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PDF AP5054 Data sheet ( Hoja de datos )
| Número de pieza | AP5054 | |
| Descripción | Standalone Linear Li-Ion Battery Charger | |
| Fabricantes | Chipown | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AP5054 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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AP5054
Chipown
Standalone Linear Li-Ion Battery
Charger With Thermal Regulation In SOT
Description
The AP5054 is a complete constant current & constant
voltage linear charger for single cell lithium-ion batteries.
Its SOT package and low external component count
make the AP5054 ideally suited for portable applications.
Furthermore, the AP5054 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
AP5054 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 AP5054 automatically enters a low current
state, dropping the battery drain current to less than 2uA.
The AP5054 can be put into shutdown mode, reducing
the supply current to 25uA.
Other features include charge current monitor,
under-voltage lockout, automatic recharge and a status
pin to indicate charge termination and the presence of an
input voltage.
Applications
Cellular Telephones, PDAs, MP3 /MP4 Players
Charging Docks and Cradles
Bluetooth 、GPS Applications
Features
Programmable Charge Current Up to 750mA
No MOSFET, Sense Resistor or Blocking Diode
Required
Complete Linear Charger in SOT 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 Status Output Pin
C/10 Charge Termination
25uA Supply Current in Shutdown
2.9V Trickle Charge Threshold
Soft-Start Limits Inrush Current
Available in 5-Lead SOT-23 Package
Package
SOT23-5L
Block Diagram
8/F, ChuangYuan Building No.21-1 Changjiang Road, Wuxi New Destrict Tel: +86(510)8521-7718 http://www.chipown.com.cn
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1 page  
AP5054
Chipown
8/F, ChuangYuan Building No.21-1 Changjiang Road, Wuxi New Destrict Tel: +86(510)8521-7718 http://www.chipown.com.cn
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet AP5054.PDF ] | |
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