CXLB73123is a complete constant-current & constant voltage linear charger for single cell
lithium-ion and Lithium-Polymer batteries. Its SOT-23 package and low external component count
make CXLB73123 ideally suited for portable applications. Furthermore, the CXLB73123 is
specifically designed to work within USB power specification. At the same time, CXLB73123 can also
be used in the standalone lithium-ion and Lithium-polymer battery chargers.
No external sense resistor is needed, and no blocking diode is required due to the internal
MOSFET architecture. Thermal feedback regulates the charge current to limit the die
temperature during high power operation or high ambient temperature. The charge voltage is fixed
at 4.2V, and the charge current can be programmed externally with a single resistor. The CXLB73123
automatically terminates the charge cycle when the charge current drops to 1/10th the programmed
value after the final float voltage is reached.
When the input supply (wall adapter or USB supply) is removed, the CXLB73123 automatically
enters a low current stage, dropping the battery drain current to less than 2uA. The CXLB73123 can
be put into shutdown mode, reducing the supply current to 20uA.
Other features include charge current monitor, undervoltage lockout, automatic recharge and a
status pin to indicate charge termination and the presence of an input voltage. CXLB73123 is
intentionally designed to have slightly negative Tempco. This provides extra protection to Lithium
battery during charging.
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[ CXLB73123 ]"
目录
7.相关产品
产品概述 返回TOP
CXLB73123is a complete constant-current & constant voltage linear charger for single cell
lithium-ion and Lithium-Polymer batteries. Its SOT-23 package and low external component count
make CXLB73123 ideally suited for portable applications. Furthermore, the CXLB73123 is
specifically designed to work within USB power specification. At the same time, CXLB73123 can also
be used in the standalone lithium-ion and Lithium-polymer battery chargers.
No external sense resistor is needed, and no blocking diode is required due to the internal
MOSFET architecture. Thermal feedback regulates the charge current to limit the die
temperature during high power operation or high ambient temperature. The charge voltage is fixed
at 4.2V, and the charge current can be programmed externally with a single resistor. The CXLB73123
automatically terminates the charge cycle when the charge current drops to 1/10th the programmed
value after the final float voltage is reached.
When the input supply (wall adapter or USB supply) is removed, the CXLB73123 automatically
enters a low current stage, dropping the battery drain current to less than 2uA. The CXLB73123 can
be put into shutdown mode, reducing the supply current to 20uA.
Other features include charge current monitor, undervoltage lockout, automatic recharge and a
status pin to indicate charge termination and the presence of an input voltage. CXLB73123 is
intentionally designed to have slightly negative Tempco. This provides extra protection to Lithium
battery during charging.
产品特点 返回TOP
Programmable Charge Current Up to 800mA.
No MOSFET, Sense Resistor or Blocking Diode
Required.
Constant-Current/Constant-Voltage Operation
with Thermal Protection to Maximize Charge
Rate without Risk of Overheating.
Charges Single Cell Li-Ion Batteries Directly
from USB Port.
Preset 4.2V Charge Voltage with ±1% Accuracy.
20uA Supply Current in Shutdown.
2.9V Trickle Charge Threshold
Soft-Start Limits Inrush Current.
Available in 6-Lead SOT-23 and PSOP-8
(Exposed Pad) Packages.
RoHS Compliant and 100% Lead (Pb)-Free
应用范围 返回TOP
Cellular Telephones, PDA’s, MP3 Players.
Charging Docks and Cradles
Bluetooth Applications
技术规格书（产品PDF) 返回TOP
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！
产品封装图 返回TOP
电路原理图 返回TOP
相关芯片选择指南 返回TOP 更多同类产品......
|
Battery Charger（锂电池充电） |
|||||||
|
Product |
status |
VccMax |
Vbat |
IOUT Max |
Polarity Detect |
OTP、OCP |
Pkg |
|
Active |
8V |
4.35 |
1A |
NO |
Yes |
SOT23-5 PSOP8 |
|
|
Active |
8V |
4.22 |
1A |
NO |
Yes |
SOP8 PSOP8（电子烟） |
|
|
Active |
8V |
4.22 |
800mA |
NO(单灯) |
Yes |
SOT23-5 |
|
|
Active |
8V |
4.22 |
800mA |
NO(双灯） |
Yes |
SOT23-6 PSOP8 |
|
|
Active |
8V |
4.22 |
1A |
NO |
Yes |
PSOP8/DFN2*2-6 |
|
|
Active |
8V |
4.22/4.35 |
2.5A |
YES(单灯） |
Yes |
PSOP8 |
|
|
Active |
8V |
4.22/4.35 |
2.5A |
YES(双灯） |
Yes |
PSOP8 |
|
