IP2311: Minimum Size Single-Cell Battery Switch Charging

Function Description:
USB 5V input, switchable charging, charges a single-cell battery, battery terminal current approximately 1-1.2A, charging power approximately 5W.
Ultra-mini size; the overall size of the charging circuit is close to that of a single SOP-8 chip. The SOP-8
IP2311 perfectly addresses the contradiction in small-size products: the TP4054's charging current is too low, and the TP4056's heat generation is too high.
 




Input voltage:


4.5~5.7V, 18V Max. 4.5V triggers undervoltage protection, automatically reducing charging power.




Output voltage:


4.2/4.3/4.35/4.4V ±0.05V.




Trickle charging :


3.0V ±0.05V .




Full charge cutoff:


60mA (40-100mA). (When the chip output reaches 4.2/4.3/4.35/4.4V, if the battery terminal has not reached it, it switches from constant current charging to constant voltage charging. The higher the internal resistance of the battery cell and wires, the longer the constant voltage charging time.) Two




LEDs .


A red light illuminates during charging, turning green when fully charged.




NTC


does not support




chip over-temperature


protection; it has built-in over-temperature protection up to 140℃.




 




USB voltage,


USB current,


battery voltage


, battery current


, charging power,


charging efficiency:




4.90V


1.10A


, 3.66V


1.30A ,


5.42W


, 87.60% ;




4.90V


1.10A , 3.85V 1.25A , 5.43W , 88.55 %; 4.90V 1.10A , 4.06V 1.20A, 5.43W , 89.50%. Charging temperature . Schematic diagram, PCB layout, PCB 3D preview, PCB physical image . Download data: https://oshwhub.com/saber.lily?tab=project&page=1. Other design files can be obtained from your supplier.