CXLB7371是一款用于单电池锂离子电池的恒流/恒压线性充电器。CXLB7371不需要外部MOSFET或二极管，可接受高达6.0V的输入电压。小封装和低外部组件数使CXLB7371非常适合便携式应用。片上热限制简化了PC板布局，并允许最佳充电速率，而不受最坏情况下电池和输入电压的热限制。当达到CXLB7371热极限时，充电器不会关闭，而只是降低充电电流。可使用外部热敏电阻监测环境或蓄电池温度。当温度超出范围时，充电暂停。其他功能包括STAT1和2个输出，用于指示四种充电状态，以及EN输入，用于打开或关闭CXLB7371
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产品概述 返回TOP
The CXLB7371 is a constant-current/constant-voltage linear charger for single cell Li+ batteries. The CXLB7371 needs no external MOSFET or diodes, and accepts input voltage up to 6.0V. The small packages and low external component count make the CXLB7371 ideally suited for portable applications. On-chip thermal limiting simplifies PC board layout and allows optimum charging rate without the thermal limits imposed by worst-case battery and input voltage. When the CXLB7371 thermal limit is reached, the charger does not shut down but simply reduces charging current. Ambient or battery temperature can be monitored with an external thermistor. When the temperature is out of range, charging pauses. Other features include the STAT1 and 2 outputs to indicate four charge states, and the EN input, switches the CXLB7371on or off. The CXLB7371is available in 3mmx3mm DFN-10 package, and operates over the -40°C to +85°C temperature range
产品特点 返回TOP
· Programmable Charge Current Up to 1A
· Charge Status Output Pins
· Soft-Start Limits Inrush Current
· 4.2V Charge Voltage with ±1% Accuracy
· Fixed 55mA Prequal Charge Current
· Thermal Limiting Simplifies Board Design
· External Thermistor Monitor
· Enable/Disable Control
· 3mm x 3mm DFN-10 Package (DFN3x3-10)
· Disable Charging When VIN > 6.4V
· Lead Free and Green Devices Available (RoHS Compliant)
应用范围 返回TOP
· PDAs
· MP3 Players
· Cell Phones
· Wireless Appliances
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产品封装图 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 |
|
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