CXLB7326 is a constant-current/constant-voltage linear charger for single cell lithium-ion batteries. Its Thin SOT package and low external component count make the CXLB7326B ideally suited for portable applications. Furthermore, the CXLB7326B is specifically designed to work within USB power specifications. 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 CXLB7326B automatically terminates he 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 CXLB7326B automatically enters a low current state, dropping the battery drain current to less than 2μA.
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目录
1.产品概述 2.产品特点 3.应用范围 4.技术规格书下载（PDF文档）
一.产品概述
CXLB7326 is a constant-current/constant-voltage linear charger for single cell lithium-ion batteries. Its Thin SOT package and low external component count make the CXLB7326B ideally suited for portable applications. Furthermore, the CXLB7326B is specifically designed to work within USB power specifications. 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 CXLB7326B automatically terminates he 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 CXLB7326B automatically enters a low current state, dropping the battery drain current to less than 2μA.The CXLB7326Bcan be put into shutdown mode, reducing the supply current to 25μA. Other features include charge current monitor, undervoltage lockout, automatic recharge and a status pin
二.产品特点
Programmable Charge Current Up to 800mA
No MOSFET, Sense Resistor or Blocking Diode Required
Complete Linear Charger in ThinSOT Package for Single Cell Lithium-Ion atteries
Constant-Current/Constant-Voltage Operation with Thermal Regulation 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
Automatic Recharge
Charge Status Output Pin
C/10 Charge Termination
25μA Supply Current in Shutdown
2.9V Trickle Charge Threshold
Soft-Start Limits Inrush Current
Available in 5-Lead SOT-23 Package
三.应用范围
Cellular Telephones, PDAs, MP3 Players
Charging Docks and Cradles
Bluetooth Applications
四.技术规格书（产品PDF)
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！
五.产品封装图
六.电路原理图
七.相关芯片选择指南 更多同类产品......
| Li-ion Battery Charger(锂电池充电芯片) | |||||||
| Part Number | VFLOAT | VIN | Max Charger | Charger | Accu. | IQ | Package |
| Type | |||||||
| CXLB7326 | 4.2V | 4.25-6.5V | 800mA | Linear | ±1% | 25uA | SOT23-5 |
| CXLB7327 | 4.2V | 4.25-6.5V | 800mA | Linear | ±1% | 55uA | SOT23-5 |
| CXLB7328 | 4.2V | 4.25-6.5V | 800mA | Linear | ±1% | 55uA | SOT23-5 |
| CXLB7329 | 4.2V | 4.25-6.5V | 800mA | Linear | ±1% | 55uA | SOT23-6 |
| CXLB7330 | 4.2V/4.34V | 4.25-6.5V | 1000mA | Linear | ±1% | 55uA | ESOP8 |
| CXLB7331 | 4.2V/4.34V | 4.25-6.5V | 1000mA | Linear | ±1% | 55uA | ESOP8 |
| CXLB7332 | 8.4V/8.7V | 4.7-20V | 2000mA | Switch | ±1% | 10uA | SOP8 |
| CXLB7333 | 4.2V/4.34V | 4.7-5.5V | 2000mA | Switch | ±1% | 1uA | ESOP8 |
| Applications：①Mobile phone②MID③PDA④Battery Charger⑤Bluetooth equipment | |||||||
