Reel
批⁠量⁠生⁠产
EAR99 PHILIPPINES 1.83 / 1k 立即购买 查看供货情况

...的经销商可用性L6924UTR

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 1831 1 马上订购
ARROW EUROPE 8000 0 马上订购
Newark Element14 AMERICA 100 0 马上订购
ARROW AMERICA 362 1 马上订购
MOUSER WORLDWIDE 4408 1 马上订购
Farnell Element14 EUROPE 917 1 马上订购

代理商库存报告日期: 2020-03-26

代理商名称

DIGIKEY

库存

1831

Min.Order

1

地区

WORLDWIDE 马上订购

ARROW

库存

8000

Min.Order

0

地区

EUROPE 马上订购

Newark Element14

库存

100

Min.Order

0

地区

AMERICA 马上订购

ARROW

库存

362

Min.Order

1

地区

AMERICA 马上订购

MOUSER

库存

4408

Min.Order

1

地区

WORLDWIDE 马上订购

Farnell Element14

库存

917

Min.Order

1

地区

EUROPE 马上订购

代理商库存报告日期: 2020-03-26

L6924UTR

封装

VFQFPN 16 3x3x1.0

包装类型

Tape And Reel

Approximate Price (US$)* / Qty

1.83 / 1k

...的经销商可用性L6924UTR

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 1831 1 马上订购
ARROW EUROPE 8000 0 马上订购
Newark Element14 AMERICA 100 0 马上订购
ARROW AMERICA 362 1 马上订购
MOUSER WORLDWIDE 4408 1 马上订购
Farnell Element14 EUROPE 917 1 马上订购

代理商库存报告日期: 2020-03-26

代理商名称

DIGIKEY

库存

1831

Min.Order

1

地区

WORLDWIDE 马上订购

ARROW

库存

8000

Min.Order

0

地区

EUROPE 马上订购

Newark Element14

库存

100

Min.Order

0

地区

AMERICA 马上订购

ARROW

库存

362

Min.Order

1

地区

AMERICA 马上订购

MOUSER

库存

4408

Min.Order

1

地区

WORLDWIDE 马上订购

Farnell Element14

库存

917

Min.Order

1

地区

EUROPE 马上订购

代理商库存报告日期: 2020-03-26

供货状态

批⁠量⁠生⁠产

Budgetary Price (US$)* / Qty

1.83 / 1k

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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