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AF4057 Datasheet

Part Number AF4057
Manufacturers AFSEMI
Logo AFSEMI
Description 1.1A Lithium Ion Battery Linear Charger
Datasheet AF4057 DatasheetAF4057 Datasheet (PDF)

AF4057 1.1A Lithium Ion Battery Linear Charger GENERAL DESCRIPTION AF4057 is a complete CC/CV linear charger for single cell lithium-ion batteries. It 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 P-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 4.35V,.

  AF4057   AF4057






Part Number AF4056E
Manufacturers AFSEMI
Logo AFSEMI
Description 1.1A Lithium Ion Battery Linear Charger
Datasheet AF4057 DatasheetAF4056E Datasheet (PDF)

AF4056E 1.1A Lithium Ion Battery Linear Charger GENERAL DESCRIPTION AF4056E is a complete CC/CV linear charger for single cell lithium-ion batteries. It 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 P-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.

  AF4057   AF4057







Part Number AF4055
Manufacturers AFSEMI
Logo AFSEMI
Description 800mA Lithium Ion Battery Linear Charger
Datasheet AF4057 DatasheetAF4055 Datasheet (PDF)

AF4055 800mA Lithium Ion Battery Linear Charger GENERAL DESCRIPTION AF4055 is a complete CC/CV linear charger for single cell lithium-ion batteries. it 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 P-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,a.

  AF4057   AF4057







Part Number AF4054B
Manufacturers AFSEMI
Logo AFSEMI
Description Linear Li-Ion Battery Charger
Datasheet AF4057 DatasheetAF4054B Datasheet (PDF)

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  AF4057   AF4057







Part Number AF4054
Manufacturers AFSEMI
Logo AFSEMI
Description 800mA Lithium Ion Battery Linear Charger
Datasheet AF4057 DatasheetAF4054 Datasheet (PDF)

AF4054 800mA Lithium Ion Battery Linear Charger GENERAL DESCRIPTION AF4054 is a complete CC/CV linear charger for single cell lithium-ion batteries. it 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 P-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,a.

  AF4057   AF4057







1.1A Lithium Ion Battery Linear Charger

AF4057 1.1A Lithium Ion Battery Linear Charger GENERAL DESCRIPTION AF4057 is a complete CC/CV linear charger for single cell lithium-ion batteries. It 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 P-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 4.35V, and the charge current can be programmed externally with a single resistor. The AF4057 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 AF4057 automatically enters a low current state dropping the battery drain current to less than 2μA.The AF4057 can be put into shutdown mode reducing the supply current to 55μA. Other features includ.


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