CXLB7372是一款用于单电池锂电池的恒流/恒压线性充电器。CXLB7372不需要外部mosfet或二极管，它可接受高达6.5V的输入电压。小封装和低外部组件数使CXLB7372成为便携式应用的理想部件。芯片内热调节可防止ACXLB7372温度过高，并针对紧凑的尺寸和典型的热条件优化电路板设计。当结温达到热调节阈值时，充电器不会关闭，而只是降低充电电流。充电电流可以通过将一个外部电阻从ISET引脚连接到GND进行编程。使用外部MOSFET将电阻器从地上断开会关闭充电器，并将输入电源电流降低至25毫安。ACXLB7372还具有指示充电状态的STAT引脚。
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产品概述 返回TOP
The CXLB7372 is a constant-current/constant-voltage linear charger for single cell Li+ batteries. The CXLB7372 needs no external MOSFETs or diodes, and accepts input voltages up to 6.5V. The small package and low external component counts make the CXLB7372 an idea part for portable applications。On-chip thermal regulation protects the ACXLB7372from excessive temperature and optimizes the board design for compact size and typical thermal conditions. When the junction temperature reaches the thermal regulation threshold, the charger does not shut down but simply reduces the charge current. Charge current can be programmed by connecting an external resistor from ISET pin to GND. Using an external MOSFET to disconnect the resistor from ground shuts down the charger, and reduces the input supply current down to 25mA. The ACXLB7372also has the STAT pin to indicate charge status. The ACXLB7372is available in a SOT-23-5 package, and operates over the -40°C to +85°C temperature range
产品特点 返回TOP
· Programmable Charge Current Up to 500mA
· Charge Status Output Pin
· Soft-Start Limits Inrush Current
· 4.2V Charge Termination Voltage with ±1% Accuracy
· 45mA Pre-charge Current (RSET =2K)
· Thermal Regulation Simplifies Board Design
· Enable/Disable Control
· Available in a SOT-23-5 Package
· Lead Free and Green Devices Available (RoHS Compliant)
应用范围 返回TOP
· Bluetooth Applications
· MP3 Players
· Cell Phones
· Wireless Appliances
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产品封装图 返回TOP
电路原理图 返回TOP
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Battery Charger > Linear Charger |
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Part_No |
Package |
Input Voltage(V) |
Quiescent Current (uA) |
Charge Current (max)(A) |
Battery Charge Voltage |
VIN OVP |
USB Input |
Battery-Load Switch |
Charge State Output |
|
|
min |
max |
|||||||||
|
4.35 |
6 |
2000 |
1000 |
4.2 |
Y |
Y |
Y |
Y |
||
|
DFN3x3-10 |
4.35 |
6 |
2000 |
1000 |
4.2 |
N |
N |
N |
Y |
|
|
SOT-23-5 |
4.35 |
6 |
300 |
500 |
4.2 |
N |
N |
N |
Y |
|
|
DFN3x3-10 |
4.35 |
6.5 |
300 |
500 |
4.2 |
N |
N |
N |
Y |
|
◀ 上一篇:可编程充电电流1A单电池锂离子电池的恒流恒压线性充电器CXLB7371可使用外部热敏电阻监测环境或蓄电池温度固定55mA预充电电流热限制简化了电路板设计外部热敏电阻监视器启用禁用控制
下一篇▶:LDO稳压器限流保护调节器短路电流限制调节器热保护CXLB7373锂电池充电器和低压差恒流恒压线性稳压器组合可编程充电电流700毫安
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