CXPR7897是一款充电器前端集成电路，旨在保护锂离子电池免受充电电路故障的影响。集成电路连续监测输入电压和蓄电池电压。该装置像线性调节器一样工作，在输入电压达到输入过电压阈值（VOVP=6.8V）的情况下保持5.1V的输出。在输入过电压条件下，集成电路立即关闭内部通场效应管，将充电电路与损坏的输入源断开。此外，如果充电时电池电压上升到不安全的水平，系统将断电。该集成电路还监测其模具温度，并在温度超过145℃时关闭。当IC由处理器控制时，IC向主机提供有关故障状况的状态信息
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[ CXPR7897 ]
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产品概述 返回TOP
The CXPR7897 is a charger front-end integrated circuit designed to provide protection to Li-ion batteries from failures of the charging circuitry. The IC continuously monitors the input voltage and the battery voltage. The device operates like a linear regulator, maintaining a 5.1V output with input voltages up to the input over-voltage threshold (VOVP = 6.8V). During input over-voltage conditions, the IC immediately turns off the internal pass FET disconnecting the charging circuitry from the damaging input source. Additionally, if the battery voltage rises to unsafe levels while charging, power is removed from the system. The IC also monitors its die temperature and switches off if it exceeds 145℃. When the IC is controlled by a processor, the IC provides status information about fault conditions to the host.The CXPR7897 is available in Green TDFN-2×2-8L and MSOP-8 (Exposed Pad) packages and is rated over the -40℃ to +85℃ temperature range.
产品特点 返回TOP
• Input Over-Voltage Protection
• Accurate Battery Over-Voltage Protection
• Soft-Start to Prevent Inrush Currents
• Soft-Stop to Prevent Voltage Spikes
• 18V Maximum Input Voltage
• Supports up to 1.5A Load Current
• Thermal Shutdown
• Enable Function
• Fault Status Indication
• Available in Green MSOP-8 (Exposed Pad) and
TDFN-2×2-8L Packages
应用范围 返回TOP
Smart Phones, Mobile Phones
PDAs
MP3 Players
Low-Power Handheld Device
技术规格书（产品PDF) 返回TOP
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产品封装图 返回TOP
电路原理图 返回TOP
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过压保护器件 |
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Product |
Input Over-Voltage Protection Threshold (V) |
Battery Over-Voltage Protection Threshold (V) |
Maximum Strat-Up Output Current (mA) |
SHDN Iq (μA) |
LDO Mode Output Voltage (V) |
Package |
|
6.8 |
4.35 |
1500 |
2 |
5.1 |
TDFN-2x2-8L MSOP-8(EP) |
|
|
6.8 |
4.35 |
adj (max 1500) |
2 |
5.1 |
TDFN-2x2-8L |
|
|
7.1 |
4.35 |
1500 |
2 |
5.1 |
TDFN-2x2-8L |
|
|
7.1 |
4.35 |
adj (max 1500) |
2 |
5.1 |
TDFN-2x2-8L |
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