SHOUDING 首鼎 SD5350A 锂电池二合一保护IC 
 
 
 

   GENERAL DEscriptION 
 
 
 

   SD5350A The  
  A  
  product is  
  a high  
  integration solution for  
  lithiumion/ 
  polymer battery protection. 
 
 
 

   contains advanced power  
  MOSFET, high-accuracy voltage  
  detection circuits and delay circuits. 
  is put into an  
  ultra-small  
  SOT23-5 package and only one 
 
 
 

   external component  
  makes  
  it an ideal  
  solution in limited space of battery pack. 
 
 
 

   has all the protection functions  
  required in the battery application including  
  overcharging, overdischarging, overcurrent  
    
  accurate overcharging detection voltage 
 
 
 

   ensures safe and full utilization charging. 
 
 
 

   The  
  low standby current drains little current 
 
 
 

   from the cell while in storage. 
 
 
 

   The  
  device  
  is  
  not  
  only  
  targeted  
  for  
  digital  
  cellular  
  phones, but  
  also  
  for  
  any  
  other 
 
 
 

   Li-Ion  
  and  
  Li-Poly  
  battery-powered  
  information appliances requiring longterm 
 
 
 

   battery life. 
 
 
 
 
 

   FEATURES 
 
 
 

   · 
  Protection of Charger Reverse  
  Connection 
 
 
 

   · 
  Protection of Battery Cell Reverse  
  Connection 
 
 
 

   · 
  Integrate Advanced Power  
  MOSFET  
  with Equivalent  
  of 54mΩ  
  RDS(ON) 
 
 
 

   · 
  Ultra-small  
  SOT23-5  
  Package 
 
 
 

   · 
  only One External Capacitor  
  Required 
 
 
 

   · 
  Over-temperature Protection 
 
 
 

   · 
  Overcharge Current Protection 
 
 
 

   · 
  Two-step  
  Overcurrent 
 
 
 

   Detection: 
 
 
 

   -Overdischarge Current 
 
 
 

   -Load Short Circuiting 
 
 
 

   · 
  Charger Detection  
  Function 
 
 
 

   · 
  0V Battery Charging  
  Function 
 
 
 

   - Delay  
  Times  
  are  
  generated inside 
 
 
 

   · 
  High-accuracy  
  Voltage  
  Detection 
 
 
 

   · 
  Low Current Consumption 
 
 
 

   - 
  Operation Mode: 2.8μ A  
  typ. 
 
 
 

   - 
  Power-down Mode: 1.5μ A  
  typ. 
 
 
 

   · 
  RoHS Compliant  
  and Lead (Pb)  
  Free 
 
 
 

   APPLICATIONS 
 
 
 

   One-Cell Lithium-ion Battery Pack 
 
 
 

   Lithium-Polymer Battery Pack