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1.产品概述       2.产品特点     afn嘉泰姆

3.应用范围       4.技术规格书下载（PDF文档）afn嘉泰姆

5.产品封装       6.电路原理图  afn嘉泰姆

7.相关产品afn嘉泰姆

   产品概述 返回TOPafn嘉泰姆

               CXLB73123is a complete constant-current & constant voltage linear charger for single cellafn嘉泰姆

lithium-ion and Lithium-Polymer batteries.  Its SOT-23 package and low external component countafn嘉泰姆

make CXLB73123 ideally suited for portable applications.   Furthermore, the CXLB73123 isafn嘉泰姆

specifically designed to work within USB power specification. At the same time, CXLB73123 can alsoafn嘉泰姆

be used in the standalone lithium-ion and Lithium-polymer battery chargers.afn嘉泰姆

No external sense resistor is needed, and no blocking diode is required due to the internalafn嘉泰姆

MOSFET architecture.  Thermal feedback regulates the charge current to limit the dieafn嘉泰姆

temperature during high power operation or high ambient temperature. The charge voltage is fixedafn嘉泰姆

at 4.2V, and the charge current can be programmed externally with a single resistor. The CXLB73123afn嘉泰姆

automatically terminates the charge cycle when the charge current drops to 1/10th the programmedafn嘉泰姆

value after the final float voltage is reached.afn嘉泰姆

When the input supply (wall adapter or USB supply) is removed, the CXLB73123 automaticallyafn嘉泰姆

enters a low current stage, dropping the battery drain current to less than 2uA. The CXLB73123 canafn嘉泰姆

be put into shutdown mode, reducing the supply current to 20uA.afn嘉泰姆

Other features include charge current monitor, undervoltage lockout, automatic recharge and a afn嘉泰姆

status pin to indicate charge termination and the presence of an input voltage. CXLB73123 isafn嘉泰姆

intentionally designed to have slightly negative Tempco. This provides extra protection to Lithiumafn嘉泰姆

battery during charging.afn嘉泰姆

   产品特点 返回TOPafn嘉泰姆

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Programmable Charge Current Up to 800mA.afn嘉泰姆

No MOSFET, Sense Resistor or Blocking Diodeafn嘉泰姆

Required.afn嘉泰姆

Constant-Current/Constant-Voltage Operationafn嘉泰姆

with Thermal Protection to Maximize Chargeafn嘉泰姆

Rate without Risk of Overheating.afn嘉泰姆

Charges Single Cell Li-Ion Batteries Directlyafn嘉泰姆

from USB Port.afn嘉泰姆

Preset 4.2V Charge Voltage with ±1% Accuracy.afn嘉泰姆

20uA Supply Current in Shutdown.afn嘉泰姆

2.9V Trickle Charge Thresholdafn嘉泰姆

Soft-Start Limits Inrush Current.afn嘉泰姆

Available in 6-Lead SOT-23 and PSOP-8afn嘉泰姆

(Exposed Pad) Packages.afn嘉泰姆

RoHS Compliant and 100% Lead (Pb)-Freeafn嘉泰姆

   应用范围 返回TOPafn嘉泰姆

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Cellular Telephones, PDA’s, MP3 Players.afn嘉泰姆

Charging Docks and Cradlesafn嘉泰姆

Bluetooth Applicationsafn嘉泰姆

   技术规格书（产品PDF) 返回TOP afn嘉泰姆

     需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！afn嘉泰姆

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产品封装图 返回TOPafn嘉泰姆

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电路原理图 返回TOPafn嘉泰姆

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◀ Previous:CXLB73122 can also be used in the standalone lithium-ion and Lithium-polymer battery chargers. No external sense resistor is needed no blocking diode is required due to the internal MOSFET

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Next▶:The CXLB73124 is a complete constant-current constant-voltage linear charger for single cell lithium-ion batteries work within USB wall adapter No blocking diode is required due the interna