CST4056E Datasheet | ChipSourceTek

Chp S矽our源c特e T科ek技 CST4056E 1A ;Standalone Linear Li-lon Battery Charger CST4056E Features - Programmable Charge Current Up to 1A - Preset 4.2V charge voltage with ±1% accuracy - No MOSFET,Sense Resistor or blocking Diode Required - 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 - Automatic recharge - Battery Reverse Polarity Voltage Protection - Charge Status Output Pin Two Status Indication for Charge status - C/10 Charge Termination - 35µA Supply Current in Shutdown - 2.9V Trickle Charge Threshold - Soft-Start Limits Inrush Current - Monitor output charge current - Output with protection against anti-irrigation - Battery Temperature Sensing - Available Package：ESOP-8 - Ro HS pliant and Lead (Pb) Free CT4056E Application - Cellular Telephones - Charging Docks and Cradles - Bluetooth Application - Wearable Application CST4056E Description CST4056E is a plete 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 CST4056E 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 CST4056E automatically enters a low current state dropping the battery drain current to less than 1μA. The CST4056E can be put into shutdown mode reducing the supply current to 35μA.Other Features include Battery temperature monitor, under-voltage lockout, automatic...