LP28601中文资料Battery ChargerIC数据手册LPSemi规格书

描述 Description

The LP28601 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. And a synchronous step up function could supply 5V/2A from Li-Ion battery which can be used as the OTG. The LP28601 includes complete charge termination circuitry, automatic recharge and a ±1% 4.2V/4.3V /4.35V float voltage. The LP28601 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 LP28601 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 LP28601 is available in a low profile QFN-28 package.

特性 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
· OTG:
· 5V /2A @ VBAT=3V Synchronous step up
· Efficiency up to 92%
· Available in QFN28(4*4mm) Package
· RoHS Compliant and 100% Lead (Pb)-Free

应用 Application

· 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