Lithium battery charging IC ASC8512 two characteristics: 
 1. Charging 2 Li-ion and lithium polymer batteries 
 2. Switching frequency up to 400K 
 3. Charging current 2A 
 4. 9V to 18V input voltage 
 5. The battery state detection 
 6. Charging voltage value of the constant external resistance by fine-tuning 
 7. Five thousandths of the charging voltage control accuracy 
 5. Against reverse current protection circuit prevents the battery from intrusion 
 6.NTC thermal interface to monitor the battery temperature 
 7.LED charge status indicator 
 8. Operating temperature range: -20 ℃ ~ 70 ℃ 
 9.TSSOP-14