Switching Charger(FastCharger)

Specification For Download
LP28501-Fast Charger
3500Charge Current(mA):
4.7-16Input Voltage(V):
-Input OVP(V):
1Cells:
SwitchingMode:
YesTemperature Monitor:
2State Monitor:
ACCP,3.5A charge,OTP,OCP,powerpathSpecial Features:
TQFN-28(4*4MM)Package:


3.5A Synchronous Buck Li-ion Charger
With Intelligent Path Management and Adapter Adaptive



General Description

The LP28501 is a 3.5A Li-Ion battery charger intended for 4.4V~14V wall adapters. It utilizes a high efficiency synchronous buck converter topology to reduce power dissipation during charging. The LP28501 includes complete charge termination circuitry, automatic recharge and a ±1% 4.2V/4.3V /4.35V float voltage. The LP28501 could manage the power supply for system intelligently. The adapter would satisfy the system`s demand firstly, then charge battery with extra current output capacity from adapter. If the current capacity of adapter could not meet the system demand, the adapter and battery would supply power for system together. When the adapter`s current capacity is low than the set charge current, the LP28501 would decrease the charge current automatically to keep the output of adapter would not be pull down by the chip. Additional features include shorted cell detection; temperature qualified charging and overvoltage protection. The LP28501 is available in a low profile QFN-28 package.
 


Applications
 

 Quick charge 2.0/3.0 (QC2.0 / QC3.0)
 Portable Media Players
 Cellular and Smart mobile phone
 PDA/DSC
 Handheld Battery-Powered Devices
 Handheld Computers
 Charging Docks and Cradles

 


Features
 

 Power Path Management Intelligently
 Adapter Adaptive
 CHARGE:
 Very Low Power Dissipation
 3.5A Maximum Charge Current
 Efficiency up to 90%
 Input voltage: 4.4V~14V
 Programmable charge complete voltage:
4.2V /4.3V /4.35V
 Operation with Thermal Regulation to
Maximize Charge Rate Without Risk of
Overheating
 Charges Single Cell Li-Ion Batteries Directly
from USB Port
 Available in QFN28(4*4mm) Package
 RoHS Compliant and 100% Lead (Pb)-Free

 

Marking Information
 

Please see specification. 
Please ask our service mailbox for what you want which is marketing@lowpowersemi.com.
We will send a copy to you as fast as we can.
 


 

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