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4056

Part Number	4056
Manufacturer	ChipSourceTek
Description	CC/CV linear charger
Published	Jan 7, 2024
Detailed Description	Descriptions 4056 4056 is a complete CC/CV linear charger for single cell lithium-ion batteries. it is specifically d...
Datasheet	4056 PDF File

Overview

Descriptions 4056 4056 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,and the charge current can be programmed externally with a single resistor.
The 4056 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 4056 automatically enters a low current state dropping the battery drain current to less than 2μA.
The 4056 can be put into shut down mode reducing the supply current to 55μA.
Other features include Battery temperature monitor, under-voltage lockout, automatic recharge and two status pins to indicate charge and charge termination.
Features k Protection of battery cell reverse connection Programmable charge current up to 1.
1A e No MOSFET sense resistor or blocking diode required Complete linear Charger for single Cell Lithium-Ion Batteries T CC and CV operation with thermal regulation to maximize Rate without risk of overheating Preset 4.
2V charge voltage with ±1% accuracy e Automatic Recharge rc Two Status Indication for Charge status, no battery and battery failure indicators C/10 charge termination 55μA supply current in shutdown u 2.
9V trickle current charge threshold Soft-Start limits inrush current o Battery Temperature Sensing Available in SOP-8 and ESOP-8 package.
S Applications ip Cellular Telephones Mobile Power Supply Digital Still Cameras h MP3 Players C Bluetooth Applications Portable Devices USB Bus-Powered Chargers.
TEL: +86-0755-27595155 27595165 FAX: +86-0755-2759479...

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