SLKOR SL3105A Linear Li-lon Battery Charger Featuring Preset 4.2V/4.3V/4.35V/4.4V Charge Voltage with ±1% Accuracy
Today, we will introduce the SL3105A SL3105 Series-High input Voltage Linear Li-lon Battery Charger.
Fig.1
Description
The SL3105 Series is a complete constant current constant voltage linear charger for single-cell lithium-ion batteries. Its DFN package and low external component counts make the SL3105 Seres ideally suited for portable applications. Furthermore, the SL3105 Series 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. The charge voltage is fixed at 4.2V/4.3V/4.35V/4.4V, and the charge current can be programmed externally with a single resistor. The SL3105 Series 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 SL3105 Series automatically enters a low current state, dropping the battery drain current to less than 2μA. The SL3105 Series can be put into shutdown mode, reducing the supply content to 50μA. Under-voltage lockout, automatic recharge, and two status pins to indicate charge and charge termination.
Features
● 30V standoff input voltage at VCC pin
● Programmable Charge Current Up to 1000mA
● No MOSFET.Sense Resistor or Blocking Diode Required
● Complete Linear Charger in DFN Package for single Cell Lithium-lon Batteries
● Charges Single Cell Li-lon Batteries Directly from the USB Port
● Preset 4.2V/4.3V/4.35V/4.4V 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
● CC/10 Charge Termination
● 50μA Supply Current in Shutdown
● 2.9V Trickle Charge Threshold
● Soft-Start Limits Inrush Current
● ESD HBM 2KV
● Available in DFN2x2-8 Package
Applications
● Cellular Telephones, PDAs, MP3 Players/MP4 Players
● E-cigarettes
● Bluetooth
● GPS Applications
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