Preliminary Datasheet

LP4060A

LP4060A – Ver. 1.0 Datasheet

Nov.-2007

Page 1 of 13

Thermal Regulation in ThinSOT

General Description

The LP4060A is a complete constant-current/constant-

voltage linear charger for single cell lithium-ion batteries.

Its ThinSOT package and low external component count

make the LP4060A ideally suited for portable applications.

Furthermore, the LP4060A is specifically designed to work

within USB power specifications. 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

programmed externally with a single resistor. The

LP4060A automatically terminates the charge cycle when

the charge current drops to 1/10th the programmed value

after the final float voltage is reached. Other features

include charge current monitor, undervoltage lockout,

automatic recharge and a status pin to indicate charge

termination and the presence of an input voltage.

Order Information

LP4060A - □ □ □ □

□

F: Pb-Free

Package Type

B5: SOT23-5

Applications

Portable Media Players/MP3 players

Cellular and Smart mobile phone

PDA/DSC

Bluetooth Applications

Features

Programmable Charge Current Up to

800mA

No MOSFET, Sense Resistor or Blocking Diode

Required

Complete Linear Charger in ThinSOT

Constant-Current/Constant-Voltage Operation

with Thermal Regulation to Maximize

Charge Rate Without Risk of Overheating

Charges Single Cell Li-Ion Batteries Directly from

USB Port

Preset 4.2V Charge Voltage with ± 1% Accuracy

Available in SOT23-5 Package

Charge Current Monitor Output for Gas

Gauging

Automatic Recharge

2.9V Trickle Charge Threshold

C/10 Charge Termination

Typical Application Circuit

+

1uF

+

1uF

LED

10K

BATT

LP4060J5F

2

4

5

3

1

GND

VCC

PROG

BAT

CHRG

Vin

R

Marking Information

Please see website.

LP4060B5F