The KF5353series product is a high integration solution for lithium- ion/polymer battery protection. KF5353 contains advanced power MOSFET, high-accuracy voltage detection circuits and delay circuits. KF 5353 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.
KF5353 has all the protection functions required in the battery application including overcharging, overdischarging, overcurrent and load short circuiting protection etc. The accurate overcharging detection voltage ensures safe and full uillization charging. The low standby current drains lttle current from the cell while in storage.
The device is not only targeted for digital cellular phones, but also for any other information appliances requiring long-term battery life.
FEATURES
Protection of Charger Reverse Connection
Protection of Battery Cell Reverse Connection
Integrate Advanced Power MOSFET with Equivalent of 54mQ Ros(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: 0.1μ A typ.
RoHS Compliant and Lead (Pb) Free .
APPLICATIONS
One-Cell Lithium-ion Battery Pack
Lithium-Polymer Battery Pack