LP28014

LP28014 – 00

Oct.-2018

www.lowpowersemi.com

Page 1 of 7

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

General Description

The LP28014 is a complete constant-current/ constant voltage

linear charger for single cell lithium-ion battery. Its TDFN-8

package and low external component count make the LP28014

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.

When the input supply is removed, the LP28014 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.

Order Information

LP28014

F: Pb-Free

Package Type

QV: TDFN-8

Charge Voltage

Default: 4.2V

Applications



Portable Media Players/Game



Power Bank



Bluetooth Applications



PDA/MID

Features



input voltage up to 28V



input Over Voltage Protection：7V



Short-circuit protection



Programmable Charge Current：300mA 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



TDFN-8 2mmx2mm Package



RoHS Compliant and 100% Lead (Pb)-Free

Typical Application Circuit

PG

GND

CHRG

LP28014

Battery

VIN

1K

LED1

LED2

BAT

10uF

ISET

RISET

1uF

VIN

1

7

8

3

2

5

IBF

RIBF

EN

4

ON

OFF

6

10nF

Marking Information

Device

Marking

Package

Shipping

LP28014QVF

LPS

P28014

YWX

TDFN-8

4K/REEL

Marking indication:

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