CST4056E Description:
CST4056E 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 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 recharge and two status pins to indicate charge and charge termination
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
RoHS Compliant and Lead (Pb) Free
CT4056E Application:
Cellular Telephones
Charging Docks and Cradles
Bluetooth Application
Wearable Application
CST4056E Typical Application Circuit:
CST4056E Pin Configuration (ESOP-8):
CST4056E Pin Description:
CST4056E Order Information:
| Model |
Marking |
Description |
Package |
T/R Qty |
|
CST4056E
|
CST4056E
XXXXX
|
CST4056E;1A;Standalone Linear Li-lon Battery Charger; 2 Charge Status
|
ESOP-8
|
4,000 PCS
|
CST4056E Functional Block Diagram:
CST4056E PACKAGE:
