The CXLB7344E CXLB7344D is a complete constant-current / constant voltage linear charger for single cell Lithium-Ion batteries. 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 CXLB7344E CXLB7344D automatically terminates the charge cycle when the charge current drops to 3/10 the programmed value after the final float voltage is reached.
When the input supply (wall adapter or USB supply) is removed, the CXLB7344E CXLB7344D automatically enters a low current state, dropping the battery drain current to less than 0.5uA. The CXLB7344E CXLB7344D can be put into shutdown mode, reducing supply current to 40uA (Typ.).
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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
The CXLB7344E CXLB7344D is a complete constant-current / constant voltage linear charger for single cell Lithium-Ion batteries. 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 CXLB7344E CXLB7344D automatically terminates the charge cycle when the charge current drops to 3/10 the programmed value after the final float voltage is reached.
When the input supply (wall adapter or USB supply) is removed, the CXLB7344E CXLB7344D automatically enters a low current state, dropping the battery drain current to less than 0.5uA. The CXLB7344E CXLB7344D can be put into shutdown mode, reducing supply current to 40uA (Typ.).
The CXLB7344E CXLB7344D is available in a small package with DFN2X2-6L. Standard product is Pb-Free.
二.产品特点
Programmable Charge Current Up to 300mA
Over-Temperature Protection
Under Voltage Lockout Protection
Automatic Recharge Threshold 4.05V(Typ.)
Charge Status Output Pin
2.9V Trickle Charge Threshold
Soft-Start Limits Inrush Current
三.应用范围
Wireless phone
MP3/MP4 Player
Bluetooth device
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......
| 电源管理 > 充电管理 | ||||||||||||
| Product | VIN | VFLOAT | VTRIKL | VRECHRG | VPROG | IPROG | ICHARGE | IBATASD | RON | PD | Package | |
| (Min.) | (Max.) | (Typ.) | (Typ.) | (Typ.) | (Typ.) | (Max.) | (Max.) | (Max.) | (Typ.) | (Max.) | ||
| (V) | (V) | (V) | (V) | (V) | (uA) | (mA) | (uA) | (W) | ||||
| CXLB7344E | 3.8 | 5.5 | 4.2 | 2.9 | 0.15 | 1 | 1.5 | 300 | 1 | 0.2 | 0.5 | DFN2X2-6L |
| CXLB7343E | 3.8 | 5.5 | 4.2 | 2.9 | 0.15 | 1 | 3 | 300 | 1 | 0.2 | 0.5 | SOT-23-5L |
| CXLB7343S | 3.8 | 5.5 | 4.2 | 2.9 | 0.15 | 1 | 3 | 1000 | 1 | 0.2 | 0.8 | SOP-8L-EP |
| CXLB7344D | 3.8 | 5.5 | 4.2 | 2.9 | 0.15 | 1 | 3 | 600 | 1 | 0.2 | 0.5 | SOT-23 |
