LP28056-Linear Charger

产品型号 充电电流(mA) 输入电压(V) 电池电压(V) 电池节数 工作模式 温度检测 状态指示 特征 封装 规格书
LP28056 1200 3.9-7 4.2,4.35 1 CC/CV - 2 CTC,1A Large current,OTP,OCP ESOP8

1.2A Single-chip Li-ion Battery Charge

General Description

The LP28056 is a complete constant-current/ constant-voltage linear charger for single cell lithium-ion batteries. Its ESOP-8 package and low external component count make the LP28056 ideally suited for portable applications. No external sense resistor is needed, and no blocking diode is required due to the internal MOSFET architecture. Thermal feedback regulates the charge current to limit the die temperature during high power operation or high ambient temperature. The charge voltage is fixed at 4.2V, and the charge current can be RISET rammed externally with a single resistor. The LP28056 automatically terminates the charge cycle when the charge current drops to 1/10th the RISET rammed value after the final float voltage is reached. When the input supply is removed, the LP28056 automatically enters a low current state, dropping the battery drain current to less than 1μA. The LP28056 can be put into shutdown mode, reducing the supply current to 1μA. Other features include charge current monitor, under voltage lockout, automatic recharge and a status pin to indicate charge termination and the presence of an input voltage.


 Portable Media Players/MP3 players
 Cellular and Smart mobile phone
 Bluetooth Applications



 Programmable Charge Current Up to 1200mA
 No MOSFET, Sense Resistor or Blocking Diode Required
 Constant-Current/Constant-Voltage Operation with Thermal Regulation to Maximize Charge Rate Without Risk of Overheating
 1μA Supply Current in Shutdown
 4.2V Charge Voltage with ± 1% Accuracy
 Short-circuit protection
 Consumption Available in ESOP-8 Package
 RoHS Compliant and 100% Lead (Pb)-Free


Marking Information

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