Today we introduce a relatively unpopular chip,
IP3254ACP: A 3-string to 4-string lithium iron phosphate protection chip with balanced,

Overcharge 3.65V, overdischarge 2.5V, compare the specifications of standard lithium iron phosphate batteries.


 IP3254 series built-in high-precision voltage detection circuit and delay
The circuit is used for 3 or 4 series lithium ion/polymer rechargeable
Battery protection IC. By switching the SEL terminal, it can be used to
Protect 3 or 4 batteries in series. IP3254 supports charging overcurrent protection.
Built-in equalization circuit, battery can be realized without any external components
Charge and discharge balance; and can also expand the MOS tube to increase the balance
flow

With overcurrent protection function
Detection voltage: 0.03V ~ 0.34V, step 10mV
Accuracy ±25mV


Built-in battery balancing function
 Support external expansion MOS tube to increase equalizing current
 Balanced opening voltage
3.4V ~ 3.9V, step 25mV
3.9V ~ 4.45V, step 50mV
Accuracy ±30mV



3 or 4 batteries can be switched through the SEL terminal

Package TSSOP16, corresponding to Seiko S-8254, the price is at least 50% cheaper than Seiko’s.


3 Application
 Li-ion rechargeable battery pack
 Polymer rechargeable battery pack

     Lithium iron phosphate battery pack