AP5056系列锂电充电IC：小巧便携、内置MOSFET的高效充电解决方案

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"AP5056系列锂电充电IC是一款专为单节锂离子电池设计的完整恒流恒压线性充电器，其应用范围广泛，特别适合便携式设备。该产品采用SOP8/MSOP8封装，这使得它在小型化设计上具有显著优势。其特点包括内置MOSFET结构，无需外部敏感电阻，可以满足USB电源规范，节省了外部元件数量。 AP5056的核心功能是提供精确且灵活的充电管理。它能够在高功率操作或高温环境下通过热反馈自动调节充电电流，防止电池过热。其固定充电电压为4.2V，可以通过一个外部电阻进行电流编程，实现了个性化的充电设置。当达到最终浮充电压后，当充电电流下降到设定值的1/10时，AP5056会自动结束充电周期，确保电池安全。此外，AP5056在输入电源断开（如墙适配器或USB供电）后，会自动进入低功耗状态，将电池的放电电流降至极低水平，小于2uA，有助于延长电池寿命和系统待机时间。该芯片还支持关断模式，进一步降低了能耗。 AP5056以其小巧的封装、内置保护机制、兼容USB以及低功耗特性，成为便携式电子设备中理想的单节锂离子电池充电解决方案。对于开发者来说，它简化了设计过程，提高了系统的整体效率和用户体验。"

AP5056

Using SOP8/MSOP8 package

1A Linear Li-Ion Battery Charger

Description

The AP5056 is a complete constant current & constant

voltage linear charger for single cell lithium-ion batteries.

Its SOP/MSOP package and low external component

count make the AP5056 ideally suited for portable

applications. Furthermore, the AP5056 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

AP5056 automatically terminates the charge cycle when

the charge current drops to 1/10

the programmed value

after the final float voltage is reached.

When the input supply (wall adapter or USB supply) is

removed, the AP5056 automatically enters a low current

state, dropping the battery drain current to less than 2uA.

The AP5056 can be put into shutdown mode, reducing

the supply current to 50uA.

Other features include Battery temperature monitor,

under-voltage lockout, automatic recharge and two status

pins to indicate charge and charge termination.

Applications

 Cellular Telephones, PDAs, MP3 /MP4 Players

 Charging Docks and Cradles

 Bluetooth 、GPS Applications

Features

 Programmable Charge Current Up to 1000mA

 No MOSFET, Sense Resistor or Blocking Diode

Required

 Complete Linear Charger in SOP/MSOP Package for

single Cell Lithium-Ion Batteries

 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

 Charge Current Monitor Output for Gas Gauging

 Automatic Recharge

 Charge state pairs of output, no battery and fault

status display

 C/10 Charge Termination

 50uA Supply Current in Shutdown

 2.9V Trickle Charge Threshold

 Soft-Start Limits Inrush Current

 Battery temperature monitoring function

 Available in SOP8-PP/ MSOP8-PP Package

Package

 SOP8-PP/MSOP8-PP

Typical Application Circuit

联系人：康Ｒ　　１３５３０００３７１５

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