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可编程充电电流800毫安CXLB73123单电池恒流恒压线性充电器锂离子和锂聚合物电池当充电电流降至编程值的1/10时自动终止充电循环达到最终浮充电压后的值
| 产品型号： | CXLB73123 |
| 产品类型： | 电池充电IC |
| 产品系列： | 单节锂电池充电芯片 |
| 产品状态： | 量产 |
| 浏览次数： | 35 次 |
产品简介
专为工作在USB电源规格。同时，CXLB73123还可以用于独立锂离子和锂聚合物电池充电器。不需要外部感应电阻，也不需要由于内部MOSFET结构。热反馈调节充电电流以限制模具高功率运行或高环境温度时的温度。充电电压是固定的在4.2V时，充电电流可以用一个电阻器进行外部编程。CXLB73123当充电电流降至编程值的1/10时，自动终止充电循环
达到最终浮充电压后的值。当卸下输入电源（墙壁适配器或USB电源）时，CXLB73123将自动进入低电流阶段，电池放电电流降至小于2uA。CXLB73123可以进入关机模式，将电源电流降至20uA。其他功能包括充电电流监视器、欠压锁定、自动充电和指示充电终止和输入电压存在的状态引脚。CXLB73123是故意设计的有点消极的温度。这为锂提供了额外的保护
充电时使用电池。
技术参数
| 输入电压范围 (VIN) | V ~ 8VV |
|---|---|
| 输出电压 (VOUT) | 4.22V |
| 输出电流 (IOUT) | 800mA A |
| 工作频率 | 3MHz |
| 转换效率 | 94% % |
| 封装类型 | SOT23-6 PSOP8? |
| Type | 单节锂电池充电芯片 |
| Charge voltage | 8V |
| Charge current | 800mA |
| Battery type | 4.22 |
| Charge method | CC/CV线性模式 |
| Charge status | 双灯 |
| Protection | 过流/过压/过温/过充/短路 |
| Communication | QC2.0 QC3.0 |
| Features | 单节锂电池充电芯片 |
| Application | 电池充电IC |
| Iq | 25μA |
| 电池节数 | 1节锂电池 |
| 精度 | ±1% |
| 充电载止电压 | 充电结束时电压(V):4.2V |
产品详细介绍
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
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|
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 |
|
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