LP4065-00

Aug.-2018

www.lowpowersemi.com

Page 1 of 8

Preliminary Datasheet

LP4065

800mA Single Chip Li-Ion and Li-Polymer Charger

General Description

The LP4065 is a complete constant-current/ constant

voltage linear charger for single cell lithium-ion battery.

Its SOT23-6 package and low external component

count make the LP4065 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 LP4065 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 LP4065

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 .

Order Information

LP4065

F: Pb-Free

Package Type

B6: SOT23-6

Function Class

A: Enable

P: Powergood

Features



Input Voltage up to 28V



Input Over Voltage Protection：7V



Short-circuit protection



Programmable Charge Current :300mA to 800mA



< 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



SOT23-6 Package



RoHS Compliant and 100% Lead (Pb)-Free

Applications



Portable Media Players/Game



Power Bank



Bluetooth Applications



PDA/MID

Marking Information

Device

Marking

Package

Shipping

LP4065AB6F

LPS

BJYWX

SOT23-6

3K/REEL

LP4065PB6F

LPS

BKYWX

SOT23-6

3K/REEL

Marking indication:

Y:Production year W:Production week X: Series Number