Sp4522b is a mobile power IC with integrated output for 2A charging and boosting

summary SP4522B It is a synchronous switch designed for mobile power supply Boost single chip solution , The synchronous switch charging module is integrated inside 、 Same as Step up discharge management module 、 Power detection and control LED Indicator module 、 Protection mode block . SP4522B Built in charging and discharging power MOS, The charging current is 2.1A, Synchronous boost output current up to 2.4A. SP4522B Patented charging current adaptive technology is adopted to adapt to small current Gametophyte , At the same time, the patented control mode is adopted to eliminate the external power setting resistance , Reduce power consumption while reducing system cost . SP4522B Temperature compensation is integrated inside 、 Over temperature protection 、 Overcharge and over discharge protection guard 、 Output overvoltage protection 、 Output overload protection 、 Output short circuit protection, etc Safety protection function to ensure the safety of chip and lithium-ion battery , Application circuit Brief single , Charge management and discharge management can be realized with few components . characteristic  Support charging and discharging  Output current up to 2.4A  Charging current :2 .1A  Charging efficiency is as high as 96%  The discharge efficiency is as high as 96%  No need for expensive power setting resistors  Charging current adaptive technology  BAT Discharge termination voltage :2.9V  Optional 4.2V/4.35V Charging voltage  Intelligent temperature control and over temperature protection  Integrated output overvoltage protection 、 Short circuit protection 、 Heavy load protection  Integrated overcharge and over discharge protection  Support trickle mode and zero voltage charging  Support flashlight function ,3.7V Can output 50mA  Package form ：ESOP8 application  Portable source