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AP5056

Using SOP8/MSOP8 package 1A Linear Li-Ion Battery Charger

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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 1/10th 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

 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

8

2

7

3

6

4

5

 Programmable Charge Current Up to 1000mA

Typical Application Circuit

1

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