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LP28055

发布时间:2018-9-14 10:47:00 访问次数:67 发布企业:深圳市近平电子有限公司

LP28055

Charge Current(mA):


4.5-28Input Voltage(V):


4.2/4.4Battery Voltage (V) :


1Cells:


CC/CVMode:


YesTemperature Monitor:


2State Monitor:


CTC,1.2A Large Current,Low Cost,OTP,OVP,OCPSpecial Features:


ESOP8Package:




1A Single Chip Li-Ion and Li-Polymer Charger




General Description



The LP28055 is a complete constant-current/ constant voltage linear charger for single cell lithium-ion batteries. Its ESOP8 package and low external component count make the LP28055 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 ISET programmed externally with a single resistor. The LP28055 automatically terminates the charge cycle when the charge current drops to 1/10 setting current value after the final float voltage is reached. When the input supply is removed, the LP28055 automatically enters a low current state, dropping the battery drain current to less than < 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.






Applications



Portable Media Players/Game

Power Bank

PDA/MID

Bluetooth Applications





Features



input voltage up to 28V

input Over Voltage Protection:7V

Short-circuit protection

Programmable Charge Current Up to 1000mA

< 1μA Battery Reverse Current

Protection of Reverse Connection of Battery

No MOSFET, Sense Resistor or Blocking Diode Required

Constant-Current/Constant-Voltage Operation with

Thermal Regulation to Maximize Charge Rate Without

Risk of Overheating

Programmable Charge Termination AC Adapter Power

Good Indicator

ESOP8 Package

RoHS Compliant and 100% Lead (Pb)-Free

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